JP7487466B2 - Manufacturing method of container and manufacturing method of printed can - Google Patents

Description

The present invention relates to a method for manufacturing a container having a printed image, and a method for manufacturing a printed can .

Conventionally, non-transparent containers capable of storing items, on which various designs of pattern images, photographic images, text images, etc. are printed, have been widely used.

For example, Patent Document 1 shows a printed can with a design image printed on a plain background, which has a photo of a coffee cup with coffee poured into it along with a text image of the product name.

JP 2015-117030 A

However, the printed cans described in Patent Document 1 lacked transparency and were not highly decorative. For containers that are non-transparent, such as the printed cans in Patent Document 1, there was a need to further improve the decorativeness.

The present invention has been made in consideration of the above circumstances, and an object of the present invention is to solve the above problems. That is, an object of the present invention is to provide a method for manufacturing a container and a method for manufacturing a printed can with improved decorativeness.

The manufacturing method of a container according to the present invention is a manufacturing method of a container having a non-transparent property capable of containing an object, and includes a step of acquiring scanned images of a plurality of points by scanning a transparent container, which is a three-dimensional object having a curved surface , with a scanner while the transparent container is fixed to acquire a scanned image of one point of the transparent container, and then repeating a scan rotation process in which the transparent container is rotated by a predetermined rotation angle , thereby acquiring scanned images of the plurality of points; and a step of generating a pseudo 3D image by cutting out an image portion within a specific range based on the magnitude of distortion from the scanned images of the plurality of points acquired in the step of acquiring the scanned images, and connecting the cut images from which a specific distortion has been removed, and forming the pseudo 3D image on the container, and the image portion within the specific range is a portion of the transparent container that is rotated from the rotation axis to the rotation axis in a cross section perpendicular to the rotation axis of the transparent container. The present invention is characterized in that, assuming a virtual circle having a radius equal to the distance at which the distance to the curved surface of the transparent container is maximum, and assuming a tangent point as a point at which a normal line connecting a scan position where the transparent container is scanned by the scanner and a center point of the virtual circle, the normal line coinciding with a direction in which the transparent container is taken in from the scan position, and the virtual circle intersect, a point on a tangent line passing through the tangent point of the virtual circle and distant from the tangent point is assumed to be a reference point, the length of the tangent line from the tangent point to the reference point is assumed to be a first length, a point at which an orthogonal line perpendicular to the tangent line at the reference point intersects with the virtual circle is assumed to be an intersection point, and the length of the arc of the virtual circle from the tangent point to the intersection point is assumed to be a second length, the distortion rate (%) of the scanned image, defined as a percentage (%) of a value obtained by subtracting the first length from the second length and dividing the value by the second length ((the second length - the first length) / the second length), is within a range in which 10% or less is obtained.
Preferably, the image portion within the specific range is an image portion within a range in which the distortion rate (%) of the scanned image is 5% or less.

Preferably, the container is characterized in that a pseudo 3D image of the transparent container containing contents is formed, and the contents and the transparent container have colored or colorless transparency.

Preferably, the process of obtaining the scanned image is characterized in that the scanned image is obtained by scanning with the scanner while irradiating light onto the transparent container from the side opposite to the side scanned by the scanner.

Preferably , the process of acquiring the scanned image is characterized in that a light source is installed on the side of the transparent container opposite the side scanned by the scanner, and light is irradiated from the light source onto the transparent container.

Preferably, the light source is equipped with a flicker-free function.

Preferably, in the process of obtaining the scanned image, a light source is installed on the side of the transparent container where scanning is performed by the scanner, and a reflective material is installed on the side of the transparent container opposite the side where scanning is performed by the scanner, and light irradiated from the light source to the reflective material is reflected by the reflective material and irradiated onto the transparent container.

Preferably, the scanned image obtained for one location on the transparent container in the process of obtaining the scanned image is an image obtained by performing multiple scans of the transparent container with the scanner at different heights in the height direction of the transparent container while the transparent container is fixed.

Preferably, the outer surface of the transparent container has a printed image, and the process of obtaining the scanned image is characterized in that the scanner captures the outer surface of the transparent container having the printed image, and also captures the inner surface of the transparent container opposite the outer surface having the printed image.

The method for manufacturing a printed can according to the present invention is a method for manufacturing a printed can capable of containing an object, comprising the steps of: scanning a bottle containing a liquid object, which is a three-dimensional object having a curved surface , with the bottle fixed in place , with a scanner to obtain a scanned image of one location of the bottle; and repeating a scan and rotation process in which the bottle is rotated by a predetermined rotation angle to obtain scanned images of multiple locations; and generating a pseudo 3D image by cutting out image portions within a specific range based on the magnitude of distortion from the scanned images of the multiple locations obtained in the step of obtaining scanned images, and connecting the cut images from which a specific distortion has been removed, and forming the pseudo 3D image on a can body. The image portion within the specific range is a pseudo 3D image formed by cutting out an image portion from a cross section perpendicular to the axis of rotation of the bottle such that the distance from the axis of rotation to the curved surface of the bottle is the shortest. the distance at which the bottle is taken in from the scanning position is the largest; a point at which the virtual circle intersects with a normal line connecting a scanning position at which the scanner scans the bottle and a center point of the virtual circle, the normal line coinciding with a direction in which the bottle is taken in from the scanning position, is defined as a tangent point; a point on a tangent line passing through the tangent point of the virtual circle, away from the tangent point, is defined as a reference point; a length of the tangent line from the tangent point to the reference point is defined as a first length; a point at which an orthogonal line perpendicular to the tangent line at the reference point intersects with the virtual circle is defined as an intersection point; and a length of the arc of the virtual circle from the tangent point to the intersection point is defined as a second length. The image portion is characterized in that a distortion rate (%) of the scanned image, defined as a percentage (%) of a value obtained by subtracting the first length from the second length and dividing the value by the second length ((the second length−the first length)/the second length), is 10% or less.

According to the present invention, it is possible to provide a method for manufacturing a container and a method for manufacturing a printed can with improved decorativeness.

FIG. 1 is a functional block diagram for explaining an image generating system. FIG. FIG. 2 is a perspective view of a bottle of sake, which is the object to be 3D scanned. FIG. 2 is a development view of a design image printed on the can body. FIG. 1 is a diagram showing the structure of a 3D scanner device. FIG. 1 is a diagram for explaining a scanning process by a 3D scanner device. FIG. 7 is an enlarged view of range W in FIG. 6 . FIG. 13 is a diagram showing an example of a scanned image acquired in a first scan rotation process. 11 is a flowchart illustrating an image generating process.

The following describes an embodiment of the present invention with reference to the drawings.

Figure 1 is a functional block diagram for explaining the image generation system. Figure 2 is a perspective view of a printed can. Figure 3 is a perspective view of a bottle of sake, which is the object to be 3D scanned. Figure 4 is a development view of a design image printed on the can body. Figure 5 is a diagram showing the structure of a 3D scanner device. Figure 6 is a diagram for explaining the scanning process by the 3D scanner device. Figure 7 is an enlarged view of range W in Figure 6. Figure 8 is a diagram showing an example of a scanned image acquired in the first scan rotation process. Figure 9 is a flowchart for explaining the image generation process.

