JP6653885B2 - Image processing apparatus, image processing method, and program - Google Patents

Description

  The present invention relates to an apparatus and a method for image processing an X-ray photograph of a subject, and a program thereof.

  As a method of inspecting the internal structure of a subject without destroying the subject, an inspection method using X-ray photography has been conventionally used. Such a so-called non-destructive inspection is useful for investigating the positions of reinforcing bars and electric wires therein when drilling or cutting columns, beams, walls, etc. of a reinforced concrete building. It can also be used to investigate the situation inside walls of wooden buildings.

  As a general X-ray photography method for non-destructive inspection, a method of taking an X-ray photograph of a concrete building including a reinforcing bar and an electric wiring will be described below with reference to FIGS. 1 (a) and 2 (a) are schematic diagrams showing a radiographic method. A sighting device 20 having a target 21 for shielding X-rays is installed at an imaging point of a concrete object 10 including linear reinforcing bars 11 and 12 and curved electric wirings 13 and 14. “Shielding X-rays” means that X-rays are substantially shielded to the extent that they appear as a white pattern in an X-ray photograph, and a metal such as lead is used as a material of the target 21. As the target 21, as shown in FIG. 3, a target including a plurality of concentric circles, two axes perpendicular to the center of the concentric circles, a direction indicating mark such as an alphabet or an arrow, or a reference number can be used. .

  A device 30 for radiating X-rays radially from a center point of the concentric circle of the target 21 toward the vertical direction of the sight 20 is installed. An X-ray film 40 is set on the surface opposite to the surface on which the sight 20 is set at the imaging point of the subject 10. The X-rays radially emitted from the X-ray device 30 pass through the sight 20 and the subject 10, and are irradiated on the X-ray film 40. At that time, the rebars 11 and 12 and the electric wirings 13 and 14 shield the X-ray together with the target 21. Therefore, when the X-ray film 40 is developed, as shown in FIGS. 1 (b) and 2 (b), the portions shielded by the reinforcing bars 11, 12, the electric wires 13, 14 and the target 21 (image of the shield) An X-ray photograph 50 in which each of 11 'to 14' emerges white is obtained.

  Since the X-rays are emitted radially from the X-ray device 30, the image appearing on the X-ray photograph 50 is larger than the actual shield. That is, the target 21 appearing in the X-ray photograph 50 is enlarged around the center point more than the actual target 21. Similarly, the shielding images 11 'to 14' appearing in the X-ray photograph 50 are also enlarged in comparison with the actual shielding objects 11 to 14. These shields 11 to 14 are present in the subject 10 somewhere between the image 12 ′ shown in the X-ray photograph 50 and the X-ray emission unit of the X-ray apparatus 30. However, in this X-ray photography method, it is not possible to specify the positions of the shields 11 to 14 in the thickness direction of the subject 10.

  To describe in detail the rebar 12 as an example, the position of the rebar 12 in the thickness direction of the subject 10 cannot be specified by this X-ray photography method, but as shown in FIG. May exist at any position in the space between the image 12 ′ and the X-ray apparatus 30. Therefore, it is assumed that the reinforcing bars 12 are present at all positions in the space between the X-ray device 30 and the portion projected on the X-ray photograph 50 in the subject 10. That is, assuming that the rebar 12 is provided so as to be in contact with the surface of the subject 10 on the sight 20 side, the rebar 12 is located at a position closest to the center point in the subject 10 and the center of the rebar 12 A tangent to the point side is defined as one boundary line (inner boundary line) A. Assuming that the reinforcing bar 12 is provided so as to be in contact with the surface of the subject 10 on the X-ray film 40 side, the reinforcing bar 12 is located farthest from the center point in the subject 10 and the center of the reinforcing bar 12 is The tangent line between the point and the opposite side is defined as the other boundary line (outer boundary line) B. The reinforcing bar 12 may be present in a region D between the inner boundary line A and the outer boundary line B. Similar assumptions are made for other shields (reinforcing bar 11 and electrical wiring 13, 14). Then, the range in which the subject 10 is pierced or cut is determined so as to deviate from the region D where it is assumed that these shields 11 to 14 are present.

