JP2018173277A - Information processing equipment, information processing method, and, program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To identify the measurable area before performing the reinforcement bar measuring process.SOLUTION: An information processing apparatus 100 is an information processing apparatus that supports inspection of a reinforcement bar arrangement arranged by a plurality of reinforcement bars. The information processing apparatus 100 includes a plane information acquiring unit 110 and an identification information generating unit 120. The plane information acquiring unit 110 acquires plane information that specifies a position of a target plane tp on the three-dimensional space constituted by the plurality of reinforcement bars where a position is based on an imaging device 10 that photographs the plurality of reinforcement bars. The identification information generating unit 120 generates identification information for identifying the measurement target area and the non-measurement target area on the captured image based on the plane information acquired at least by the plane information acquiring unit 110.SELECTED DRAWING: Figure 4

Description

  The present specification relates to an information processing apparatus, an information processing method, and a program for supporting a bar arrangement examination.

  Conventionally, in the construction of a reinforced concrete structure or the like, a bar arrangement inspection is performed to check whether the reinforcing bars are correctly arranged based on a bar arrangement diagram or the like. In such bar arrangement inspection, introduction of a system for supporting bar arrangement inspection (hereinafter referred to as “bar arrangement inspection support system”) is being considered from the viewpoint of improving the efficiency of inspection and reducing the burden on the inspector.

  As an example of reinforcing bar inspection support system, reinforcing bar inspection support that derives the distance between adjacent nodes based on the images of multiple nodes of the reinforcing bar and derives the diameter of the corresponding reinforcing bar in the distance between adjacent nodes A system is known (see Patent Document 1).

Japanese Patent Laying-Open No. 2015-001146

  By the way, in the reinforcing bar inspection, reinforcing bar measurement processing is performed for measuring the type of reinforcing bar, the number of reinforcing bars, the interval between reinforcing bars, and the like based on the image of the reinforcing bar. However, there are cases where measurement results can be obtained only from a partial region in the image due to various restrictions.

  In view of the above situation, an object according to one aspect of the present invention is to provide a technique for specifying a measurable region before performing a reinforcing bar measurement process.

  An information processing apparatus according to an aspect of the present invention is an information processing apparatus that supports a bar arrangement inspection of a plurality of reinforcing bars, and is a position based on an imaging apparatus that images the plurality of reinforcing bars. A plane information acquisition unit that acquires plane information for specifying a position of a plane constituted by the plurality of reinforcing bars in a three-dimensional space; and at least the plane information acquired by the plane information acquisition unit, based on the plane information acquired by the plane information acquisition unit A region on the captured image that is an image of the plurality of reinforcing bars imaged in step 1 and a measurement target region that is used for reinforcing bar measurement in the bar arrangement inspection, and a region on the captured image that is the reinforcing bar measurement And an identification information generation unit that generates identification information for identifying a non-measurement target area that is an area that is not used.

  An information processing method according to an aspect of the present invention is an information processing method that supports a bar arrangement inspection of a plurality of reinforcing bars, and is a position based on an imaging device that images the plurality of reinforcing bars. The plane information for specifying the position of the plane composed of the plurality of reinforcing bars in the three-dimensional space is acquired, and the imaging is an image of the plurality of reinforcing bars captured by the recording apparatus based on at least the plane information. A measurement target area that is an area on the image and is used for reinforcing bar measurement in the bar arrangement inspection, and a non-measurement area that is an area on the captured image and is not used for the reinforcing bar measurement. Identification information for identification is generated.

  A program according to an aspect of the present invention is a position relative to an imaging device that photographs the plurality of reinforcing bars in an information processing device that supports a bar arrangement inspection of the plurality of reinforcing bars, A region on a captured image that is an image of the plurality of reinforcing bars captured by the imaging device based on at least the planar information, acquiring plane information for specifying a position of a plane composed of reinforcing bars in a three-dimensional space An identification for identifying a measurement target region that is a region used for reinforcing bar measurement in the bar arrangement inspection and a non-measurement region that is a region on the captured image that is not used for the reinforcing bar measurement A process for generating information is executed.

  According to said aspect, the area | region which can be measured can be specified before performing a reinforcing bar measurement process.