[Overall configuration of image generation system]
As shown in FIG. 1, an image generation system 1 in this embodiment includes a 3D scanner device 2 and an information processing device 3.

The 3D scanner device 2 is an image capture device that obtains a scanned image of a three-dimensional object by scanning a transparent container, which is the 3D scan object (capture object).

The information processing device 3 may be, for example, a normal personal computer (PC) equipped with a CPU (Central Processing Unit), a ROM (Read only memory), a RAM (Random access memory), an I/F (Interface), a keyboard, etc. Such an information processing device 3 includes an input/output unit 31, a control unit 32, an operation input unit 33, a transmission/reception unit 34, and a storage unit 35.

The input/output unit 31 is an input/output (I/O) port that inputs and outputs data to and from the 3D scanner device 2. The operation input unit 33 is composed of a normal keyboard or the like, and accepts operations by the operator when generating an image (pseudo 3D image) that reproduces a three-dimensional object in two dimensions from the data of the scanned image of the three-dimensional object acquired by the 3D scanner device 2. The transmission/reception unit 34 has an I/F and transmits and receives data such as pseudo 3D images to a network (not shown). The memory unit 35 stores and reads out pseudo 3D images based on the control of the control unit 32.

The control unit 32 is composed of a CPU, ROM, RAM, etc., and generates a pseudo 3D image of a three-dimensional object from the data of the scanned image acquired by the 3D scanner device 2. The control unit 32 then stores the data of the generated pseudo 3D image in the storage unit 35.

When the transmission/reception unit 34 receives a request to acquire data of a pseudo 3D image of a three-dimensional object (a request for purchase, download, etc.) from another information processing device via the network, the control unit 32 reads the data of the pseudo 3D image of the three-dimensional object from the storage unit 35 and transmits the read data of the pseudo 3D image to the network (not shown) via the transmission/reception unit 34. This allows the operator of the other information processing device to acquire (purchase, download, etc.) the data of the pseudo 3D image of the three-dimensional object.

In addition, without being limited to such an example, the control unit 32 of the information processing device 3 may store the generated pseudo 3D image data of the three-dimensional object in a database of a server (neither of which are shown in the figures) via a network. In this case, when another information processing device makes a request to acquire the pseudo 3D image data of the three-dimensional object (request for purchase, download, etc.), the server transmits the pseudo 3D image data of the three-dimensional object read from its own database to the other information processing device via the network.

Based on the operator's operation, the information processing device 3 generates an image for printing (design image) by synthesizing image data of various images (information images, etc.) on top of the data of the generated pseudo 3D image of a three-dimensional object, and stores the generated design image in the memory unit 35.

Details about the image generation process in the image generation system will be described later.

[Printed cans]
As shown in Fig. 2, a printed can 100, which is an example of a container configured to include a captured image captured by an image capture device, has a cylindrical can body 101. An opening 102 is formed in the upper part of the can body 101. A bottom 104 is provided in the lower part of the can body 101. A design image 110 including a pseudo 3D image of a three-dimensional object is printed on the outer peripheral surface 103 of the can body 101.

Such a printed can 100 is later filled with the contents, such as a beverage (liquid), through the opening 102 into the inside of the can body 101, and the opening 102 is closed with a lid (not shown) to create a canned beverage product.

The design image 110 printed on the outer circumferential surface 103 of the can body 101 is generated using a scanned image obtained by scanning a colored or colorless transparent container, which is an example of a container, with a 3D scanner device 2. This transparent container contains a colored or colorless transparent beverage (liquid) inside, and is scanned in this state with the 3D scanner device 2. It is desirable that such a colored or colorless transparent container containing a colored or colorless transparent beverage (liquid as content) is one that is sold, for example, as a beverage product.

In this embodiment, an example will be described in which a bottle of sake, which is a colorless, transparent, cylindrical bottle containing colorless, transparent sake as a liquid content, is used as the 3D scanning subject and scanned by the 3D scanner device 2. The bottle of sake 4 shown in FIG. 3, which is an example of this 3D scanning subject, has a label 42 with a printed image affixed to part of the outer periphery of a colorless, transparent glass bottle 41. The bottle 41 is filled to the brim with colorless, transparent sake 44, and in this state the opening is closed by a lid 43.

Instead of filling the bottle 41 with sake 44 in this way, if there is headspace other than sake 44 in the bottle 41, a rubber stopper or the like may be attached to the bottle 41 to fill the headspace. If there is headspace in the bottle 41, air bubbles caused by the headspace will be captured when scanned by the scanning unit 22. For this reason, this type of headspace is prevented from occurring.

The label 42 has a product name display section 421 with relatively large product name characters, "Dry Sake," which is the product name of the bottled sake 4, and a content display section 422 with the characters "200 ml," which is the content. Note that the label with information images (text images of ingredients, expiration date, etc., barcodes, etc.) of the bottled sake 4 that was originally attached to the outer surface of the bottle 41 has been peeled off in advance to prevent scanning by the 3D scanner device 2.

Note that transparent containers that are colored or colorless and transparent are not limited to glass bottles, but can also include, for example, PET (Poly Ethylene Terephthalate) bottles, plastic bottles, etc.

The colored or colorless transparent contents are not limited to sake, but may be any liquid or solid, or a mixture of liquid and solid, as long as they are colored or colorless transparent. Examples of such contents include beverages, food, and other objects (models, toys, etc.).

Examples of colored or colorless transparent liquids include colored or colorless transparent non-alcoholic beverages (e.g., water, soft drinks, fruit drinks, tea, soup drinks, nutritional drinks, non-alcoholic beverages with the flavor of alcoholic beverages, etc.), colored or colorless transparent alcoholic beverages (e.g., whiskey, beer, chuhai, sour drinks, cocktails, liqueurs, wine, etc.). Examples of colored or colorless transparent solids include foods such as jelly, agar sweets, ice, candy, and objects such as glass balls, plastic balls, and ice models. Examples of mixtures of colored or colorless transparent liquids and solids include mixtures of the above-mentioned beverages and solids such as ice.

Examples of 3D scanning objects that contain colored or colorless transparent contents in colored or colorless transparent containers include the bottled sake 4 in which colorless and transparent sake 44 is contained in the colorless and transparent bottle 41 described above, as well as bottled whiskey in which a colorless and transparent glass bottle is filled with amber and transparent whiskey, and bottled cider in which a colorless and transparent carbonated soft drink is contained in a green and transparent glass bottle.

In either case, it is desirable to cover the transparent container containing the contents with a lid to prevent the contents from leaking out.

The object to be 3D scanned is not limited to a transparent container having colored or colorless transparency and containing colored or colorless transparent contents, but may be only a transparent container having colored or colorless transparency without containing any contents.

The can body 101 is a metal can, and may be any of various types of metal cans, such as seamless cans or welded cans, formed by drawing, drawing and ironing, redrawing, or the like from various metal sheets, such as aluminum sheets, aluminum alloy sheets, surface-treated steel sheets such as tin-free steel, tinplate, chrome-plated steel sheets, aluminum-plated steel sheets, nickel-plated steel sheets, tin-nickel-plated steel sheets, and various alloy-plated steel sheets. In addition, the surface of this metal can may be laminated with a resin film, such as a polyester film, a nylon film, or a polypropylene film.

