JP7623148B2 - IMAGE JUDGMENT DEVICE, IMAGE JUDGMENT METHOD, AND IMAGE JUDGMENT PRO - Google Patents

Description

The present invention relates to an image judgment device, an image judgment method, and an image judgment program.

Currently, development is underway on a device that captures digital images and calculates three-dimensional positions through image processing. Technology is being considered for applying such devices to rebar arrangement inspections to inspect rebar diameter, spacing, and the like. For example, Patent Document 1 discloses a device that determines the standard of a rebar based on the maximum diameter of the rebar obtained from a captured image and rebar standard information that indicates the maximum diameter range for each standard.

JP 2013-40549 A

However, it is often difficult to calculate the maximum diameter of a rebar from a photographed image. This is because deformed rebars, which have irregularities such as knots and ribs on their surface, have a small area of the rebar's outer shape that shows the maximum diameter. Furthermore, at the actual site where rebar is measured, there are various error factors such as the effects of lighting, dirt, rust, background rebar, and the position of ribs, making it difficult to calculate the diameter from the area that shows the maximum diameter. Also, in order to calculate the minimum diameter of a rebar, it is necessary to calculate from the area that shows the minimum diameter, and it is not possible to calculate from the entire edge of the rebar.

On the other hand, when calculating the rebar diameter from the entire rebar edge, many edges are used, such as the area showing the maximum diameter, the area showing the minimum diameter, and the middle of the nodes, so the rebar diameter can be calculated stably. In this case, the rebar diameter is included in the range between the minimum diameter and the maximum diameter.

However, if the rebar diameter calculated from the entire rebar edge is close to the maximum or minimum diameter of the standard, it becomes necessary to determine which of the adjacent standards it belongs to. First, as shown in the left diagram of Figure 8, the range of rebar diameters for each standard (e.g., Da) is the combined range of rebar diameters for each manufacturer. In that case, as shown in the right diagram of Figure 8, there may be an overlapping portion H of the rebar diameter ranges between adjacent rebar standards Da and Db.

This is because the range of rebar diameters for each standard differs not only due to individual differences, but also depending on the rebar manufacturer. That is, for example, if the range from the minimum diameter to the maximum diameter for each rebar standard were to include the range from the minimum diameter to the maximum diameter for each rebar manufacturer, the maximum diameter of manufacturer B would be larger than the maximum diameter of manufacturer A that corresponds to rebar standard Da, and the minimum diameter of manufacturer A would be smaller than the minimum diameter of manufacturer B that corresponds to rebar standard Db, so the overlapping portion H of the range from the minimum diameter to the maximum diameter between adjacent rebar standards Da and Db would be wider.

When the calculated rebar diameter falls within the range of portion H, it is difficult to determine whether the rebar diameter is Da or Db, so the wider the overlapping portion H, the lower the accuracy of the rebar standard determination may become.

One aspect of the present invention aims to improve the accuracy of rebar standard determination.

To solve the above problem, an image determination device according to one aspect of the present invention includes an image processing unit that calculates the diameter of a reinforcing bar from an image of the reinforcing bar, an acquisition unit that acquires manufacturer information indicating the manufacturer of the reinforcing bar, and a standard determination unit that determines the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired manufacturer information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each reinforcing bar manufacturer.

In order to solve the above problem, an image determination device according to one aspect of the present invention includes an image processing unit that calculates the diameter of the reinforcing bar from an image of the reinforcing bar, an acquisition unit that acquires site information indicating the site where the reinforcing bar is used, and a standard determination unit that determines the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired site information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each site where the reinforcing bar is used.

In order to solve the above problem, an image determination method according to one aspect of the present invention includes an image processing step of calculating the diameter of the reinforcing bar from an image of the reinforcing bar, an acquisition step of acquiring manufacturer information indicating the manufacturer of the reinforcing bar, and a standard determination step of determining the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired manufacturer information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each reinforcing bar manufacturer.