1 is a diagram illustrating a configuration of a bar arrangement inspection support system 1. FIG. It is a figure for demonstrating the imaging | photography method of the to-be-photographed object Rs. 2 is a diagram illustrating a hardware configuration of an information processing apparatus 100. FIG. 2 is a diagram illustrating a functional configuration of an information processing apparatus 100. FIG. It is a flowchart which shows an example of information processing. It is the figure which illustrated the functional structure of the plane information acquisition part 110 and the identification information generation part 120. It is a flowchart which shows an example of a plane information acquisition process. It is a figure for demonstrating the coordinate system on real space. It is a flowchart which shows an example of an identification information generation process. It is a figure for demonstrating about parallax. It is the figure which showed an example of the left eye image and the right eye image. It is another figure for demonstrating about parallax. It is another figure for demonstrating about a parallax. It is a figure explaining the calculation method of the parallax constraint line L1. It is a figure explaining the calculation method of a distance constraint line. It is a figure explaining identification information. It is a flowchart which shows an example of an identification information utilization process. It is the figure which showed the example which displayed the image so that measurement object area | region A1 and non-measurement area | region A2 could be identified. It is the figure which illustrated the composition of the bar arrangement inspection support system. 2 is a diagram illustrating a functional configuration of an information processing apparatus 200. FIG. It is the figure which illustrated the composition of the bar arrangement inspection support system 3. 2 is a diagram illustrating a functional configuration of an information processing apparatus 300. FIG.

[First Embodiment]
FIG. 1 is a diagram illustrating a configuration of a bar arrangement inspection support system 1. FIG. 2 is a diagram for explaining a method of photographing the subject Rs. FIG. 3 is a diagram illustrating a hardware configuration of the information processing apparatus 100.

  The bar arrangement inspection support system 1 is a system for inspecting a plurality of reinforcing bars that are the subject Rs. The reinforcing bar inspection support system 1 performs a reinforcing bar measurement process for measuring the type, number, interval, and the like of the reinforcing bars, and checks whether the reinforcing bars are arranged as designed based on the result of the reinforcing bar measurement process. The bar arrangement inspection support system 1 includes an imaging device 10 and an information processing device 100.

  In FIG. 1, the photographing apparatus 10 and the information processing apparatus 100 are connected by a wired cable. The imaging device 10 and the information processing device 100 only have to be configured so as to be able to exchange data with each other, and are not limited to being wired and may be connected so as to be able to communicate wirelessly. Moreover, the imaging device 10 and the information processing device 100 may exchange data via a portable recording medium such as a USB (Universal Serial Bus) memory.

  The photographing apparatus 10 is a digital camera that photographs a subject Rs and generates a digital image of the subject (hereinafter referred to as a photographed image). In this example, the imaging device 10 is a stereo imaging device that generates a stereo image that is a captured image. The left-eye image and the right-eye image, which are the respective captured images constituting the stereo image, are targeted for different capturing areas that partially overlap each other. Specifically, as illustrated in FIG. 2, the imaging device 10 generates a stereo image including a left-eye image targeting the imaging region SA1 and a right-eye image targeting the imaging region SA2, and the information processing device 100 Output to.

  The information processing apparatus 100 is a bar arrangement inspection support apparatus that supports bar arrangement inspection of a plurality of reinforcing bars. The information processing apparatus 100 is, for example, a standard computer, and a portable recording medium into which a processor 101, a memory 102, a storage 103, an interface device 104, and a portable recording medium 106 are inserted as shown in FIG. A driving device 105 and a display 107 are provided, and these are connected to each other by a bus 108.

  The processor 101 is, for example, a central processing unit (CPU), a micro processing unit (MPU), a digital signal processor (DSP), and the like, and executes a programmed process by executing a program.

  The memory 102 is, for example, a RAM (Random Access Memory). The memory 102 temporarily stores the program or data stored in the storage 103 or the portable recording medium 106 when executing the program. The storage 103 is, for example, a hard disk or a flash memory. The storage 103 is used for storing various data and programs.

  The interface device 104 is a circuit that exchanges data with devices other than the information processing device 100 (for example, the photographing device 10). The portable recording medium driving device 105 accommodates a portable recording medium 106 such as an optical disk or a compact flash (registered trademark). The portable recording medium 106 has a role of assisting the storage 103. The storage 103 and the portable recording medium 106 are examples of non-transitory computer-readable storage media each storing a program.

  The display 107 is a display device that displays images and various types of information. The display 107 is, for example, a liquid crystal display, an organic EL (organic electro-luminescence) display, or the like.

  The configuration illustrated in FIG. 3 is an example of the hardware configuration of the information processing apparatus 100, and the information processing apparatus 100 is not limited to this configuration. The information processing apparatus 100 may be a dedicated device instead of a general-purpose device. The information processing apparatus 100 may include an electrical circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA) instead of or in addition to a processor that executes a program. Processing may be performed.