[Design image]
As shown in Fig. 4, the design image 110 printed on the can body 101 has a pseudo 3D image 111 that is a two-dimensional reproduction of the bottled sake 4 described above. This pseudo 3D image 111 includes a label surface image 111a that corresponds to the surface of the label 42 described above. This label surface image 111a has a product name table image 111a-1 that corresponds to the product name display section 421 displayed on the surface of the label 42, and a content volume table image 111a-2 that corresponds to the content volume display section 422 displayed on the surface of the label 42. The 3D scanner device 2 captures the outer peripheral surface of the bottle 41 to which the label 42 is affixed, thereby acquiring a label surface image 111a that is a captured image of the surface of the label 42.

As shown in FIG. 4, the pseudo 3D image 111 also includes a label back image 111a' corresponding to the back side of the label 42. This label back image 111a' includes a product name back image 111a-1' corresponding to the product name display section 421 printed on the front side of the label 42 seen through from the back side, and a content volume back image 111a-2' corresponding to the content volume display section 422 printed on the front side of the label 42 seen through from the back side. The 3D scanner device 2 captures the inner peripheral surface (inner surface) opposite to the outer peripheral surface (outer surface) to which the label 42 of the bottle 41 is affixed, thereby acquiring the label back image 111a', which is a captured image of the back side of the label 42.

The inner periphery of the bottle 41 opposite the outer periphery to which the label 42 is affixed is captured through the sake 44 inside the bottle 41, via the side of the outer periphery of the bottle 41 opposite the side to which the label 42 is affixed. Therefore, the product name back image 111a-1' and content back image 111a-2' in the label back image 111a' are slightly distorted in shape due to the captured images of the bottle 41 and sake 44.

This design image 110 is created by combining the image data of the pseudo 3D image 111 with the image data of the information image 111b.

The information image 111b is composed of a basic information image 111b-1, which lists basic information such as the ingredients, content volume, expiration date, and manufacturer's address of the contents (sake) filled in the can body 101; a barcode image 111b-2; a nutritional information image 111b-3, which lists the nutritional components and calorific value of the contents; a recycle mark image 111b-4, which is necessary for recycling the empty can; and a warning image 111b-5, which lists other warnings (for example, "Please drink immediately after opening the can").

[Scanning three-dimensional objects]
5 is placed on a white, non-transparent mounting table T to prevent reflection during scanning, and includes a rotation device 21 to which a three-dimensional object having a curved surface is attached and rotated (spins), a scanning unit 22 to scan the three-dimensional object rotated by the rotation device 21, an LED light source 23 to irradiate illumination light during scanning by the scanning unit 22, and a scanner control unit 24 to control the rotation device 21, the scanning unit 22, and the LED light source 23. The 3D scanner device 2 also includes a reflective material 25 placed on the mounting table T together with the rotation device 21.

The rotation device 21 includes gripping units 211a and 211b that can grip and rotate a three-dimensional object with a curved surface (a bottle of sake 4 in the example of FIG. 5) that is the object to be 3D scanned, a rotation drive unit 212 such as a motor, a support arm 213a and a support base 214a that support the gripping unit 211a, and a support arm 213b and a support base 214b that support the rotation drive unit 212.

The gripper 211a is rotatably connected to the support arm 213a. The gripper 211b is rotatably connected to the rotation drive unit 212.

As shown in FIG. 5, the bottled sake 4, which is the object to be 3D scanned, is held by the grippers 211a and 211b by being sandwiched between the grippers 211a and 211b. In this way, the bottled sake 4, which is the object to be 3D scanned, is attached to the rotation device 21 by the grippers 211a and 211b and fixed so as not to rotate (turn on its axis). When the rotation drive unit 212 is rotated based on the control of the scanner control unit 24, the gripper 211b rotates accordingly. Accordingly, the bottled sake 4 held by the gripper 211b and the gripper 211a that grips the bottled sake 4 rotate.

The scanning unit 22 scans the bottled sake 4 by irradiating it with scanning light and receiving the reflected light based on the control of the scanner control unit 24. This scan is performed in a state where light is irradiated onto the bottled sake 4, which is the object of 3D scanning, from the side opposite to the side where scanning is performed by the scanning unit 22.

In the example of Figure 5, the direction in which the scanning unit 22 scans (scanning direction) during scanning coincides with the direction of the rotation axis (Y-axis direction) of the bottled sake 4 that is later rotated by the rotation device 21. However, the scanning direction by the scanning unit 22 is not limited to this, and may be, for example, a direction perpendicular to the direction of the rotation axis of the bottled sake 4 that is later rotated by the rotation device 21 (X-axis direction).

In the example shown in FIG. 5, an LED light source 23 is installed on the side where the bottled sake 4 is scanned by the scanning unit 22. In addition, a reflective material 25 is installed on a white, non-transparent mounting table T on the opposite side to the side where the bottled sake 4 is scanned by the scanning unit 22. As a result, light irradiated from the LED light source 23 to the reflective material 25 is reflected by the reflective material 25 and irradiated onto the bottled sake 4.

This is because when the amount of light for the 3D scan object is insufficient with only the scanning light (scanning light) irradiated from the scanning unit 22, the amount of light is supplemented from behind the 3D scan object. In particular, when the 3D scan object is, for example, a colorless transparent container containing a content (liquid) with a dark color and transparency, the scanning light from the scanning unit 22 has difficulty reaching the content (liquid) in the transparent container. Therefore, in this case, by supplementing the amount of light from behind the 3D scan object, it is possible to irradiate the light even to the content (liquid) in the transparent container.

The reflective material 25 may be any reflective material, such as a reflector, a reflector mirror, a reflective sheet, or a reflective tape.

In the image generation system 1, data on various parameters (such as the maximum distance from the axis of rotation (the center point of the rotation cross section) of the bottled sake 4 to the curved surface over the entire circumference of the bottled sake 4, and the maximum depth of unevenness of the curved surface) that are measurement values related to the bottled sake 4 that is the object of 3D scanning is acquired. The scanner control unit 24 of the 3D scanner device 2 determines the scanning height and number of scans when scanning one location based on the maximum depth of unevenness of the curved surface. The control unit 32 of the information processing device 3 calculates the distortion rate (%) described below based on the data on various parameters that are measurement values related to the bottled sake 4.

Then, based on the control of the scanner control unit 24, the scanning unit 22 scans multiple locations around the entire circumference of the bottled sake 4, acquires image data of the scanned images of the multiple locations, and supplies the image data to the scanner control unit 24. The scanner control unit 24 then outputs the acquired image data of the scanned images to the information processing device 3. As will be described later, the information processing device 3 generates a pseudo 3D image by stitching (combining) cut-out images from the scanned images of the multiple locations input from the 3D scanner device 2, with specific distortions removed based on parameter data related to the 3D scanned object (bottled sake 4).

In the 3D scanner device 2, the scanner control unit 24 controls the rotation drive unit 212 of the rotation device 21 so as not to drive when the scanning unit 22 performs scanning. That is, based on the control of the scanner control unit 24, the scanning unit 22 scans one location of the bottled sake 4 while the bottled sake 4 held by the gripping units 211a and 211b is fixed and not rotated. In the example of FIG. 5, the one location of the bottled sake 4 refers to the outer periphery of the bottled sake 4 (half the outer periphery of the rotational cross section 4a of the bottled sake 4 shown in FIG. 7) that is scanned in one scan of the bottled sake 4.