In order to solve the above problem, an image determination method according to one aspect of the present invention includes an image processing step of calculating the diameter of the reinforcing bar from an image of the reinforcing bar, an acquisition step of acquiring site information indicating the site where the reinforcing bar is used, and a standard determination step of determining the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired site information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each site where the reinforcing bar is used.

The present invention can improve the accuracy of rebar standard determination.

FIG. 1 is a schematic diagram showing an example of a usage mode of an image assessment device according to a first embodiment of the present invention. 1 is a diagram showing a configuration of an image assessment device according to a first embodiment of the present invention; FIG. 2 is a diagram showing the configuration of reinforcing bar standard information according to the first embodiment of the present invention. 4 is a flowchart showing a process of the image assessment device according to the first embodiment of the present invention. FIG. 11 is a diagram showing a configuration of an image assessment device according to a second embodiment of the present invention. FIG. 11 is a diagram showing the configuration of reinforcing bar standard information according to the second embodiment of the present invention. 10 is a flowchart showing a process of an image assessment device according to a second embodiment of the present invention. FIG. 1 is a diagram showing the range of reinforcing bar standards according to the prior art.

[Embodiment 1]
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

(Example of use of image assessment device 1)
FIG. 1 is a schematic diagram showing an example of a usage mode of the image assessment device 1 according to the present embodiment. The image assessment device 1 takes an image of a deformed reinforcing bar as a target, calculates the diameter of the deformed reinforcing bar (hereinafter referred to as the reinforcing bar diameter) from the image, and determines the standard (also referred to as the "name") from the reinforcing bar diameter. Note that a deformed reinforcing bar is a reinforcing bar having nodes, ribs, etc., which are protrusions on the surface of the reinforcing bar. In one embodiment, the nodes are provided along a direction perpendicular or obliquely intersecting the axial direction of the reinforcing bar. The ribs are provided continuously along the axial direction of the reinforcing bar.

As shown in FIG. 1, the image assessment device 1 photographs the deformed reinforcing bar BA to obtain a photographed image 102, calculates the reinforcing bar diameter of the deformed reinforcing bar BA from the photographed image 102, and determines the standard from the reinforcing bar diameter. The image assessment device 1 then displays the photographed image 102, the calculation result 103 of the reinforcing bar diameter of the deformed reinforcing bar BA, and the determination result 104 of the reinforcing bar standard on the display unit 14.

In the example shown in FIG. 1, the image assessment device 1 operates as follows. First, the image assessment device 1 captures an image of the deformed reinforcing bar BA using the imaging units 11 and 12 provided therein. Next, the image assessment device 1 uses the captured images acquired by the imaging units 11 and 12 to calculate the reinforcing bar diameter of the deformed reinforcing bar BA and determine the reinforcing bar standard. Finally, the image assessment device 1 transmits the captured images 102 acquired by the imaging units 11 and 12, the calculation results 103, and the assessment results 104 to the display unit 14.

In this embodiment, the image assessment device 1 captures the image of the deformed reinforcing bar BA, calculates the reinforcing bar diameter of the deformed reinforcing bar BA, and assesses the reinforcing bar standard, and the display unit 14 displays the captured image 102, the calculation results 103, and the assessment results 104. However, this is not a limited form of the present invention, and all of these processes may be performed on the same terminal, or some of these processes may be performed on a server.

In the example shown in Figure 1, the number of deformed bars for which the rebar diameter is calculated is one, but the number of deformed bars for which the rebar diameter is calculated does not have to be one, and the rebar diameters of two or more deformed bars may be calculated simultaneously and the calculation results displayed.

(Configuration of image assessment device 1)
2 is a diagram showing the configuration of the image assessment device 1 according to this embodiment. The image assessment device 1 includes imaging units 11 and 12, a control unit 13, a display unit 14, an input unit 15, and a storage unit 16.