  FIG. 4 is a diagram illustrating a functional configuration of the information processing apparatus 100. FIG. 5 is a flowchart illustrating an example of information processing. Information processing performed by the information processing apparatus 100 will be described with reference to FIGS. 4 and 5.

  As illustrated in FIG. 4, the information processing apparatus 100 includes a plane information acquisition unit 110, an identification information generation unit 120, a measurement unit 130, a display control unit 140, and a display unit 150. In the information processing apparatus 100, for example, the processor 101 loads the program recorded in the storage 103 to the memory 102 and executes the program, thereby realizing various functions illustrated in FIG.

  The plane information acquisition unit 110 acquires plane information for specifying a position in a three-dimensional space of a plane to be measured (hereinafter, referred to as a target plane) composed of a plurality of reinforcing bars. Here, the position on the three-dimensional space specified by the plane information is a position based on the imaging apparatus 10 that images a plurality of reinforcing bars.

  The identification information generation unit 120 generates identification information for identifying the measurement target region and the non-measurement target region based on at least the plane information acquired by the plane information acquisition unit 110. Here, the measurement target area is an area on the captured image that is used for reinforcing bar measurement processing in the reinforcement arrangement inspection, and the non-measurement area is a reinforcement measurement in the reinforcement arrangement inspection on the captured image. It is an area that is not used for processing. The photographed image is an image of a plurality of reinforcing bars (subject Rs) photographed by the photographing apparatus 10.

  The measurement unit 130 performs reinforcing bar measurement on a plurality of reinforcing bars based at least on the captured image and the identification information. More specifically, the measurement unit 130 specifies a measurement target region in the captured image based on the identification information, and performs reinforcing bar measurement based on the information on the specified region.

  The display control unit 140 causes the display unit 150 to display the captured image so that the measurement target region and the non-measurement target region on the captured image can be identified based on at least the captured image and the identification information. The display unit 150 is, for example, the display 107 illustrated in FIG.

  In the information processing apparatus 100, as shown in FIG. 5, first, the plane information acquisition unit 110 acquires plane information of the target plane (step S100), and the identification information generation unit 120 is based on the plane information acquired in step S100. Identification information is generated (step S200). Then, the information processing apparatus 100 finally executes various processes such as a reinforcing bar measurement process using the identification information generated in step S200 (step S300).

  As described above, in the information processing apparatus 100, the identification information for identifying the measurement target region and the non-measurement target region on the captured image is generated before the reinforcing bar measurement process is performed based on the captured image. Thereby, the information processing apparatus 100 can specify the region that can be measured by the reinforcing bar measurement before performing the reinforcing bar measurement process.

  Therefore, for example, the information processing apparatus 100 uses the identification information to display the captured image on the display unit 150 so that the measurement target region and the non-measurement target region on the captured image can be identified before performing the reinforcing bar measurement processing. Can be displayed. For this reason, the user can easily determine whether or not the reinforcing bar measurement processing should be performed based on the displayed information. Thereby, execution of useless reinforcing bar measurement processing can be avoided.

  Furthermore, the information processing apparatus 100 can specify the measurement target region in the captured image by using the identification information, for example, and perform the reinforcing bar measurement processing based on the information on the specified region. Therefore, the time required for the reinforcing bar measurement process can be shortened.

  FIG. 6 is a diagram illustrating functional configurations of the plane information acquisition unit 110 and the identification information generation unit 120. FIG. 7 is a flowchart illustrating an example of plane information acquisition processing. FIG. 8 is a diagram for explaining a coordinate system in the real space. FIG. 9 is a flowchart illustrating an example of the identification information generation process. FIG. 10 is a diagram for explaining the parallax. FIG. 11 is a diagram illustrating an example of a left eye image and a right eye image. FIG. 12 is another diagram for explaining the parallax. FIG. 13 is still another diagram for explaining the parallax. FIG. 14 is a diagram illustrating a method for calculating the parallax constraint line L1. FIG. 15 is a diagram illustrating a method for calculating a distance constraint line. FIG. 16 is a diagram for explaining the identification information. FIG. 17 is a flowchart illustrating an example of the identification information utilization process. FIG. 18 is a diagram illustrating an example in which an image is displayed so that the measurement target region A1 and the non-measurement target region A2 can be identified. Hereinafter, information processing performed by the information processing apparatus 100 will be described in more detail with reference to FIGS. 6 to 18.

  As shown in FIG. 6, the plane information acquisition unit 110 includes a stereo image acquisition unit 111 and a plane information generation unit 112. Further, the identification information generation unit 120 includes a parallax constraint calculation unit 121 and a distance constraint calculation unit 122, as shown in FIG.