  Conventionally, it is assumed that these shields 11 to 14 are present, in which the X-ray photograph 50 is adjusted to the imaging point of the subject 10 and the magnification ratio of the image 21 ′ of the target 21 appearing in the X-ray photograph 50 is considered. The written area D was written at the shooting location. However, this method has problems that it takes a lot of trouble and time to write the above-mentioned area, and also lacks accuracy.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an image processing apparatus and method capable of accurately and easily specifying a place where a shielding object can exist in a single imaging in a nondestructive inspection using X-ray photography. It is.

  Another object of the present invention is to provide a program for such an image processing apparatus and method.

  In view of the above problems, as a result of intensive research, the present inventor has found that the sighting device provided with a target for shielding X-rays is installed at an imaging point of the subject including at least one object for shielding X-rays. A method of performing image processing on an X-ray photograph of a specimen, wherein an image of the X-ray photograph is input, and image data of an image corresponding to the shield in the subject is generated in the X-ray photograph image And resizing the shield image data based on a ratio of an image size corresponding to the target in the X-ray photograph image to a target size, and obtaining the obtained shield image resize data and the shield image data Of the image corresponding to each shield in the shield image resize data and the edge of the image corresponding to each shield in the shield image data. It has been found that the part where the shield can be located can be defined as the boundary line of the area where each shield can exist, and the location where the shield can exist can be accurately and easily identified by a single X-ray photograph. Invented the invention.

  That is, the image processing apparatus of the present invention takes an image of the subject in a state where the sight provided with the target for shielding the X-ray is installed at the imaging point of the subject including at least one object that blocks the X-ray. An apparatus for performing image processing on an X-ray photograph, a unit for inputting an X-ray image, and a unit for generating image data of an image corresponding to the shield in the subject in the X-ray image, Means for resizing the shield image data based on the ratio of the size of the image corresponding to the target to the target in the X-ray photograph image, and the obtained shield image resize data and the shield image data And a means for displaying the obtained combined image data, wherein an edge of an image corresponding to each shield in the shield image resize data and the shield image data are provided. Among the edges of the image corresponding to each shield in, characterized in that the boundary of regions each shield a portion located outermost may be present.

  Preferably, the apparatus further comprises means for displaying the X-ray image, and the shield image data is generated on the X-ray image. Thus, the shielding object image data can be generated while viewing the image of the X-ray photograph, so that the shielding object image data can be generated more accurately and easily.

  Preferably, the apparatus further comprises means for resizing the radiographic image based on the ratio, and the synthesized image data is obtained by further synthesizing the obtained radiographic resized image. Thereby, the combined image data can be displayed together with the actual size of the X-ray photograph and the area where the shielding object may exist.

  It is preferable that image data of at least a part of an image corresponding to the target in the X-ray image is generated and combined with the shielding object image data. By adding the image data of at least a part of the target, it is easy to perform the alignment when the shield image data is printed and attached to the imaging point of the subject.

  Preferably, the combined image data is further combined with at least one shield image intermediate resized data obtained by resizing the shield image data at a ratio between the ratio and 1.

  It is preferable that the apparatus further comprises means for displaying a position at which the subject is pierced or cut on the composite image data. Thus, the subject can be reliably pierced or cut without cutting the shield.

  Preferably, the apparatus further comprises means for printing the composite image data. Thus, by matching the printed composite image data to the imaging point of the subject, it is possible to easily specify a position where a shield may exist or a position where a hole or a hole is cut.

  Preferably, the subject is a building. Further, the image processing apparatus of the present invention is particularly useful for investigating the positions of reinforcing bars and electrical wirings in drilling or cutting pillars, beams, walls and the like of a reinforced concrete building.

  A program according to an embodiment of the present invention causes a computer to function as each unit of the image processing apparatus.