In the 3D scanner device 2, the scanner control unit 24 acquires image data of a scanned image of one location on the bottled sake 4, and then controls the rotation drive unit 212 to drive so that the bottled sake 4 rotates by a predetermined rotation angle. In the 3D scanner device 2, the scan rotation process consisting of such scanning and rotation is repeated to acquire image data of scanned images of multiple locations (e.g., 36 locations) of the bottled sake 4, which is the object to be 3D scanned.

The scanner control unit 24 determines the height at which to scan one location based on the maximum value of the depth of the curved surface unevenness (also simply called the "depth of the curved surface unevenness"), which is the distance from the highest position of the convex part to the lowest (deepest) position of the concave part in each unevenness of the 3D scan object (bottled sake 4) in the height direction of the 3D scan object (bottled sake 4) obtained from parameter data related to the 3D scan object (bottled sake 4), and controls the scanning unit 22 to be positioned at the determined height. Based on the control of the scanner control unit 24, the scanning unit 22 scans the 3D scan object at the determined height.

For example, in a three-dimensional object having a curved surface that is the subject of 3D scanning, if the unevenness depth of the curved surface is 10 mm or less, scanning may be performed at height D3 in Figure 5; if the unevenness depth of the curved surface is 20 mm or less, scanning may be performed at heights D2 and D3 in Figure 5; and if the unevenness depth of the curved surface is 30 mm or less, scanning may be performed at heights D1 to D3 in Figure 5. Note that the unevenness depth value of the curved surface and the height at which scanning is performed are not limited to these. For example, even if the unevenness depth of the curved surface is 10 mm or less, scanning may be performed at heights D1 to D3.

The scanner control unit 24 also determines the number of scans to be performed on one location in the height direction of the 3D scan object (bottled sake 4) based on the unevenness depth of the curved surface of the 3D scan object obtained from parameter data related to the 3D scan object (bottled sake 4), and controls the scanning unit 22 to perform the determined number of scans. The scanning unit 22 scans the 3D scan object the determined number of scans based on the control of the scanner control unit 24.

For example, in a three-dimensional object having a curved surface that is the subject of 3D scanning, if the unevenness depth of the curved surface is 10 mm or less, the number of scans may be one, if the unevenness depth of the curved surface is 20 mm or less, the number of scans may be two, and if the unevenness depth of the curved surface is 30 mm or less, the number of scans may be three. Note that the unevenness depth of the curved surface and the number of scans are not limited to these values and may be other values. For example, even if the unevenness depth of the curved surface is 10 mm or less, the number of scans may be multiple (e.g., three).

In the example shown in FIG. 5 and FIG. 6, the scanning unit 22 performs multiple scans at different heights on one location of the bottled sake 4, which is the 3D scan target, in the height direction (Z-axis direction) of the bottled sake 4. Specifically, as shown in FIG. 5 and FIG. 6, the scanning unit 22 performs scans at each of heights D1 to D3, which are the distances from the mounting table T. As shown in FIG. 5, the bottled sake 4 has a curved surface (outer peripheral surface) with a concave-convex depth of approximately 0 mm all around, and thus performs a total of three scans at heights D1 to D3. When multiple scans are performed on one location of the 3D scan target, the scanner control unit 24 combines the multiple scan images obtained by the multiple scans into one scan image, and sets the image data as the data of the scan image of one location. By performing multiple scans at different heights in this way, the image quality of the combined scan image obtained by scanning one location is improved.

In this case, the scanning unit 22 performs a first scan on the bottled sake 4 at height D1, then a second scan at height D2, and finally a third scan at height D3. Through such scanning by the scanning unit 22, the scanner control unit 24 acquires image data of a scan image of one location on the bottled sake 4 based on the scan data obtained by performing each of the first to third scans. In the 3D scanner device 2, even when the scanning unit 22 performs multiple scans at different heights in this way, the position of the LED light source 23 is fixed, and the position of the focal point in the scan is also fixed.

If the object to be 3D scanned is something that has an uneven curved surface, unlike the bottled sake 4, the height of the scan position and the number of scans to be performed on that one point are determined based on the maximum depth of the unevenness around the entire circumference of the 3D scan object.

6 shows the F-F section of the bottled sake 4 in FIG. 5, that is, a rotational section 4a perpendicular to the rotation axis C when the bottled sake 4 is rotated by the rotation device 21, where one point of the bottled sake 4 is scanned at heights D1 to D3. Also shown in FIG. 6 is a hypothetical circle R assumed for the rotational section 4a. The virtual circle R is a circle whose radius is r, which is the maximum distance from the rotational axis C (center point C ₀ ) to the curved surface 4a-1 of the bottled sake 4 in the rotational section 4a of the bottled sake 4. Also shown in FIG. 6 are division lines M that extend radially from the center point C ₀ of the virtual circle R and divide the virtual circle R at central angles θ _a (=5°).

7 shows an enlarged view of the range W in FIG. 6, with the addition of symbols, lines, etc. necessary for explanation. As shown in FIG. 7, a normal line N is defined as a normal line connecting the position (scan position 22a) of the scanning unit 22 at height D3 and the center point _C0 of the imaginary circle R, and coincides with the take-in direction (direction indicated by arrow U) of the bottled sake 4 from the position (scan position 22a) of the scanning unit 22. The take-in direction indicated by arrow U in FIG. 7 is parallel to the direction of the Z axis.

In the rotational cross section 4a of the bottled sake 4 shown in Fig. 7, the rotational angle range _A1 (rotation angle _θb (=2θa = 10°)) is defined as the sum of the range that extends by a central angle θa (= 5°) in the rotational direction indicated by the arrow K1 with respect to the normal line N, and the range that extends by a central angle _θa (= 5°) in the rotational direction indicated by the arrow _K2 with respect to _the normal _line N. The rotational angle range adjacent to the rotational angle range _A1 (rotation angle _{θb (} = 10°)) on the side of the direction of the arrow _K2 is defined as the rotational angle range _A2 (rotation angle _θb (= 10°)). In the same manner, the rotational cross section 4a of the bottled sake 4 is divided into 36 ranges of rotational angle _θb (= 10°), such as rotational angle ranges _A1 to _A36 .

In the first scan rotation process, the 3D scanner device 2 performs, for example, three scans on one location of the bottled sake 4 shown in Fig. 6 using the scanning unit 22. After that, the 3D scanner device 2 rotates the bottled sake 4 in the rotation direction shown by the arrow _K1 by the rotation angle _θb = _2θa (= 10°) (rotation angle range _A1 ), which is an angle range that spreads by a central angle _θa (= ₅ °) in the rotation direction shown by the arrow _K1 and the reverse rotation direction K2, with the normal line N as a reference. When the bottled sake 4 is rotated by the rotation angle _θb (= 10°) in the rotation direction of the arrow _K1 , the portion of the rotation angle range _A2 adjacent to the rotation angle range _A1 of the bottled sake 4 is positioned at the position of the portion of the original rotation angle range _A1 . Then, in the second scan rotation process, the scanner control unit 24 scans the bottled sake 4, and then rotates the bottled sake 4 in the direction of arrow _K1 so that the portion of rotation angle range _A3 is located at the position of the portion of rotation angle range _A2 of the bottled sake 4.