  The stereo image acquisition unit 111 acquires a stereo image that is a captured image output from the imaging device 10. The stereo image acquisition unit 111 outputs the acquired stereo image to the plane information generation unit 112.

  The plane information generation unit 112 generates plane information of the target plane based on at least the stereo image acquired by the stereo image acquisition unit 111. The plane information generation unit 112 outputs the generated plane information to the identification information generation unit 120.

  The parallax constraint calculation unit 121 is a region on the stereo image that corresponds to a region on the target plane that is identified by at least the specification information and the plane information of the imaging device 10 and is not captured redundantly in the stereo image (hereinafter, non-photographing). Are identified as non-measurement areas. More specifically, the parallax constraint calculation unit 121 acquires, as the specification information of the imaging device 10, the baseline length of the imaging device 10, the focal length of the imaging device 10, and the pixel pitch of the imaging device 10. A non-overlapping area specified based on the information and the plane information is identified as a non-measurement area.

  The reason for identifying the non-overlapping area as the non-measurement area is that the three-dimensional information is not generated from the stereo image for the non-overlapping area, so the information for the reinforcing bar measurement process is not sufficient and is not suitable for the reinforcing bar measurement process. It is.

  The distance constraint calculation unit 122 is an area on the captured image corresponding to an area on the target plane whose distance from the imaging apparatus 10 specified based on at least the plane information is outside a predetermined range (hereinafter referred to as a non-corresponding distance area). .) Is identified as a non-measurement target area.

  The reason for identifying the non-corresponding distance area as the non-measurement area is the following two points. First, for a non-corresponding distance region that is too far from the imaging device 10, the reinforcing bar image is too small for the resolution of the captured image. If the reinforcing bar image is too small, the measurement accuracy is deteriorated in the reinforcing bar measurement processing performed based on the captured image. In addition, for a non-corresponding distance region where the distance from the image capturing device 10 is too close, the position in the image on which the same object is projected differs greatly between the left eye image and the right eye image constituting the stereo image, and as a result. This is because the search time becomes long in the matching process when generating the three-dimensional information.

  When the plane information acquisition unit 110 starts the plane information acquisition process, first, as shown in FIG. 7, the stereo image acquisition unit 111 acquires a stereo image (step S101). Here, the stereo image acquisition unit 111 may acquire a stereo image output from the imaging device 10 or may acquire a stereo image from a storage device that stores the stereo image captured by the imaging device 10. Good.

  Thereafter, the plane information generation unit 112 generates three-dimensional data based on the stereo image (step S102). Here, the plane information generation unit 112 generates three-dimensional data from the stereo image using a known stereo matching technique.

  Next, the plane information generation unit 112 identifies the target plane from the three-dimensional data (step S103). The target plane is specified from the three-dimensional data by, for example, calculating a plurality of planes (virtual planes) based on at least three points located on the subject Rs specified by the three-dimensional data, and further, for each of the virtual planes. The points on the subject Rs whose distance from the virtual plane is within a predetermined range are counted, and the plane closest to the imaging device 10 among the virtual planes having a predetermined number or more within the predetermined range is specified as the target plane. , Is done by.

  Finally, the plane information generation unit 112 generates plane information for specifying the position of the target plane in the three-dimensional space (step S104), and the plane information acquisition unit 110 ends the plane information generation process. The plane information is, for example, a plane equation (ax + by + cz + d = 0) of the target plane or parameters (a, b, c, d) of the plane equation. As shown in FIG. 8, it is desirable that the plane equation or its parameters be calculated with respect to an xyz orthogonal coordinate system in which the optical axis direction of the photographing apparatus 10 is the z-axis direction. The optical axis direction is not limited to the physical information of the actual device, but may be a virtual one based on the stereo parallelization process associated with the three-dimensional data generation process (step S102).

  When the identification information generation unit 120 starts the identification information generation processing, as shown in FIG. 9, the parallax constraint calculation unit 121 performs processing from step S201 to step S203, and the distance constraint calculation unit 122 performs processing from step S204 to step S206. I do.