  An image processing method according to the present invention provides an X-ray image of an object in a state where a sight including an X-ray shielding target is installed at an imaging point of the object including at least one X-ray shielding object. A method for image processing a photograph, comprising: inputting an image of the X-ray photograph, generating image data of an image corresponding to the shield in the subject in the X-ray photograph image, The shield image data is resized based on the ratio of the size of the image corresponding to the target in the image and the size of the target, and the obtained shield image resize data and the shield image data are combined to form the shield. Among the edges of the image corresponding to each shield in the object image resize data and the edges of the image corresponding to each shield in the shield image data, the outermost portion may be located by each shield. The boundary region, and displaying the resulting synthesized image data.

  A program according to another embodiment of the present invention causes a computer to execute the image processing method.

  According to the present invention, an area where a shielding object can be present in a subject can be displayed as synthesized image data by image processing, so that the work time and labor required to specify a position where there is no shielding object are significantly reduced. Can be reduced.

(a) is a schematic diagram showing an X-ray photographing method when the subject is viewed from the front, and (b) is the X-ray photograph. (a) is a schematic diagram showing an X-ray photographing method when the subject is viewed from the side, and (b) is the X-ray photograph. FIG. 3 shows a target used for the radiography of FIGS. 1 and 2. FIG. 3 is a diagram illustrating the X-ray photography of FIGS. 1 and 2. FIG. 1 is a block diagram illustrating a configuration of an image processing device according to an embodiment of the present invention. 4 is a flowchart illustrating a flow of processing of the image processing method according to the first embodiment of the present invention. It is a figure showing an edit screen and an operation screen of a display part. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. FIG. 3 is a diagram illustrating steps of an image processing method according to the first embodiment of the present invention. 11 is a flowchart illustrating a flow of processing of an image processing method according to a second embodiment of the present invention. FIG. 7 is a diagram illustrating steps of an image processing method according to a second embodiment of the present invention. FIG. 7 is a diagram illustrating steps of an image processing method according to a second embodiment of the present invention. FIG. 9 is a diagram illustrating steps of an image processing method according to a third embodiment of the present invention. FIG. 9 is a diagram illustrating steps of an image processing method according to a third embodiment of the present invention. FIG. 9 is a diagram illustrating steps of an image processing method according to a third embodiment of the present invention. FIG. 9 is a diagram illustrating steps of an image processing method according to a third embodiment of the present invention.

[1] Image Processing Apparatus FIG. 5 is a block diagram illustrating a configuration of an image processing apparatus according to an embodiment of the present invention. The image processing apparatus 1 shown in FIG. 5 includes an X-ray photograph input unit 2, a display unit 3, an operation unit 4, a printing unit 5, a recording unit 6, and an image processing unit 7, all of which are connected by a bus 8. ing. The image processing unit 7 includes an image data generating unit 71, an image data resizing unit 72, an image data synthesizing unit 73, and a punching / cutting range display unit 74.

  The X-ray photograph input unit 2 is an X-ray photograph of the subject with a sight provided with a target for shielding X-rays installed at an imaging point of the subject including at least one object that shields X-rays. Enter For example, an X-ray photograph is captured as a digital image by a scanner, or digital data of the X-ray photograph is captured by a USB, a memory card, a LAN connection, or the like. The X-ray photograph input by the X-ray photograph input unit 2 is output as an X-ray photograph image and displayed on the display unit 3.

  The display unit 3 has an editing screen and an operation screen on which an X-ray photograph image is displayed. The user performs an image processing operation using the operation unit 4 on the screen of the display unit 3. On the editing screen of the display unit 3, both the X-ray photographic image and image data subjected to image processing described later may be displayed, or only the image data may be displayed. Further, the one displaying the X-ray image and the one not displaying the X-ray image may be displayed alternately.

  The operation unit 4 is used by a user to perform an operation in image processing performed on the image processing apparatus 1. The specific mode of the operation unit 4 is not particularly limited, and a known operation device such as a keyboard, a mouse, and a touch panel can be used.

  The printing unit 5 is for printing image data obtained by performing image processing on an X-ray photographic image. The specific mode of the printing unit 5 is not particularly limited, and a known printing device such as an ink jet printer or a laser printer can be used. As the printing substrate, general printing paper may be used, but a transparent film, an adhesive film, a transfer film, or the like is preferable so that the positional relationship can be easily grasped when the printing substrate is attached to a photographing point.