The imaging units 11 and 12 capture images according to the shooting conditions, such as the exposure and focus position, that have been set. The imaging units 11 and 12 are composed of solid-state imaging elements, such as a CCD (Charge Coupled Device) sensor and a CMOS (Complementary Metal Oxide Semiconductor) sensor, lenses, etc.

The control unit 13 calculates the rebar diameter (joint length) by image processing and determines the standard from the rebar diameter. The control unit 13 may be realized by software processing using a CPU (Central Processing Unit), GPU (Graphics Processing Unit), etc., or may be realized by hardware processing using an ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), etc.

The display unit 14 displays images acquired by the imaging units 11 and 12, calculation results, judgment results, etc. The display unit 14 is composed of, for example, a liquid crystal display, an organic EL (Electro Luminescence) display, etc. The input unit 15 inputs data into the image judgment device 1 in response to user operations. The input unit 15 is composed of, for example, a mouse, a keyboard, the touch panel of the display unit 14, etc. The memory unit 16 stores images, calculation results, judgment results, etc. The memory unit 16 is composed of, for example, an SSD (Solid State Drive), HDD (Hard Disk Drive), etc.

(Configuration of control unit 13)
As shown in Fig. 2, the control unit 13 includes an image processing unit 131, an acquisition unit 132, and a standard determination unit 133. The image processing unit 131 calculates the diameter of a reinforcing bar from an image of the reinforcing bar. The acquisition unit 132 acquires manufacturer information indicating the manufacturer of the reinforcing bar. The standard determination unit 133 refers to reinforcing bar standard information 20 in which standard data indicating the standard of the reinforcing bar and reinforcing bar range data indicating the range of reinforcing bar diameters for each reinforcing bar manufacturer are associated with each other, and determines the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired manufacturer information.

(Processing of image processing unit 131)
The image processing unit 131 calculates the parallax from the two images captured by the imaging units 11 and 12, and calculates three-dimensional information of the object in the image. The parallax is the amount of displacement of the object between the two images, and can be calculated by block matching or the like. In block matching, a reference window is set at a pixel of interest in a reference image, and reference windows are sequentially set in a reference image, and the similarity or difference between pixels between the reference window and the reference window is evaluated. SAD (Sum of Absolute Difference), SSD (Sum of Squared Difference), or the like is used to evaluate the pixels.

The relationship between the distance Z to the photographed subject and the parallax D is D = f x B/Z, where f is the focal length of the image capturing units 11 and 12, and B is the distance between the two image capturing units 11 and 12. The three-dimensional coordinates (X, Y, Z) of the subject at the distance Z at the coordinates (x, y) on the image are calculated by X = x x Z/f and Y = y x Z/f.

Here, in the image assessment device 1 according to this embodiment, a method is described in which three-dimensional information is calculated from images captured by the two imaging units 11 and 12, but it may also be calculated from images captured by three or more imaging units, or may be acquired using TOF (Time Of Flight).

The image processing unit 131 calculates the rebar diameter based on the captured image and the calculated three-dimensional information. There are various methods for calculating the rebar diameter, and these methods can be applied to the image assessment device 1 according to this embodiment.

The image processing unit 131, for example, detects edges from image information, performs a Hough transform on the detected edges to extract straight line information, and identifies the position of the rebar by taking into account the inclination, combination, etc. Then, the image processing unit 131 calculates the three-dimensional coordinates of the edges around the identified position of the rebar from the parallax, fits a three-dimensional straight line parallel to the identified axial direction of the rebar to the edges around the rebar, and calculates the distance between the two fitted three-dimensional straight lines.

(Processing of Standard Determination Unit 133)
The standard determination unit 133 determines the rebar standard from the calculated rebar diameter by referring to preset rebar standard information 20. The rebar standard information 20 may be stored in the memory unit 16, may be incorporated into a program executed by the control unit 13, or may be read from a memory device different from the memory unit 16, a server connected via a network, or the like.