The scanner control unit 24 of the 3D scanner device 2 repeats this scanning and rotation process 36 times, rotating by 10° each time, around the entire circumference of the bottled sake 4, which is the 3D scanning target. The scanner control unit 24 acquires image data of the 36 scanned images through the 1st to 36th scanning and rotation processes.

The scanner control unit 24 of the 3D scanner device 2 outputs image data of the 36 scanned images acquired by the 1st to 36th scan rotation processes to the input/output unit 31 of the information processing device 3.

[Generation of pseudo 3D images]
The input/output unit 31 of the information processing device 3 inputs image data of the 36 scanned images of the bottled sake 4 output from the 3D scanner device 2 and supplies the data to the control unit 32. The control unit 32 of the information processing device 3 performs image processing to generate a pseudo 3D image of the bottled sake 4, using the image data of the 36 scanned images supplied from the input/output unit 31 and parameter data related to the bottled sake 4.

The image processing for generating this pseudo 3D image is performed by installing image editing software in the information processing device 3 and using this image editing software based on the operator's operations received by the operation input unit 33.

Specifically, the control unit 32 cuts out an image portion within a specific range based on the magnitude of distortion calculated from the parameter data related to the bottled sake 4 from the image data of each of the 36 scanned images of the bottled sake 4, and generates a cropped image from which the specific distortion has been removed. The control unit 32 then joins together each of the 36 cropped images to generate a pseudo 3D image of the bottled sake 4.

Here, the image portion of the specific range based on the magnitude of the distortion will be described. The control unit 32 calculates the distortion rate (%) of the scanned image based on the parameters related to the bottled sake 4 as follows. That is, as shown in FIG. 6 and FIG. 7, in the rotation cross section 4a perpendicular to the rotation axis C of the bottled sake 4, which is the 3D scan target (a three-dimensional object having a curved surface), a virtual circle R is assumed with a radius r that is the maximum distance from the rotation axis C (i.e., the center point C ₀ ) to the curved surface (outer peripheral surface) 4a-1 of the 3D scan target (bottled sake 4). Then, the point where the virtual circle R intersects with the normal line N, which is a normal line connecting the scan position 22a (position of height D3) where the 3D scan target (bottled sake 4) is scanned by the scanning unit 22 and the center point C ₀ of the virtual circle R and coincides with the import direction indicated by the arrow U of the 3D scan target (bottled sake 4) from the scan position 22a, is set as the contact point G.

A point on a tangent line L passing through the tangent line G of the imaginary circle R and distant from the tangent line G is defined as a reference point La, and the length of the tangent line L from the tangent line G to the reference point La is defined as a first length _E1 . A point where an orthogonal line T perpendicular to the tangent line L at the reference point La intersects with the imaginary circle R is defined as an intersection point Ra. The length of an arc P of the imaginary circle R from the tangent line G to the intersection point Ra is defined as a second length _E2 .

In this case, the image portion in the specific range is the image portion within a range in which the distortion rate (%) of the _scanned image, defined as the percentage (%) of the value obtained by subtracting the first length _E1 from the second length _E2 and dividing the value by the second length E2 ((second length _E2 - first length _E1 )/second length _E2 ), is equal to or less than a predetermined value. This distortion rate (%) is preferably equal to or less than 10%, and more preferably equal to 5%. As shown in FIG. 7, in the scanned image of bottled sake 4 acquired in the first scan rotation process, the distortion rate (%) of the rotation angle range _A1 (rotation angle _θb (=10°)) is equal to or less than 5%.

8 shows a scanned image of the bottled sake 4 acquired in the first scan rotation process. As shown in FIG. 8, the scanned image portion of the bottled sake 4 within the rotation angle range A ₁ (rotation angle θ _b (=10°)) has little distortion and realistically reproduces the actual bottled sake 4. However, in this scanned image, as the capture range of the bottled sake 4, which is the 3D scan target, expands left and right from the rotation angle range A ₁ , that is, as the capture range expands to the rotation angle ranges A ₂ , A ₃ , A ₄ , A ₅ , A ₆ , ... adjacent to the rotation angle range A ₁ , and as the capture range expands to the rotation angle ranges A ₃₆ , A ₃₅ , A ₃₄ , A ₃₃ , A ₃₂ , ... adjacent to the rotation angle range A ₁ , the distortion of the scanned image portion of the bottled sake 4 becomes greater.

Therefore, the control unit 32 of the information processing device 3 cuts out the scanned image portions of the scanned bottled sake 4 that are within the rotation angle range _A1 (rotation angle _θb (=10°)) where distortion is small (distortion rate 5% or less) from the scanned images acquired in the first scan and rotation process. Similarly, the control unit 32 cuts out the scanned image portions of the scanned bottled sake 4 that are within each of the rotation angle ranges _A2 to _A36 (rotation angle _θb (=10°)) from the scanned images acquired in the second to 36th scan and rotation processes.

Then, the control unit 32 joins together the scanned image portions of each of the cut rotation angle ranges _A1 to _A36 to generate a pseudo 3D image 111 of the bottled sake 4 shown in Fig. 4. The pseudo 3D image 111 shown in Fig. 4 is a realistic reproduction of the actual bottled sake 4 with little distortion.

The control unit 32 may further perform image correction processing such as scale adjustment on the generated pseudo 3D image 111 to further reduce distortion. This makes it possible to obtain a pseudo 3D image that more faithfully reproduces the bottled sake that is the subject of the 3D scan.

[Image Composition]
As shown in Fig. 4, the control unit 32 synthesizes image data of an information image 111b of ingredients of the contents (sake) and the like onto image data of a pseudo 3D image 111 that is a two-dimensional reproduction of a bottled sake 4, which is an example of a three-dimensional object having a curved surface. In this way, the control unit 24 generates a design image 110 to be printed on the can body 101, and stores the generated design image 110 in the storage unit 35.

The printed can 100 has a design image 110 including a pseudo 3D image of the bottled sake 4 printed all around the outer surface 103 of the can body 101, making it possible to make the printed can 100 resemble the bottled sake 4. In other words, a beautiful pseudo 3D image with little distortion that reproduces the transparent bottled sake 4 is formed on the outer surface 103 of the can body 101, which is originally opaque, making it possible to realize a printed can 100 that looks just like the real bottled sake 4. As a result, the decorativeness of the printed can 100 can be improved.

This design image 110 includes a captured image that captures the outer peripheral surface of the bottle 41 to which the label 42 is affixed, as well as the inner peripheral surface of the bottle 41 opposite the outer peripheral surface to which the label 42 is affixed. As a result, the text image in the label back image 111a', which is a captured image of the back surface of the label 42, is slightly distorted by the captured images of the bottle 41 and the sake 44. As a result, the printed can 100 on which the design image 110 is printed is a more faithful reproduction of the actual bottled sake 4.

[Image formation on the can body]

The design image 110 thus formed is printed on the outer peripheral surface 103 of the can body 101. This produces a printed can 100 in which the design image 110 is printed on the outer peripheral surface 103 of the can body 101. A known printing method can be used to print the design image 110 on the outer peripheral surface 103 of the can body 101. The printing method is not particularly limited, and examples include inkjet printing, waterless lithographic printing, gravure printing, resin letterpress printing, flexographic printing, direct plate making printing, and screen printing.