The parallax constraint calculation unit 121 first calculates the parallax p generated in the stereo image (step S201). As shown in FIG. 10, in the imaging apparatus 10 that is a stereo imaging apparatus, an imaging area on the target plane tp projected on the left-eye sensor 11 (hereinafter, referred to as a left-eye imaging area) and a right-eye sensor 12. Imaging areas on the target plane tp to be projected (hereinafter referred to as right-eye imaging areas) are shifted from each other by the baseline length bl. For this reason, in the left eye photographing region and the right eye photographing region, regions having a width g equal to the base line length bl are generated. The parallax p (mm) generated in each of the left eye image PL and the right eye image PR shown in FIG. 11 is generated by projecting the region of the width g onto each sensor, and is calculated by the following equation.
p = f × bl / z0 (1)

  Here, f is the focal length (mm) of the photographing apparatus 10. bl is the base line length (mm) of the photographing apparatus 10. z0 is the distance (mm) from the imaging device 10 to the target plane tp. The distance z0 is a distance from the reference plane of the photographing apparatus 10.

Further, the parallax p _pix (pixel) obtained by converting the parallax p (mm) into a pixel unit is calculated by the following expression using the pixel pitch a (mm) of the photographing apparatus 10 (sensor 11 and sensor 12).
p _pix = p / a (2)

  Although FIG. 10 shows an example in which the target plane tp is directly facing the imaging apparatus 10, the target plane tp may be rotated left and right with respect to the imaging apparatus 10 as shown in FIG. Here, “rotating left and right” means that the normal line of the target plane tp is tilted in the x-axis direction (that is, the left-right direction) with respect to the optical axis of the imaging apparatus 10.

  In this case, when calculating the parallax p that occurs in the left-eye image PL, as shown in FIG. 12, the parallax p is set with the distance from the imaging device 10 to the left end of the right-eye imaging region as the distance z0 in Expression (1). What is necessary is just to calculate. On the other hand, when calculating the parallax p generated in the right-eye image PR, the parallax p may be calculated by setting the distance from the imaging device 10 to the right end of the left-eye imaging region as the distance z0 in Expression (1).

  Further, the target plane tp may be rotated up and down with respect to the imaging device 10 as shown in FIGS. 13 (a) and 13 (b). Here, “rotating up and down” means that the normal line of the target plane tp is inclined in the y-axis direction (that is, the up-and-down direction) with respect to the optical axis of the imaging apparatus 10.

  In this case, the parallax p in the image is not constant. This is because the distance from the imaging device 10 to the left end of the right eye imaging region (or the right end of the left eye imaging region) is not constant as shown in FIG. However, since the target plane tp is a plane, the parallax p generated in the target plane tp changes linearly. For this reason, the parallax at least at two points may be calculated. For example, as shown in FIG. 13A, a parallax p1 at the upper end of the left-eye image PL is calculated by setting a distance z1 from the imaging device 10 to the upper left position C1 of the right-eye imaging region as a distance z0 in Expression (1). The parallax p2 at the lower end of the left-eye image PL may be calculated by setting the distance z2 from the imaging device 10 to the lower left position C2 of the right-eye imaging region as the distance z0 in Expression (1).

  Thereafter, the parallax constraint calculation unit 121 calculates a parallax constraint position located at the boundary between the overlapping region and the non-overlapping region (step S202). In step S201, as shown in FIGS. 14A and 14B, the distances z1 and z2 to the leftmost two points (position E1 and position E2) of the right-eye imaging region and the distances z1 and z2 are calculated. If the parallaxes p1 and p2 are calculated, the position CE1 corresponding to the position E1 and the position E2 on the left eye image PL as shown in FIG. The position CE2 is calculated. Note that the positions CE1 and CE2 are parallax restricted positions.

  Finally, the parallax constraint calculation unit 121 calculates a parallax constraint line based on the two parallax constraint positions (step S203). In step S202, as shown in FIG. 14A, if the positions CE1 and CE2 that are two parallax constraint positions are calculated, the parallax constraint line L1 that is a straight line connecting these positions is calculated. To do. The parallax constraint line L1 is a line on the left-eye image PL indicating the boundary between the overlapping region and the non-overlapping region.

  Note that the parallax constraint line on the right-eye image can be calculated in the same manner by performing the above-described method by replacing the right and left.

  On the other hand, the distance constraint calculation unit 122 first acquires distance constraint information (step S204). The distance constraint information is information for designating a distance range from the imaging apparatus 10 suitable for reinforcing bar measurement, and includes, for example, the shortest distance zn and the longest distance zf. The distance constraint calculation unit 122 may acquire the distance constraint information by reading the distance constraint information stored in advance in the storage 103. In addition, the distance constraint calculation unit 122 may acquire the distance constraint information by calculating the distance constraint information based on the specification information of the imaging apparatus 10, information on the processing time allowed for the reinforcing bar measurement processing, and the like. Further, the distance constraint information may be calculated based on the captured image acquired by the imaging device 10. For example, the distance constraint information may be calculated based on the ratio of noise components included in the captured image.