Figure 3 is a diagram showing the configuration of reinforcing bar standard information 20 according to this embodiment. As shown in Figure 3, reinforcing bar standard information 20 includes a diameter range (reinforcing bar range data) based on the minimum and maximum diameters (minimum and maximum reinforcing bar diameters) of reinforcing bars for each reinforcing bar standard (standard data). Here, the reinforcing bar diameter range for each reinforcing bar standard included in reinforcing bar standard information 20 is specified for each manufacturer information (Company A, Company B, etc.) indicating the reinforcing bar manufacturer. For example, as shown in Figure 3, the relationship between reinforcing bar manufacturers and reinforcing bar standards is specified.

On the other hand, the rebars used at a single site may be of multiple standards, but are often made by the same rebar manufacturer. Therefore, the manufacturer of the rebars used at the site is set in advance in the image assessment device 1 according to this embodiment. In detail, the acquisition unit 132 acquires manufacturer information indicating the manufacturer of the rebars from the input unit 15, and stores it in the memory unit 16.

Then, the standard determination unit 133 reads the range of rebar diameters that matches the pre-set manufacturer information from the rebar standard information 20 and compares it with the calculated rebar diameter to determine the rebar standard. This makes it possible to improve the accuracy of rebar standard determination even if the rebar diameter range varies depending on the rebar manufacturer.

For example, in FIG. 3, if the set rebar manufacturer is Company A, the calculated rebar diameter is DA, and A19_min < DA < A19_max, the control unit 13 determines the rebar standard to be D19 and outputs it. In detail, the control unit 13 stores the determination result of the rebar standard in the memory unit 16 as stored text data or as image data superimposed on the photographed image of the rebar, or displays it on the display unit 14.

Here, in FIG. 3, an example is shown in which the rebar standards and rebar diameter ranges of each manufacturer are all specified, but if there is a rebar standard that does not exist, it is not necessary to specify it. The standard determination unit 133 may use the value of a similar manufacturer or the average value of all manufacturers as necessary. In addition, the rebar diameter range is shown as a minimum diameter and a maximum diameter, but it may be expressed as a center value and a width, for example, 50 mm ± 2 mm, 50 mm ± 4%, etc.

Furthermore, in the rebar standard information 20 for each manufacturer, the minimum diameter and maximum diameter of adjacent rebar standards do not need to be the same value, and the intermediate value between the minimum diameter and maximum diameter may be used as the threshold value when determining the rebar standard. For example, in the rebar standard information 20 for Company A shown in Figure 3, A16_max and A19_min are not the same value, and A16_max < A19_min is specified. Then, the standard determination unit 133 compares the calculated rebar diameter with (A16_max + A19_min) / 2, and if it is smaller, it is determined to be D16, and if it is larger, it is determined to be D19. In addition, the rebar standard and the range of rebar diameter may be specified for each shape of rebar, such as bamboo joints and screw joints.

(Processing of image assessment device 1)
FIG. 4 is a flowchart showing the process of the image assessment device 1 according to the present embodiment.

(Step S401)
In the image assessment device 1, first, the imaging units 11 and 12 photograph the reinforcing bars, and the data of the photographed images is stored in memory.

(Step S402: Image processing step)
Next, the image processing unit 131 calculates the rebar diameter from the captured image.

(Step S403: Acquisition step)
Next, the standard determination unit 133 reads out manufacturer information indicating a preset reinforcing bar manufacturer, for example, from the memory unit 16.

(Step S404)
Then, the standard determination unit 133 reads out the reinforcing bar diameter range of the reinforcing bar standard from the reinforcing bar standard information 20 based on the manufacturer information read out in step S403.

(Step S405: Standard determination step)
Next, the standard determination unit 133 determines the reinforcing bar standard by comparing the reinforcing bar diameter calculated in step S402 with the reinforcing bar diameter range read out in step S404.

(Step S406)
The control unit 13 causes the display unit 14 to display the reinforcing bar diameter calculated in step S402 and the reinforcing bar standard determined in step S405.