The design image 110 may be printed on the outer peripheral surface 103 of the can body 101 using a plurality of printing methods. The design image 110 may be printed on the entire outer peripheral surface 103 of the can body 101 or may be printed only partially on the outer peripheral surface 103.

In order to clearly reproduce a three-dimensional image, it is desirable for the design image 110 to be reproduced using inks of four or more colors (yellow, magenta, cyan, and black), and by using spot colors as necessary, a more detailed print reproduction can be achieved.

Even when printing is performed using normal printing ink, a printed image with a three-dimensional feel can be formed in which surface irregularities and the like are accurately reproduced. However, by printing using foamed ink containing thermally expandable microcapsules in the printing ink, or by thick printing using inkjet printing or tactile printing, a printed image with a highly designed feel and an emphasized three-dimensional feel can be achieved on the outer peripheral surface 103 of the can body 101.

[Outermost layer]
It is preferable that the surface morphology characteristics of the 3D scanned object in the design image 110 are more realistically reproduced as a pseudo 3D printed image on the outer peripheral surface 103 of the can body 101 on which the design image 110 is printed. Therefore, a glossy layer or a diffuse reflection layer may be formed as the outermost surface layer on the layer of the design image 110 (design image layer) printed on the outer peripheral surface 103 of the can body 101.

The gloss layer is also called a varnish layer or a topcoat layer, and serves to protect and polish the printed design image 110. The varnish used to form the varnish layer is not particularly limited, but for example, a transparent thermosetting resin can be used, and a lubricant component such as paraffin or silicone oil can also be added.

The diffuse reflection layer reduces the gloss of the surface of the printed design image 110 as much as possible by forming minute irregularities on the surface. Such a diffuse reflection layer is not particularly limited, but is preferably made of, for example, a matte varnish layer, a matte film, etc.

For the matte varnish layer, it is preferable to use a finishing varnish for the top coat layer that contains a matte agent. For the matte film, it is preferable to use a transparent resin film made of a thermosetting resin or the like that contains a matte agent. Examples of matte agents include inorganic particles such as silica, aluminum hydroxide, and aluminum oxide, and powders and beads of organic materials such as silicone resin and acrylic resin.

[Other layers]
The printing layer of the design image 110 is formed directly on the outer peripheral surface 103 of the can body 101, but the printing layer of the design image 110 may also be formed via a base coat layer such as a solid white print layer or an anchor coat layer, or a base film, etc.

By forming a solid white print layer on the outer peripheral surface 103 of the can body 101, it is possible to reduce the influence of the color of the can body 101 on the design image 110. The solid white print layer is formed, for example, by applying and drying a white ink in which a white pigment such as titanium oxide is dispersed in a solvent together with a thermosetting, ultraviolet-curable, or electron beam-curable resin, and then curing the ink by heat or the like.

In addition, by forming an anchor coat layer on the outer peripheral surface 103 of the can body 101, the adhesion of the printed layer of the design image 110 to the outer peripheral surface 103 of the can body 101 can be improved. The anchor coat layer is formed by applying and drying a coating liquid in which a thermosetting, ultraviolet-curing, electron-beam-curing, or other resin is dispersed or dissolved in a solvent, and then curing the coating liquid by heat or the like.

[Special Shape Processing]
The outer peripheral surface 103 of the can body 101 may be printed with the design image 110 and may be deformed. In this case, deformed to form irregularities so as to partially or entirely surround the pseudo 3D printed image in the design image 110 allows consumers to perceive a three-dimensional effect both visually and tactilely, and the three-dimensional effect of the pseudo 3D printed image can be further enhanced. As the deformed effect, known methods such as mechanical processing such as bending, embossing, and stamping can be used.

[Image generation processing by image generation system]
Next, the image generation process performed by the image generation system will be described with reference to the flowchart of FIG.

(Step S1: Pre-scan process)
In the preliminary scan process of step S1, the image generation system 1 performs a preliminary scan (pre-scan) on the bottled sake 4, which is the 3D scan target, using the 3D scanner device 2 to acquire data on various parameters that are measurement values related to the bottled sake 4 (such as the maximum distance from the rotation axis (center point of the rotation cross section) of the bottled sake 4 to its curved surface, and the maximum unevenness depth of the curved surface). In this preliminary scan, the bottled sake 4 is rotated 360° by the rotation device 21 under the control of the scanner control unit 24, while the scanning unit 22 scans the bottled sake 4, thereby acquiring various parameters related to the bottled sake 4. The scanner control unit 24 outputs the data on the various parameters related to the bottled sake 4 acquired by this preliminary scan to the information processing device 3.

(Step S2: Scan rotation process)
In the scan rotation process of step S2 following step S1, the image generating system 1 acquires image data of a scan image of one location of the bottled sake 4 by the scanner control unit 24 of the 3D scanner device 2, and then repeats the scan rotation process of rotating the bottled sake 4 by a predetermined rotation angle 36 times to acquire image data of 36 locations (36 pieces) of the bottled sake 4, which is the 3D scan target. In this step S2, the scanner control unit 24 determines the scan height and the number of scans in one scan rotation process performed on one location of the 3D scan target based on the parameters (maximum value of the unevenness depth of the curved surface) related to the bottled sake 4 input from the 3D scanner device 2 via the input/output unit 31. Also, in this step S2, if the number of scans performed on one location of the 3D scan target is multiple, the scanner control unit 24 regards the image data obtained by combining the multiple scan images obtained by the multiple scans into one scan image as the data of the scan image of one location.

(Step S3: Cutting process)
In the cropping process of step S3 following step S2, the image generation system 1 causes the control unit 32 of the information processing device 3 to specify rotation angle ranges A1 to A36 (rotation angle θb (=10 _° )) in which the distortion rate (%) calculated based on various parameters related to the bottled sake 4 input from the 3D scanner device 2 via the input/output unit 31 is 5% or less for the scanned images acquired in the _1st to _36th scan rotation processes. The control unit 32 then crops out the scanned image portions obtained by scanning the portions of the bottled sake 4 within each of the specified rotation angle ranges _A1 to _A36 (rotation angle _θb (=10°)) to generate 36 cropped images.

(Step S4: Joining process)
In the stitching process of step S4 following step S3, the image generation system 1 generates a pseudo-3D image 111 of the bottled sake 4 by stitching together each of the 36 cut images generated in step S3 using the control unit 32 of the information processing device 3.

(Step S5: Storage process)
In a storage process of step S5 following step S4, the image generation system 1 causes the control unit 32 of the information processing device 3 to store in the storage unit 35 the data of the pseudo 3D image of the bottled sake 4 generated in step S4.

(Step S6: Transmission process)
In the transmission process of step S6 following step S5, when a request to obtain pseudo-3D image data of the bottled sake 4 (a request for purchase, download, etc.) is made from another information processing device, the image generation system 1 reads the pseudo-3D image data of the bottled sake 4 from the memory unit 35 via the control unit 32, and transmits the read pseudo-3D image data to a network (not shown) via the transmission/reception unit 34.