  The recording unit 6 records an input radiographic image, a program required for image processing, image data subjected to image processing, and the like. The recording unit 6 may be a semiconductor memory such as a DRAM flash memory or a magnetic recording medium such as an HDD.

  The image processing unit 7 is for performing image processing on the input radiographic image. Various image data processed by the image processing unit 7 is recorded in the recording unit 6 and displayed on the display unit 3 as appropriate.

  The image data generation unit 71 generates image data of a shield included in the X-ray photograph image. Specifically, an image is prepared by tracing at least a part of the image corresponding to the shield and the target included in the X-ray image. These image data may be created by the user using the operation unit 4 while looking at the display unit 3 or may be automatically created by a computer program. The user may modify the image data automatically created by the computer program. You may.

  The image data resizing unit 72 calculates the ratio between the size of the image corresponding to the target in the X-ray photographic image and the size of the actual target, and reduces / enlarges the shielding object image data based on the ratio. Output resize data. The reduction ratio may be calculated automatically by obtaining the size of the image corresponding to the target in the X-ray image by a computer program, and the user uses the operation unit 4 while viewing the display unit 3 to obtain the X-ray image. May be calculated by obtaining the size of the image corresponding to the target in the above.

  The image data synthesizing unit 73 synthesizes the shield image resize data and the shield image data, and outputs synthesized image data. Accordingly, as described above, the outermost portion of the edge of the image corresponding to the shield in the shield image resize data and the edge of the image corresponding to the shield in the shield image data has the shield. This represents the boundary of the area to be obtained. At that time, an X-ray photograph image may be synthesized. As a result, it is possible to display, on the X-ray photographic image, an area where a shield may exist. The X-ray photograph image may be reduced / enlarged together with the shielding object image data to obtain a resized X-ray photograph image. Further, the target image data may be further combined. This facilitates the alignment of the composite image data.

  When generating the composite image data, at least one shield image intermediate resize data obtained by reducing / enlarging the shield image data at a ratio between the ratio and 1 may be further combined.

  The perforation / cutting range display unit 74 displays a range for perforating or cutting the subject on the composite image data. The range to be pierced or cut is specified at a position on the composite image data where the X-rays are irradiated and other than a region where a shield may exist. Since the area where the shielding object can exist is displayed in the composite image data, the range can be reliably and easily determined to a position where the shielding object cannot exist.

[2] Image processing method (Embodiment 1)
FIG. 6 is a flowchart illustrating a flow of processing of the image processing method according to the first embodiment of the present invention. A method for performing image processing using the image processing apparatus 1 using an X-ray photograph 50 taken by the X-ray photographing method shown in FIG. 1A as an example of the X-ray photograph will be described in detail below. A description of the same parts as those described for the image processing apparatus in the above item [1] will be omitted. In addition, the content described in the item [2] regarding the image processing method can be applied to the image processing device in the above item [1].

  An X-ray photograph 50 of the subject 10 is input with the sight 20 having the target 21 for shielding X-rays installed at the imaging point of the subject 10 (S1). The X-ray photograph 50 input by the X-ray photograph input unit 2 is output as an X-ray photograph image 50A and displayed on the display unit 3 as shown in FIG. 7 (S2). An image corresponding to the target 21 included in the X-ray image 50A is referred to as a target image 21 '. As described above, the X-rays are radially emitted from the X-ray apparatus 30. Therefore, an image corresponding to the shield or the target 21 in the subject 10 is displayed on the X-ray photograph 50 after being magnified more than the real thing.

  The shape of the target used in the present invention is not particularly limited as long as the center point at which the X-ray apparatus 30 is located in the vertical direction and the size and direction of the X-ray photograph 50 can be known. And two axes perpendicular to each other at the center of the concentric circle.