In addition, when standard data and rebar range data are added to the rebar standard information 20, the standard determination unit 133 may refer to the added standard data and rebar range data with priority.

In addition, standard data and rebar range data may be added to the rebar standard information 20 using the calculated rebar diameter.

As described above, the image assessment device 1 according to this embodiment specifies the range of rebar diameters for each rebar standard for each manufacturer information indicating the rebar manufacturer in the rebar standard information 20 when determining the rebar standard, and determines the rebar standard by comparing the rebar diameter range of the rebar manufacturer set by the user with the calculated rebar diameter. This eliminates the influence of differences in rebar diameters between rebar manufacturers, and improves the accuracy of rebar standard determination.

[Embodiment 2]
A second embodiment of the present invention will be described below. For ease of explanation, the same reference numerals will be used to designate components having the same functions as those described in the first embodiment, and the description thereof will not be repeated.

The image assessment device 1a according to this embodiment specifies the range of reinforcing bar diameters specified in the reinforcing bar standard information 20a based on the reinforcing bars used at the site.

(Configuration of image assessment device 1a)
5 is a diagram showing the configuration of the image assessment device 1 according to this embodiment. The image assessment device 1a includes imaging units 11 and 12, a control unit 13a, a display unit 14, an input unit 15, and a storage unit 16.

(Configuration of control unit 13a)
As shown in Fig. 5, the control unit 13a according to the present embodiment includes an image processing unit 131a, an acquisition unit 132a, and a standard determination unit 133a. The image processing unit 131a calculates the diameter of the reinforcing bar from an image of the reinforcing bar. The acquisition unit 132a acquires site information indicating the site where the reinforcing bar is used. The standard determination unit 133a refers to reinforcing bar standard information 20a, which associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard, for each site where the reinforcing bar is used, and determines the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired site information.

(Processing of the standard determination unit 133a)
The standard determination unit 133a determines the rebar standard from the calculated rebar diameter by referring to the preset rebar standard information 20a. The rebar standard information 20a may be stored in the memory unit 16, may be incorporated in a program executed by the control unit 13a, or may be read from a storage device other than the memory unit 16, a server connected via a network, or the like.

Figure 6 is a diagram showing the configuration of reinforcing bar standard information 20a according to this embodiment. As shown in Figure 6, reinforcing bar standard information 20a includes a diameter range (reinforcing bar range data) based on the minimum and maximum diameters (minimum and maximum reinforcing bar diameters) of reinforcing bars for each reinforcing bar standard (standard data). Here, the reinforcing bar diameter range for each reinforcing bar standard included in reinforcing bar standard information 20a is specified for each site information (site E, site F, etc.) that indicates the site where the reinforcing bar is used. For example, as shown in Figure 6, the relationship between the site and the reinforcing bar standard is specified.

The manufacturer and specifications of the reinforcing bars used at the site can be determined from order information from the reinforcing bar manufacturer, design information, etc. Therefore, reinforcing bar specification information 20a can be specified for each site where reinforcing bars are used. Reinforcing bar specification information 20a may be specified for each construction site in a different location, or may be specified for each different building, tunnel, etc. at the same construction site.

As a result, if rebar standards are to be determined at the same site, the accuracy of rebar standard determination can be improved by simply setting the rebar standard information 20a corresponding to the site information indicating the site once, without having to add rebar standards and rebar diameter ranges each time the rebar standards are determined.

The rebar standard and rebar diameter range for each site may be created by the department that manages the construction, such as the head office or branch office, or by the person in charge at the site. By sharing the created rebar standard information 20a on a server, etc., it is possible to determine the rebar standard based on the rebar standard and rebar diameter range for each site on multiple terminals simply by setting the site information.

This allows the rebar standard and range of rebar diameters to be specified in accordance with the rebar used on-site, eliminating the effects of differences in rebar diameters between rebar manufacturers and improving the accuracy of rebar standard determination.