(Step S7: Synthesis process)
In the compositing process of step S7 following step S6, the image generating system 1 performs a process of compositing image data of the product name image 111a including the product name text image 111a-1 "Dry Sake" and image data of the information image 111b of the ingredients of the contents (sake 44) on the image data of the pseudo 3D image 111 of the bottled sake 4 read from the storage unit 35 by the control unit 32 of the information processing device 3. In this way, the control unit 24 generates the design image 110 to be printed on the can body 101, and stores the generated design image 110 in the storage unit 35.

(Step S8: Image forming process)
In an image forming process of step S8 following step S7, the image system 1 prints the design image 110 generated in step S7 on the outer peripheral surface 103 of the can body 101. In this way, a printed can 100 is manufactured in which the design image 110 is printed on the outer peripheral surface 103 of the can body 101.

[Modification]
The above-described embodiments, including modified examples, can apply the techniques of each other. The above-described embodiments do not limit the content of the present invention, and can be modified to the extent that they do not depart from the scope of the claims.

The curved object to be 3D scanned is not limited to the bottled sake 4 described above, but may be any other colored or colorless transparent object. Examples of the shape of such a three-dimensional object include a cylinder, a polygonal cylinder (pentagonal cylinder, hexagonal cylinder, etc.), and other shapes. Examples of such a three-dimensional object include a container such as a bottle-shaped or cup-shaped beverage bottle, or such a container containing a colored or colorless transparent liquid such as a beverage, or an object made of glass, transparent resin (plastic, etc.), ice, etc.

The image capture device is not limited to the above-mentioned 3D scanner device 2, and may be another image capture device. For example, the image capture device may be an imaging device (camera) that captures an image of an object. In this case, instead of the above-mentioned step S1, an imaging device is placed as the image capture device at a position of height D3 in FIG. 4, for example, and an image is captured of one location of the bottled sake 4, which is the object of image capture (capture subject), to obtain a captured image. In this case, too, the printed can 100 is manufactured by performing the same processes as those in the above-mentioned steps S2 to S8.

Furthermore, when an imaging device (camera) is used as the image capture device, instead of rotating the bottled sake 4, which is the subject of image capture (capture subject) in step S1 described above, the imaging device may be moved around the bottled sake 4 while the bottled sake 4 is fixed, and the outer periphery (entire circumference) of the bottled sake 4 may be imaged 36 times by this imaging device. Even in this case, the printed can 100 is manufactured by carrying out the same processes as steps S2 to S8 described above.

In addition, in the above example, the rotation angle range when rotating the 3D scanned object (bottled sake 4) in one scan rotation process and the rotation angle range of the 3D scanned object captured as the portion of the scanned image to be cut out in the scan image obtained by that scan rotation process are set to the same value of 10°, but these values may be other values.

The rotation angle range when rotating the 3D scanned object (bottled sake 4) in one scan rotation process can be any value as long as it is less than or equal to the rotation angle range of the 3D scanned object captured as the portion of the scanned image to be cut out in the scanned image obtained in that scan rotation process.

For example, suppose that the rotation angle range when rotating the 3D scanned object (bottled sake 4) in one scan rotation process is 8°, and the rotation angle range of the 3D scanned object captured as the scanned image portion to be cut out in the scan image acquired in that scan rotation process is 10°. In this case, in the above-mentioned step S4, the images to be joined together are joined together with an overlap of 2°. In this case, by overlapping the joint parts of the images, a clearer pseudo 3D image can be generated in which the joint parts are not noticeable.

In the above example, various parameters related to the 3D scan object (bottled sake 4) (maximum value of the distance from the rotation axis (center point of the rotation cross section) of the bottled sake 4 to its curved surface, maximum value of the unevenness depth of the curved surface, etc.) are obtained by the preliminary scan in step S1, but the present invention is not limited to this, and the various parameters may be obtained by other methods. For example, various parameters related to the 3D scan object (bottled sake 4) may be obtained by directly measuring the 3D scan object (bottled sake 4) in advance. In this case, the information processing device 3 acquires the various parameters related to the measured 3D scan object (bottled sake 4) by inputting them based on the operation of the operator at the operation input unit 33. The 3D scanner device 2 determines the scan height and the number of scans in one scan rotation process performed on one location of the 3D scan object (bottled sake 4) based on the maximum value of the unevenness depth of the curved surface among the various parameters input by the information processing device 3. In addition, the information processing device 3 calculates the above-mentioned distortion rate (%) based on various parameters related to the 3D scan object (bottled sake 4) input based on operations on the operation input unit 33.

In the above example, the scanning unit 22 scans multiple locations around the entire circumference of the 3D scan object (bottled sake 4), but this is not limited to the above, and multiple locations may be scanned on at least a portion of the 3D scan object. For example, the scanning unit 22 may scan multiple locations on a portion of the outer circumferential surface of the 3D scan object (e.g., within a range of a rotation angle of 340° or 350°, etc.).

In addition, instead of the LED light source 23 and reflector 25 in the above example, a panel-shaped LED light source may be installed on the opposite side of the 3D scanning object (bottled sake 4) from the side where scanning is performed by the scanning unit 22 (i.e., the installation position of the reflector 25 in Figure 4), and light may be irradiated from the panel-shaped LED light source onto the 3D scanning object (bottled sake 4).

The LED light source 23 described above or the panel-shaped LED light source described in this modified example may be a light source equipped with a flicker-free function (flicker-free light source). This flicker-free function suppresses flicker (flickering) of the irradiated light by converting AC to DC, or by changing the AC frequency from 50 to 60 Hz to a higher frequency such as 7000 Hz. When a flicker-free light source is placed under the object to be captured to obtain a captured image, flicker (flickering) of the light irradiated from the light source can be suppressed, and unevenness in the captured image, color unevenness, etc. can be prevented.

A colored, non-transparent or colored, transparent sheet may be placed on the reflector 25 or panel-shaped LED light source on the above-mentioned mounting table T. In this case, the 3D scanning object is a colorless, transparent or colorless, transparent three-dimensional object whose outer circumferential surface is formed with unevenness by the above-mentioned irregular processing. Then, in the captured image captured by the image capture device, the unevenness of the 3D scanning object (colorless, transparent or colorless, transparent three-dimensional object) is emphasized by the color of the colored, non-transparent or colored, transparent sheet behind it, making it easier to recognize the three-dimensional effect of the unevenness. Examples of such three-dimensional objects include PET (Poly Ethylene Terephthalate) bottles and bottles for beverages, in which a part of the outer circumferential surface is irregularly processed to form an uneven pattern.

In addition, the background of the information image is not limited to the solid white color described above. For example, the background of the information image may be colorless and transparent. In this case, if an image of a transparent body or other images is displayed in the captured image portion behind the information image, those images can be shown to consumers as the background of the information image in the design image.

In the above example, a cylindrical can body 101 (cylindrical can) used as a beverage can has been described as an example, but the present invention is not limited to this and may be any type of container. Examples of materials for the container include metal, resin (plastic, etc.), paper, and ceramics. The container may have any shape, including bottle-shaped, cylindrical, polygonal tubular, box-shaped, and bag (pouch)-shaped containers. Examples of such containers include cylindrical or bottle-shaped cans made of metal, non-transparent PET bottles or plastic bottles, plastic or paper boxes, and non-transparent bag (pouch)-shaped containers made of vinyl, aluminum, etc.