  As shown in FIG. 7, the display unit 3 has an editing screen 31 on which an X-ray photograph image 50A is displayed and an operation screen 32. While viewing the editing screen 31 on which the X-ray image 50A is displayed, as shown in FIG. 8, image data 50B is created by tracing the axis of the target image 21 'in the X-ray image 50A (S3). By forming the image data 50B corresponding to the axis of the target image 21 ', the center point and the direction of the target image 21' become clear. An arrow may be provided in a part of the produced axis image data 50B so that the direction of the X-ray photograph can be seen at a glance. In the present embodiment, only the axis of the target image 21 'is traced, but the present invention is not limited to this, and concentric circles of the target image 21' may be traced, and the center point and direction of the target image 21 ' There is no particular limitation as long as it is clear. In the present embodiment, the editing screen 31 displayed on the display unit 3 is set as the editing range. However, the present invention is not limited to this, and the editing range of the X-ray photograph image 50A may be specified.

  As shown in FIG. 9, image data 50C is generated by tracing images corresponding to the linear reinforcing bars 11 and 12 and the curved electric wirings 13 and 14 that are shielding objects included in the X-ray image 50A (S4). ). Obtained object image data 50C is obtained when the objects 11 to 14 shown in FIG. 1 are provided so as to be in contact with the surface of the subject 10 on the X-ray film 40 side as shown in FIG. Represents the position of ~ 14. The image data 11 ′ and 12 ′ of the reinforcing bars 11 and 12 and the image data 13 ′ and 14 ′ of the electric wirings 13 and 14 may be distinguished from each other by changing colors and types of oblique lines.

  An enlargement ratio of the target image 21 'included in the X-ray photograph image 50A with respect to the actual target 21 is calculated (S5). The enlargement ratio can be calculated by obtaining the length L 'of an arbitrary portion of the target image 21' and obtaining the ratio L '/ L to the length L of the corresponding portion of the actual target 21. The length L 'is preferably the diameter of any of the concentric circles of the target image 21', and is obtained by calculating the width between the intersections of the axis image data 50B and the circle.

  Another example of calculating the magnification will be described with reference to FIGS. As shown in FIG. 10, an enclosing line M composed of a plurality of squares each having a size circumscribing a concentric circle of the actual target 21 is added to the editing screen 31 on which the X-ray photograph image 50A is displayed. The enclosing line M is enlarged, and as shown in FIG. 11, the target images 21 'included in the X-ray photographic image 50A are enlarged until they become circumscribed, respectively, to obtain an enclosing line M'. At this time, the point where the surrounding line M 'circumscribes the target image 21' is preferably the intersection of the target image 21 'and one axis of the axis image data 50B. The enlargement ratio of the surrounding line M 'corresponds to the above enlargement ratio of the target image 21'. The enlargement ratio of the target image 21 'may be calculated by the user using the operation unit 4 while viewing the display unit 3, or may be calculated automatically by a computer program.

  As shown in FIG. 12, the shielding object image data 50C and the target image data 50B are reduced using the reciprocal of the enlargement ratio of the target image 21 'as the reduction ratio (S6). Thereby, the obtained reduced shield image data 50D is obtained when the shields 11 to 14 shown in FIG. 1 are provided so as to be in contact with the sight 20 side of the subject 10 as shown in FIG. The positions of the shields 11 to 14 are shown. In the present embodiment, the target image data 50B corresponds to only the axis of the target image 21 ', and the shape does not change even if the target image 21' is reduced. Therefore, the image data 50B may be reduced in the same manner.

  As shown in FIG. 12, the X-ray photographic image 50A is similarly reduced based on the above-mentioned reduction ratio to produce a reduced X-ray photographic image 50E (S7). The target image 21 ″ in the reduced X-ray photographic image 50 </ b> E has the same size as the actual target 21 by performing the reduction at the above reduction ratio.

As shown in FIG. 13, the reduced shielding object image data 50D and the shielding object image data 50C are combined to create combined image data 50F (S8). As shown in FIG. 13, at the edges of the shield images 11 'to 14' of the shield image data 50C and the edges of the shield images 11 '' to 14 '' of the shield image data 50D, the shield image data 50C The long sides outside the shielding object images 11 'to 14' and the long sides inside the shielding object images 11 "to 14" of the shielding object image data 50D are respectively located at the outermost sides. That is, the long sides outside the shield image 11 'to 14' of the shield image data 50C correspond to the outer boundary lines B shown in FIG. 4, respectively, and the shield images 11 '' to 14 'of the shield image data 50D. Each of the long sides inside 'corresponds to the inside boundary line A shown in FIG. Therefore, between the inner boundary line A of the shielding object images 11 '' to 14 '' and the outer boundary line B of the shielding object images 11 'to 14', the shielding objects 11 to 14 in the subject 10 may exist. region D ₁₁ to D ₁₄ are respectively provided.