When adding rebar standards and rebar diameter ranges to the site-specific rebar standard information 20a, only the information that corresponds to the rebar standard used at the site is required. For information that has not been added, values from the same rebar manufacturer or the average value of the minimum and maximum diameters are used.

In addition, if the determination is whether the designed rebar standard is being used, it is sufficient to determine whether rebars other than those of the standard included in the design information are being used. If the designed rebar standard is not being used, a notification may be sent to inform the user that the rebar diameter determination result is outside the regulations.

Furthermore, by adding the rebar standard and rebar diameter range for each site using the calculation results of the captured image, the user is less required to input the rebar standard information 20a, and work time can be shortened. For example, the image assessment device 1a can photograph the rebar used at the site and assign a rebar standard to the calculation result of the rebar diameter, which can be added to the rebar standard information 20a. The rebar diameter range is added to a range that is preset for each rebar standard. For example, if the calculation result of the rebar diameter is 50 mm and the rebar standard is assigned as D51, the rebar diameter range corresponding to D51 is set to, for example, 50 mm ± 2 mm, 50 mm ± 4%, etc. In this case, the user may set the rebar diameter range individually.

(Processing of image assessment device 1a)
FIG. 7 is a flowchart showing the process of the image assessment device 1a according to this embodiment.

(Step S701)
In the image assessment device 1a, first, the imaging units 11 and 12 photograph the reinforcing bars, and the data of the photographed images is stored in memory.

(Step S702: Image processing step)
Next, the image processing unit 131a calculates the rebar diameter from the captured image.

(Step S703: Acquisition step)
Next, the standard determination unit 133a reads out, for example, from the memory unit 16, site information that indicates the site where the reinforcing bar will be used, which has been set in advance.

(Step S704)
Then, the standard determination unit 133a reads out the reinforcing bar diameter range of the reinforcing bar standard from the reinforcing bar standard information 20a based on the site information read out in step S703.

(Step S705: Standard determination step)
Next, the standard determination unit 133 determines the reinforcing bar standard by comparing the reinforcing bar diameter calculated in step S702 with the reinforcing bar diameter range read out in step S704.

(Step S706)
The control unit 13 causes the display unit 14 to display the reinforcing bar diameter calculated in step S702 and the reinforcing bar standard determined in step S705.

In addition, when standard data and rebar range data are added to the rebar standard information 20a, the standard determination unit 133a may refer to the added standard data and rebar range data with priority.

In addition, standard data and rebar range data may be added to the rebar standard information 20a using the calculated rebar diameter.

As described above, the image assessment device 1a according to this embodiment uses rebar standards and rebar diameter ranges specified for each site to assess rebar standards, thereby improving the accuracy of rebar standard assessment.

〔summary〕
The image assessment device according to aspect 1 of the present invention includes an image processing unit that calculates the diameter of a reinforcing bar from an image of the reinforcing bar, an acquisition unit that acquires manufacturer information indicating the manufacturer of the reinforcing bar, and a standard assessment unit that determines the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired manufacturer information by referring to reinforcing bar standard information that associates, for each reinforcing bar manufacturer, standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for that standard.

The image determination device according to aspect 2 of the present invention includes an image processing unit that calculates the diameter of the reinforcing bar from an image of the reinforcing bar, an acquisition unit that acquires site information indicating the site where the reinforcing bar is used, and a standard determination unit that determines the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired site information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each site where the reinforcing bar is used.

In the image assessment device of aspect 3 of the present invention, in the above-mentioned aspects 1 or 2, when the standard data and the reinforcing bar range data are added to the reinforcing bar standard information, the standard assessment unit may preferentially refer to the added standard data and reinforcing bar range data.
3. The image assessment device according to claim 1 or 2.

The image assessment device according to aspect 4 of the present invention may add the standard data and the reinforcing bar range data to the reinforcing bar standard information using the calculated reinforcing bar diameter in the above-mentioned aspect 1 or 2.