  Next, the distance constraint calculation unit 122 calculates a linear equation indicating a straight line of the target plane tp based on the distance constraint information (step S205). Here, the distance constraint calculation unit 122, as shown in FIG. 15, shows a linear equation k2 (ax + by + e1 = 0, z =) indicating the position on the target plane tp at the longest distance zf described above from the imaging device 10. zf) and a linear equation k3 (ax + by + e2 = 0, z = zn) indicating the position on the target plane tp at the shortest distance zn described above from the imaging device 10 are calculated.

  Finally, the distance constraint calculation unit 122 calculates a distance constraint line (step S206). Here, the distance constraint calculation unit 122 calculates the distance constraint line by projecting the linear equation in the three-dimensional space onto the image space by performing projection conversion on the linear equation calculated in step S205. Here, the projection conversion uses, for example, perspective projection conversion. FIG. 15 shows an example in which a distant view constraint line L2 that is a distance constraint line obtained by projecting the straight line equation k2 onto the image space and a near view constraint line L3 that is a distance constraint line obtained by projecting the straight line equation k3 onto the image space are calculated. It is shown. Note that the distance constraint lines (distant view constraint line L2, near view constraint line L3) are lines on the left-eye image PL that indicate the boundary between the non-corresponding distance area and the corresponding distance area.

  When the parallax constraint calculation unit 121 calculates the parallax constraint line L1 and the distance constraint calculation unit 122 calculates the distance constraint line, the identification information generation unit 120 generates identification information (step S207), and thereafter, identification information generation processing Exit. The identification information only needs to be information for identifying the measurement target region and the non-measurement target region. For example, the identification information is a set of information on each constraint line as illustrated in FIG.

  After generating the identification information, when starting the identification information utilization process, the information processing apparatus 100 first acquires setting information as shown in FIG. 17 (step S301). The setting information is information relating to the setting regarding how to use the identification information. Hereinafter, a case will be described as an example where the setting information is information regarding whether or not to perform display processing for displaying the measurement target region and the non-measurement target region in a distinguishable manner using the identification information.

  When the setting information is acquired, the information processing apparatus 100 determines whether or not to display the measurement target region and the non-measurement target region based on the setting information acquired in step S301 (step S302).

  If it is determined to display in step S302, the information processing apparatus 100 uses the identification information to display a captured image on the display 107 so that the measurement target region and the non-measurement target region can be identified (step S303). FIG. 18 shows an example in which the left-eye image PL is displayed so that the measurement target area A1 and the non-measurement target area A2 can be identified. Thereafter, the information processing apparatus 100 determines whether or not an instruction to start reinforcing bar measurement is input from the user (step S304).

  When it determines with not displaying at step S302, or when it determines with the start instruction | indication having been input by step S304, the information processing apparatus 100 performs reinforcement measurement using identification information (step S305), and, after that, The identification information use process is terminated. In step S305, reinforcing bar measurement is performed using information on the measurement target region based on at least the captured image and the identification information. Note that the information on the measurement target region may be information on a measurement target region portion in the photographed image, or information on a measurement target region portion in the three-dimensional data generated from the photographed image.

  As described above, according to the information processing apparatus 100, it is possible to specify the measurement target region before performing the reinforcing bar measurement processing. For this reason, execution of useless reinforcing bar measurement processing can be avoided for the reason described above. Further, the time required for the reinforcing bar measurement process can be shortened.

[Second Embodiment]
FIG. 19 is a diagram illustrating a configuration of the bar arrangement inspection support system 2 according to the present embodiment. The bar arrangement inspection support system 2 includes an information processing device 200 as shown in FIG. The information processing apparatus 200 is, for example, a tablet computer having a stereo shooting function.

  FIG. 20 is a diagram illustrating a functional configuration of the information processing apparatus 200. The information processing apparatus 200 has the functions of both the photographing apparatus 10 and the information processing apparatus 100 shown in FIG. Specifically, as shown in FIG. 20, the functional configuration of the information processing apparatus 200 includes a photographing unit 210 that captures a stereo image and outputs the stereo image to the planar information acquisition unit 110. Is different.

  The information processing apparatus 200 according to the present embodiment can achieve the same effects as the information processing apparatus 100. That is, according to the information processing apparatus 200, it is possible to specify the measurement target region before performing the reinforcing bar measurement process. As a result, it is possible to avoid executing the unnecessary reinforcing bar measurement process and the time required for the reinforcing bar measurement process. Can be shortened.