At that time, it is preferable that the reduced radiographic image 50E is also synthesized. The obtained composite image data 50F shows that the target image 21 '' of the reduced X-ray image has the same dimensions as the actual target 21, so that the target image 21 '' of the actual size and the shields 11 to 14 are provided. there can be displayed together with area D ₁₁ to D ₁₄ that may be present (S9). When generating the composite image data, as shown in FIG. 14, at least one intermediate reduction obtained by reducing the shielding object image data 50C by a ratio smaller than the reduction ratio (ratio between the reduction ratio and 1). The shielding object image data 50D 'may be further combined.

As shown in FIG. 15, in the synthesized image data 50F, the image data 50C, instead of 50D and 50D ', may be displayed region D ₁₁ to D ₁₄ obtained by combining those image data. Thus, it can grasp the position of the region D ₁₁ to D ₁₄ that shield 11-14 may exist more clearly.

As shown in FIG. 16, a range E in which the subject 10 is pierced or cut is displayed on the composite image data 50F (S10). Because the composite image data 50F area shield may be present in D ₁₁ to D ₁₄ is displayed by specifying the piercing and cutting range E in a region other than the region D ₁₁ to D _14, cutting the shield The subject can be reliably pierced or cut without the need. As shown in FIG. 17, an image obtained by excluding the reduced X-ray photograph image 50E from the composite image data 50F may be displayed.

  The composite image data 50F is printed (S11). By matching the printed composite image data to the imaging point of the subject, it is possible to specify a position where a shield may exist or a position where a hole or a cut is performed. At this time, it is desirable that the position where the target 21 of the photographing point is attached and the target image 21 'of the composite image data 50F overlap. Therefore, it is preferable to print the composite image data 50F on a transparent film. Thereby, when pasting to the photographing point, it can be attached in accordance with the position information of the target 21 described at the photographing point. At this time, by printing the composite image data 50F excluding the reduced X-ray photographic image 50E as shown in FIG. 17, it is possible to easily grasp the position information described at the photographing point.

(Embodiment 2)
FIG. 18 is a flowchart showing the flow of the processing of the image processing method according to the second embodiment of the present invention. Steps S1 to S5 are the same as in the first embodiment.

  As shown in FIG. 19, the shield image data 50C is enlarged based on the enlargement ratio of the target image 21 'to generate enlarged shield image data 50G (S6'). In the present embodiment, the shield image data 50C indicates the positions of the shields 11 to 14 when the shields 11 to 14 shown in FIG. 1 are provided so as to be in contact with the surface of the subject 10 on the sight 20 side. The long sides inside the shielding object images 11 'to 14' of the shielding object image data 50C respectively correspond to the inner boundary lines A shown in FIG. On the other hand, the shield images 11 ′ ″ to 14 ′ ″ of the enlarged shield image data 50G are provided such that the shields 11 to 14 illustrated in FIG. 1 are in contact with the surface of the subject 10 on the X-ray film 40 side. In FIG. 4, the long sides outside the shielding object images 11 ′ ″ to 14 ′ ″ of the shielding object image data 50G correspond to the outer boundary lines B shown in FIG. Is equivalent to

As shown in FIG. 20, the shield image data 50C and the enlarged shield image data 50G are combined to create combined image data 50H (S8). Thereby, as described above, the long sides inside the shield image 11 'to 14' of the shield image data 50C respectively represent the inner boundary lines A, and the shield image 11 '''of the shield image data 50G. since the outer long side of 14 '''are each represent an outer boundary line B, it is possible to display the region D ₁₁ to D ₁₄ that shields in the subject 10 may be present, respectively. Similar to the embodiment 1, as shown in FIGS. 14 and 15, may be further synthesized image data having a magnification of the intermediate image data 50C and 50G, synthesizes these image data area D ₁₁ ~ D ₁₄ may be displayed.