The image determination method according to aspect 5 of the present invention includes an image processing step of calculating the diameter of the reinforcing bar from an image of the reinforcing bar, an acquisition step of acquiring manufacturer information indicating the manufacturer of the reinforcing bar, and a standard determination step of determining the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired manufacturer information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each reinforcing bar manufacturer.

The image determination method according to aspect 6 of the present invention includes an image processing step of calculating the diameter of the reinforcing bar from an image of the reinforcing bar, an acquisition step of acquiring site information indicating the site where the reinforcing bar is used, and a standard determination step of determining the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired site information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each site where the reinforcing bar is used.

The image assessment device according to each aspect of the present invention may be realized by a computer. In this case, the control program for the image assessment device, which causes the computer to operate as each unit (software element) of the image assessment device, thereby realizing the image assessment device on the computer, and the computer-readable recording medium on which the control program is recorded, also fall within the scope of the present invention.

The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. The technical scope of the present invention also includes embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Furthermore, new technical features can be formed by combining the technical means disclosed in the respective embodiments.

Reference Signs List 1, 1a Image assessment device 11, 12 Imaging unit 13, 13a Control unit 14 Display unit 15 Input unit 16 Storage unit 20, 20a Reinforcing bar standard information 131, 131a Image processing unit 132, 132a Acquisition unit 133, 133a Standard assessment unit

Claims (7)

an image processing unit that calculates the diameter of the reinforcing bar from an image of the reinforcing bar;
An acquisition unit that acquires manufacturer information indicating a manufacturer of the reinforcing bar;
a standard determination unit that determines the standard of the reinforcing bar based on the calculated diameter of the reinforcing bar and the acquired manufacturer information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters of the standard for each reinforcing bar manufacturer;
An image assessment device comprising: an image processing unit that calculates the diameter of the reinforcing bar from an image of the reinforcing bar;
An acquisition unit that acquires site information indicating a site where the reinforcing bar is used;
a standard determination unit that determines the standard of the reinforcing bar based on the calculated diameter of the reinforcing bar and the acquired site information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters for the standard for each site where the reinforcing bar is used;
An image assessment device comprising: When the standard data and the reinforcing bar range data are added to the reinforcing bar standard information,
3. The image assessment device according to claim 1, wherein the standard determination unit preferentially refers to the added standard data and the added reinforcing bar range data. The image assessment device according to claim 1 or 2, characterized in that the standard data and the reinforcing bar range data are added to the reinforcing bar standard information using the calculated reinforcing bar diameter. An image processing step of calculating a diameter of the reinforcing bar from an image of the reinforcing bar;
An acquisition step of acquiring manufacturer information indicating a manufacturer of the reinforcing bar;
a standard determination step of determining the standard of the reinforcing bar from the calculated diameter of the reinforcing bar and the acquired manufacturer information by referring to reinforcing bar standard information in which standard data indicating the standard of the reinforcing bar and reinforcing bar range data indicating the range of reinforcing bar diameters of the standard are associated with each other for each reinforcing bar manufacturer;
An image assessment method using an image assessment device, comprising: An image processing step of calculating a diameter of the reinforcing bar from an image of the reinforcing bar;
An acquisition step of acquiring site information indicating a site where the reinforcing bar is used;
a standard determination step of determining the standard of the reinforcing bar based on the calculated diameter of the reinforcing bar and the acquired site information by referring to reinforcing bar standard information that associates standard data indicating the standard of the reinforcing bar with reinforcing bar range data indicating the range of reinforcing bar diameters of the standard for each site where the reinforcing bar is used;
An image assessment method using an image assessment device, comprising: An image judgment program for causing a computer to function as the image judgment device according to any one of claims 1 to 4, the image judgment program causing a computer to function as the image processing unit, the acquisition unit, and the standard judgment unit.

Images