[Third Embodiment]
FIG. 21 is a diagram illustrating a configuration of the bar arrangement inspection support system 3 according to the present embodiment. The bar arrangement inspection support system 3 includes an imaging device 10, an information processing device 300, and an information processing device 400. Each of the information processing apparatus 300 and the information processing apparatus 400 is, for example, a standard computer.

  As shown in FIG. 21, the digital camera 10 and the information processing apparatus 300 are used at the same location (that is, the site) as the subject Rs, whereas the information processing apparatus 400 is located at a location (for example, an office) different from the subject Rs. And data centers).

  FIG. 22 is a diagram illustrating a functional configuration of the information processing apparatus 300. As illustrated in FIG. 22, the information processing apparatus 300 is different from the information processing apparatus 100 according to the first embodiment in that the measurement unit 130 is not provided. Other points are the same as those of the information processing apparatus 100. On the other hand, the information processing apparatus 400 has a function corresponding to the measurement unit 130.

  In the bar arrangement inspection support system 3 according to the present embodiment, the information processing apparatus 300 generates identification information on the site, and displays the measurement target area and the non-measurement target area on the display 107 based on the identification information. Thereby, the user can confirm whether the area | region sufficient to perform a reinforcing bar measurement process was image | photographed on the spot. For this reason, when a sufficient area is not photographed, re-imaging can be performed on the spot. Thereafter, the reinforcing bar measurement processing is performed by the information processing apparatus 400 set at a location different from the site.

  Also with the information processing apparatus 300 according to the present embodiment, the same effects as those of the information processing apparatus 100 and the information processing apparatus 200 can be obtained. That is, according to the information processing apparatus 300, it is possible to identify the measurement target region before performing the reinforcing bar measurement process, and as a result, avoiding unnecessary execution of the reinforcing bar measurement process in the information processing apparatus 400, The time required for the reinforcing bar measurement process in the information processing apparatus 400 can be shortened.

  Further, in the bar arrangement inspection support system 3 according to the present embodiment, the reinforcing bar measurement processing, which is a relatively heavy processing for the computer, can be performed by a device different from the information processing device 300, and therefore used in the field. The information processing apparatus 300 to be configured can be configured with a computer having a relatively low specification.

  The embodiments described above show specific examples for facilitating understanding of the invention, and the embodiments of the present invention are not limited to these. The information processing apparatus, the information processing method, and the program can be variously modified and changed without departing from the scope of the claims.

  In the above-described embodiment, the example in which the identification information generation unit 120 includes both the parallax constraint calculation unit 121 and the distance constraint calculation unit 122 has been described. However, the identification information generation unit 120 includes the parallax constraint calculation unit 121 and the distance constraint calculation. Only one of the portions 122 may be included.

  In the above-described embodiment, the example in which the parallax constraint calculation unit 121 calculates the parallax at two points in the image and calculates the parallax constraint line has been described. However, the parallax constraint calculation unit 121 calculates the parallax at one point in the image. A parallax constraint line may be calculated. When the requirements regarding the identification accuracy of the measurement target region and the non-measurement target region are relatively loose, the parallax constraint line may be calculated using the parallax at one point representing the image. For example, it may be calculated as a vertical line passing through the one point.

  In the above-described embodiment, the distance constraint calculation unit 122 calculates both the distant view constraint line L2 and the foreground constraint line L3. However, the distance constraint calculation unit 122 performs the distant view constraint line L2 and the foreground constraint line L3. Only one of L3 may be calculated.

  In the above-described embodiment, the example in which the plane information acquisition unit 110 includes the stereo image acquisition unit 111 and the plane information generation unit 112 has been described. However, the plane information acquisition unit 110 generates plane information based on the stereo image. Instead, for example, an autofocus device attached to the imaging device 10, an autofocus device with a known positional relationship with the imaging device 10, or a laser measuring device with a known positional relationship with the imaging device 10, etc. The plane information may be generated based on the distance information to the subject acquired by the dimension measuring device. When an autofocus device is used, a plane may be estimated based on distance information at a plurality of locations in the image, or a plane with a constant distance may be estimated from distance information at one location in the image. The plane information acquisition unit 110 may acquire plane information calculated by an external device and output the plane information to the identification information generation unit 120.

  In the above-described embodiment, the information processing apparatus includes the display control unit 140 and the display unit 150. However, the information processing apparatus only needs to generate identification information. It does not have to be provided. The information processing apparatus may include the display control unit 140, and the display control unit 140 may perform display control on the display unit that is an external device.

1, 2, 3 ... Reinforcement inspection support system, 10 ... Imaging device, 11, 12 ... Sensor, 100, 200, 300, 400 ... Information processing device, 101 ... Processor, 102 ... Memory, 103 ... Storage, 104 ... Interface device, 105 ... Portable recording medium drive device, 106 ... Portable recording medium, 107 ... Display, 108 ... Bus, 110: Plane information acquisition unit, 111: Stereo image acquisition unit, 112 ... Plane information generation unit, 120 ... Identification information generation unit, 121 ... Parallax constraint calculation unit, 122 ... Distance Constraint calculation unit, 130 ... measurement unit, 140 ... display control unit, 150 ... display unit, 210 ... imaging unit, A1 ... measurement target region, A2 ... non-measurement region, Rs ... Subject, SA1 SA2 ... shooting area, PL ... left eye image, PR ... right eye image, tp ... target plane, g ... width, z0 ... distance, f ... focal length, p, p1 , P2 ... parallax, bl ... baseline length, C1, C2, CE1, CE2, E1, E2 ... position, L1 ... parallax constraint line, L2 ... distant view constraint line, L3 ... Foreground restriction line, k2, k3 ... straight line

Claims (9)

An information processing apparatus that supports a bar arrangement inspection of a plurality of reinforcing bars,
A plane information acquisition unit that acquires plane information for specifying a position in a three-dimensional space of a plane constituted by the plurality of reinforcing bars, with respect to an imaging device that images the plurality of reinforcing bars;
An area on a captured image that is an image of the plurality of reinforcing bars imaged by the imaging device based on at least the planar information acquired by the planar information acquisition unit, and is used for reinforcing bar measurement in the bar arrangement inspection And an identification information generation unit that generates identification information for identifying a measurement target region and a non-measurement target region that is a region on the captured image that is not used for the reinforcing bar measurement. A characteristic information processing apparatus. The information processing apparatus according to claim 1, further comprising:
A display control unit that displays the captured image on a display unit so that the measurement target region and the non-measurement target region on the captured image can be identified based on at least the captured image and the identification information. A characteristic information processing apparatus. The information processing apparatus according to claim 1, further comprising:
An information processing apparatus comprising: a measurement unit that measures the reinforcing bars for the plurality of reinforcing bars based on at least the captured image and the identification information. The information processing apparatus according to any one of claims 1 to 3,
The identification information generation unit defines an area on the photographed image corresponding to an area on the plane whose distance from the imaging apparatus specified based on at least the plane information is outside a predetermined range. An information processing apparatus that generates the identification information identified as: The information processing apparatus according to any one of claims 1 to 4,
The plane information acquisition unit
A stereo image acquisition unit for acquiring a stereo image that is the captured image;
An information processing apparatus comprising: a plane information generation unit that generates the plane information based on at least the stereo image. The information processing apparatus according to claim 5,
The identification information generation unit is specified based on at least specification information of the imaging device that captures the stereo image and the plane information, and corresponds to an area on the plane that is not captured redundantly in the stereo image. An information processing apparatus that generates the identification information that identifies a region on a stereo image as the non-measurement target region. The information processing apparatus according to claim 6,
The specification information of the photographing device is
A baseline length of the imaging device;
The focal length of the imaging device;
An information processing apparatus comprising: a pixel pitch of the photographing apparatus. An information processing method for supporting a bar arrangement inspection of a plurality of reinforcing bars,
It is a position based on an imaging device for photographing the plurality of reinforcing bars, and acquires plane information for specifying a position in a three-dimensional space of a plane composed of the plurality of reinforcing bars,
A measurement target region that is a region on a captured image that is an image of the plurality of reinforcing bars imaged by the imaging device based on at least the plane information, and is a region that is used for reinforcing bar measurement in the reinforcement inspection; and An information processing method for generating identification information for identifying a region on a photographed image and a region not to be measured which is a region not used for the reinforcing bar measurement. In an information processing device that supports rebar inspection of a plurality of rebars,
It is a position based on an imaging device for photographing the plurality of reinforcing bars, and acquires plane information for specifying a position in a three-dimensional space of a plane composed of the plurality of reinforcing bars,
A measurement target region that is a region on a captured image that is an image of the plurality of reinforcing bars imaged by the imaging device based on at least the plane information and is used for reinforcing bar measurement in the reinforcement inspection; and A program that executes processing for generating identification information that identifies a region on a captured image and a region not to be measured that is a region that is not used for the reinforcing bar measurement.