  Based on the obtained composite image data 50H, similarly to the first embodiment, the range in which the subject 10 is pierced or cut is displayed (S9 '), and the composite image data 50H is printed (S10'). At this time, the target image data 50B in the composite image data 50H has a size larger than the actual target 21 by the above-mentioned enlargement ratio. The composite image data 50H can be printed so as to have the same size as the target 21 of FIG.

  In the embodiment described above, the X-ray photograph image 50A is displayed on the display unit 3 and the image processing is performed. However, the present invention is not limited to this, and the step S2 may be omitted. That is, the above-described image processing may be executed by a computer program without displaying the X-ray photograph image 50A on the display unit 3, and only the obtained image data (particularly, composite image data) may be displayed.

  In the embodiment described above, both the X-ray image and the target image data are displayed in the composite image data 50F, but the present invention is not limited to this, and only one of the X-ray image and the target image data is displayed. May be displayed.

  In the present embodiment, a concrete building including a reinforcing bar and electric wiring is used as a subject.However, the present invention is not limited to this, and is applicable to anything that can be inspected by non-destructive inspection using X-rays. is there. For example, the present invention can be applied to the case of inspecting the internal structure of a wall of a wooden building.

(Embodiment 3)
An image processing method according to Embodiment 3 of the present invention will be described below with reference to FIGS. FIG. 21 is image data created based on an X-ray photographic image (not shown) having an image corresponding to the shield 15 obtained by photographing the subject including the shield 15 using the target 21. , And a shield image 15 ′ and target image data 50I. The target image data 50I of this embodiment is image data obtained by tracing an image corresponding to a plurality of concentric circles of the target 21 and two axes orthogonal to each other at the center point of the concentric circles. In this embodiment, no X-ray photographic image is displayed.

  The reduction ratio of this embodiment is the same as that of the first embodiment. FIG. 22 shows a reduced shielding object image 15 '' and reduced target image data 50I 'reduced around the center point of the concentric circle based on the reduction ratio.

The reduced shield image 15 ″ and the reduced target image data 50I ′ of FIG. 22 are combined with the shield image 15 ′ of FIG. FIG. 23 shows the obtained composite image data 50J. As shown in FIG. 23, the left side (boundary line A) of the shielding object image 15 ′ corresponds to one of the outermost sides of the region where the shielding object 15 may exist. In addition, the right side of the shielding object image 15 ′ and the right side of the reduced shielding object image 15 ″ intersect at the intersection C, and the right side (boundary line B ₁ ) of the reduced shielding object image 15 ″ above the intersection C and the intersection point The right side (boundary line B ₂ ) of the shield image 15 ′ below C corresponds to the other outermost side of the area where the shield 15 may exist.

As shown in FIG. 24, region D ₁₅ is represented that shield 15 may be present between the boundary line A and the boundary line B _1, B _2. This makes it possible to specify the position where the perforation or cutting is performed while avoiding the position where the shielding object 15 may exist.

[3] Program A program according to an embodiment of the present invention is a program for causing a computer to function as each unit of the above-described image processing apparatus. A program according to another embodiment of the present invention is a program for causing a computer to execute the above-described image processing method.

  A software program stored in a recording unit of a computer in an apparatus or a system connected to various devices for realizing each component of the image processing apparatus and method of the present invention, and for realizing each component, is also included in this book. Included in the invention. Means for supplying the program to the computer, for example, a storage medium storing the program are also included in the present invention.

  Executing the program of the present invention not only realizes the image processing apparatus and method of the present invention, but also realizes the image processing apparatus and method in cooperation with other software running on a computer. Included in the invention.

DESCRIPTION OF SYMBOLS 1 ... Image processing apparatus 2 ... X-ray photograph input part 3 ... Display part 4 ... Operation part 5 ... Printing part 6 ... Recording part 7 ... Image processing part
71 ・ ・ ・ Image data generator
72 ・ ・ ・ Image data resize section
73 ・ ・ ・ Image data synthesizer
74 ・ ・ ・ Perforation / cutting range display
10 ... subject
11,12 ・ ・ ・ Rebar
13,14 ・ ・ ・ Electrical wiring
20 ... sightsight
21 ・ ・ ・ Target
30 ・ ・ ・ X-ray equipment
40 ・ ・ ・ X-ray film
50 ... X-ray photograph

Claims (18)

An apparatus for image-processing an X-ray photograph of the subject in a state where an sight having a target for shielding the X-ray is installed at an imaging point of the subject including at least one X-ray shielding object. hand,
Means for inputting a radiographic image;
Means for generating image data of an image corresponding to the shield in the subject in the X-ray image;
Means for resizing the shielding object image data based on a ratio between a size of an image corresponding to the target in the radiographic image and a size of the target,
Means for combining the obtained shield image resize data and the shield image data,
Means for displaying the obtained composite image data,
The outermost portion of the edge of the image corresponding to each shield in the shield image resize data and the edge of the image corresponding to each shield in the shield image data is a region where each shield can exist. An image processing apparatus characterized in that the boundary line is a boundary line. The image processing apparatus according to claim 1,
Means for displaying the radiographic image,
An image processing apparatus, wherein the shielding object image data is generated on the radiographic image. The image processing apparatus according to claim 1, wherein
Means for resizing the radiographic image based on the ratio,
An image processing apparatus, wherein the synthesized image data is obtained by further synthesizing the obtained resized X-ray image.   The image processing apparatus according to claim 1, wherein image data of at least a part of an image corresponding to the target in the X-ray image is generated and combined with the shielding object image data. Image processing apparatus.   5. The image processing apparatus according to claim 1, wherein the combined image data is at least one shield image intermediate resize obtained by resizing the shield image data at a ratio between the ratio and 1. 5. An image processing apparatus wherein data is further combined.   The image processing apparatus according to claim 1, further comprising a unit configured to display a position at which the subject is pierced or cut in the composite image data.   The image processing apparatus according to claim 1, further comprising a unit that prints the composite image data.   The image processing apparatus according to claim 1, wherein the subject is a building. A method of performing image processing on an X-ray photograph of the subject with a sight provided with a target for shielding X-rays installed at an imaging point of the subject including at least one object that shields X-rays. hand,
Input the radiographic image,
In the X-ray image, generate image data of an image corresponding to the shield in the subject,
The shield image data is resized based on a ratio between the size of the image corresponding to the target and the size of the target in the X-ray image,
The obtained shield image resize data and the shield image data are combined to form an edge of an image corresponding to each shield in the shield image resize data and an edge of an image corresponding to each shield in the shield image data. Of these, the outermost part is defined as the boundary of the area where each shield can exist,
Displaying the obtained composite image data,
An image processing method comprising: The image processing method according to claim 9,
Displaying the radiographic image,
An image processing method, wherein the shielding object image data is generated on the radiographic image. In the image processing method according to claim 9 or 10,
Resizing the radiographic image based on the ratio,
An image processing method, comprising: synthesizing the obtained radiographic resized image with the shield image resize data and the shield image data to generate the synthetic image data.   The image processing method according to any one of claims 9 to 11, wherein image data of at least a part of the target in the X-ray image is generated and combined with the shielding object image data. .   The image processing method according to any one of claims 9 to 12, wherein the shielding object image data is combined with the shielding object image data at a ratio between the ratio and 1 when the shielding object image resizing data and the shielding object image data are combined. An image processing method, further comprising synthesizing at least one resized shielded object image intermediate resized data. The image processing method according to any one of claims 9 to 13,
An image processing method, wherein a position at which the subject is punched or cut is displayed in the composite image data. The image processing method according to any one of claims 9 to 14,
An image processing method, comprising printing the composite image data.   The image processing method according to claim 9, wherein the subject is a building.   A program for causing a computer to function as each unit of the image processing apparatus according to claim 1.   A program for causing a computer to execute the image processing method according to any one of claims 9 to 16.