In the above example, a design image is printed on the container body (can body) as a container, as an example of forming the captured image captured by the image capture device on the container, but the method of forming the design image on the container is not limited to this. For example, a label with a printed design image may be attached to the outer surface of the container body as a container to form a labeled container. For example, a shrink film with a printed design image may be attached to the outer surface of the container body as a container to form a container with a shrink film. For example, a roll label with a printed design image may be attached to the outer surface of the container body as a container to form a container with a roll label. The shrink film is attached to the container body by being wrapped around the outer surface of the container body and then shrinking by heating. The roll label is attached to the container body by being wrapped around the outer surface of the container body and then gluing the overlapping portions of the label (film) together.

Examples of labeled containers include labeled cans and bottles with labels on which a design image is printed. Examples of containers with shrink film or roll labels include PET bottles with shrink film or roll labels on the outer periphery on which a design image is printed.

1 Image generation system, 2 3D scanner device, 3 Information processing device, 31 Input/output unit, 32 Control unit, 33 Operation input unit, 34 Transmitting/receiving unit, 35 Memory unit, 100 Printed can, 101 Can body, 102 Opening, 103 Outer surface, 104 Bottom, 4 Bottled sake, 41 Bottle, 42 Label, 43 Lid, 44 Sake, 421 Product name display unit, 422 Contents display unit, 110 Design image, 111 Pseudo 3D image, 111a Label surface image, 111a-1 Product name table image, 111a-2 Contents table image, 111b Information image, 111b-1 Basic information image, 111b-2 Barcode image, 111b-3 Nutritional information image, 111b-4 Recycling mark image, 111b-5 Caution image, 111a' Label back image, 111a-1' Product name back image, 111a-2' Contents back image, 21 Rotation device, 22 Scanning unit, 23 LED light source, 24 Scanner control unit, 25 Reflector, 212 Rotation drive unit, 211a, 211b Grip unit, 213a, 213b Support arm, 214a, 214b Support stand

Claims (10)

A method for manufacturing a non-transparent container capable of containing an object, comprising the steps of:
A process of acquiring a scanned image of one location of a transparent container, which is a three-dimensional object having a curved surface , by scanning the transparent container with a scanner while the transparent container is fixed , and then acquiring scanned images of multiple locations by repeating a scan rotation process in which the transparent container is rotated by a predetermined rotation angle;
a step of generating a pseudo 3D image by cutting out image portions within a specific range based on the magnitude of distortion from the multiple scanned images acquired in the step of acquiring the scanned images, and connecting the cut images in which the specific distortion has been removed, and forming the pseudo 3D image in the container;
The image portion within the specific range is
In a cross section perpendicular to the rotation axis of the transparent container, a virtual circle is assumed whose radius is the distance from the rotation axis to the curved surface of the transparent container that is the maximum distance, and the tangent point is the point where the virtual circle intersects with a normal line connecting the scanning position where the scanner scans the transparent container and the center point of the virtual circle, the normal line coinciding with the direction in which the transparent container is taken in from the scanning position.
a point on a tangent line passing through the tangent line of the imaginary circle and distant from the tangent line is set as a reference point, and a length of the tangent line from the tangent line to the reference point is set as a first length;
A point where an orthogonal line perpendicular to the tangent line at the reference point intersects with the imaginary circle is defined as an intersection point, and the length of the arc of the imaginary circle from the tangency point to the intersection point is defined as a second length.
the image portion is within a range in which a distortion rate (%) of the scanned image, defined as a percentage (%) of a value obtained by subtracting the first length from the second length and dividing the value by the second length ((the second length - the first length) / the second length), is 10% or less;
A method for manufacturing a container comprising the steps of: The image portion within the specific range is an image portion within a range in which the distortion rate (%) of the scanned image is 5% or less.
The method for manufacturing a container according to claim 1 . The container has a pseudo 3D image of the transparent container containing the contents formed therein,
The method for manufacturing a container according to claim 1 or 2 , wherein the content and the transparent container have transparency and are colored or colorless. In the step of acquiring the scanned image, the scanned image is acquired by scanning the transparent container with the scanner while irradiating the transparent container with light from the side opposite to the side where the scanning is performed by the scanner.
A method for manufacturing a container according to any one of claims 1 to 3 . The method for manufacturing a container according to claim 4, characterized in that in the step of obtaining the scanned image, a light source is placed on the transparent container on the side opposite to the side scanned by the scanner, and light is irradiated from the light source onto the transparent container. The method for manufacturing a container according to claim 5 , wherein the light source is a light source equipped with a flicker-free function. The method for manufacturing a container as described in claim 4, characterized in that in the process of obtaining the scanned image, a light source is installed on the side of the transparent container where scanning is performed by the scanner, and a reflective material is installed on the side of the transparent container opposite the side where scanning is performed by the scanner, and light irradiated from the light source to the reflective material is reflected by the reflective material and irradiated onto the transparent container. In the step of acquiring the scanned image, the scanned image acquired for one portion of the transparent container is
The method for manufacturing a container described in any one of claims 1 to 7, characterized in that the image is obtained by scanning the transparent container multiple times with the scanner at different heights in the height direction of the transparent container while the transparent container is fixed. an exterior surface of the transparent container having a printed image;
In the step of acquiring the scanned image , the scanner captures an outer surface of the transparent container having the printed image thereon , and also captures an inner surface of the transparent container opposite to the outer surface having the printed image thereon.
A method for manufacturing a container according to any one of claims 1 to 8 . A method for manufacturing a printed can capable of containing an object, comprising the steps of:
a step of scanning a bottle containing a liquid object, which is a three- dimensional object having a curved surface , with a scanner while the bottle is fixed to obtain a scanned image of one location of the bottle, and then repeating a scan rotation process of rotating the bottle by a predetermined rotation angle to obtain scanned images of multiple locations ;
a step of generating a pseudo 3D image by cutting out image portions within a specific range based on the magnitude of distortion from the multiple scanned images acquired in the step of acquiring the scanned images, thereby removing the specific distortion, and connecting the cut images; and forming the pseudo 3D image on the can body.
The image portion within the specific range is
In a cross section perpendicular to the rotation axis of the bottle, a virtual circle is assumed to have a radius equal to the distance from the rotation axis to the curved surface of the bottle at a maximum, and a tangent point is defined as a point where the virtual circle intersects with a normal line connecting a scanning position where the scanner scans the bottle and the center point of the virtual circle, the normal line coinciding with the input direction of the bottle from the scanning position.
a point on a tangent line passing through the tangent line of the imaginary circle and distant from the tangent line is set as a reference point, and a length of the tangent line from the tangent line to the reference point is set as a first length;
A point where an orthogonal line perpendicular to the tangent line at the reference point intersects with the imaginary circle is defined as an intersection point, and the length of the arc of the imaginary circle from the tangency point to the intersection point is defined as a second length.
the image portion is within a range in which a distortion rate (%) of the scanned image, defined as a percentage (%) of a value obtained by subtracting the first length from the second length and dividing the value by the second length ((the second length - the first length) / the second length), is 10% or less;
A method for producing a printed can comprising the steps of: