JP2022069153A - Measuring device and measuring program - Google Patents

Abstract

To realize a measuring device capable of confirming measurement accuracy information by a user.SOLUTION: A measuring device (100) includes: a measuring unit (1031) for measuring a measurement target based on an image in which a reinforcing bar to be measured is captured by an imaging unit (101); and a control unit (103) for outputting measurement accuracy information related to measurement accuracy in association with the image.SELECTED DRAWING: Figure 1

Description

The present invention relates to a measuring device and a measuring program.

Currently, the development of a measuring device that calculates the three-dimensional position of the measurement target by performing image processing on a digital image obtained by capturing the measurement target is underway. A technique for applying such a measuring device to a bar arrangement inspection and measuring a reinforcing bar diameter, a reinforcing bar spacing, and the like is being studied.

For example, Patent Document 1 discloses an imaging device that acquires an image captured in a state of being in focus on a target reinforcing bar and calculates the diameter of the target reinforcing bar.

Japanese Unexamined Patent Publication No. 2017-3364

In order to accurately measure the reinforcing bar diameter and the reinforcing bar spacing, it is necessary that the captured image has sufficient resolution. Therefore, for example, imaging is performed in a state where various imaging conditions such as an imaging distance, an imaging range, a focal length, an image resolution, and a baseline length which is a distance between a plurality of imaging units are within a preset range.

However, depending on the state of the imaging device and changes in the surrounding environment, the above-mentioned imaging conditions may deviate and imaging may be performed under unintended imaging conditions. Therefore, there may be doubts about the reliability of the measurement results, and the measurement results may not be effectively utilized.

Therefore, one aspect of the present invention is to realize a measuring device and related techniques thereof in which doubts about the reliability of measurement results are unlikely to occur.

In order to solve the above problems, the measuring device according to one aspect of the present invention includes a measuring unit that measures the measurement target based on an image in which the reinforcing bar of the measurement target is captured by the imaging unit, and a measurement accuracy related to the measurement accuracy. It is characterized by including a control unit that outputs information in association with the image.

According to one aspect of the present invention, it is possible to realize a measuring device and related techniques thereof in which doubts about the reliability of measurement results are unlikely to occur.

It is a block diagram which shows an example of the structure of the measuring apparatus which concerns on Embodiment 1. FIG. It is a figure which shows an example of the object which has a known pattern. It is a figure which shows an example of the display of the measurement result. It is a figure which shows an example of the display of the measurement accuracy information. It is a figure which shows an example of the graph which shows the relationship between time and a baseline length. It is a figure which shows an example of the display of the measurement accuracy information. It is a flowchart which shows an example of the flow of the control process of the measuring apparatus which concerns on Embodiment 1. FIG. It is a block diagram which shows an example of the structure of the measuring apparatus which concerns on Embodiment 2. FIG. It is a figure which shows an example of the display of the measurement accuracy information. It is a flowchart which shows an example of the flow of the control process of the measuring apparatus which concerns on Embodiment 2. It is a block diagram which shows an example of the structure of the measuring apparatus which concerns on Embodiment 3. It is a figure which shows an example of the display of the measurement accuracy information. It is a flowchart which shows an example of the flow of the control process of the measuring apparatus which concerns on Embodiment 3.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The expressions in each figure are exaggerated for easy understanding and may differ from the actual ones.

<Embodiment 1>
[Measuring device 100]
FIG. 1 is a block diagram showing an example of the configuration of the measuring device 100 according to the first embodiment. The measuring device 100 includes an imaging unit 101, an input unit 102, a control unit 103, a notification unit (progress notification unit and measurement accuracy notification unit) 104, and a storage unit 105.

[Image pickup unit 101]
The image pickup unit 101 takes an image of the reinforcing bar to be measured.

As shown in FIG. 1, the image pickup unit 101 includes a first image pickup unit (imaging unit) 1011 and a second image pickup unit (imaging unit) 1012.

(1st image pickup unit 1011 and 2nd image pickup unit 1012)
The first image pickup unit 1011 and the second image pickup unit 1012 are composed of a solid-state image pickup device, a lens, and the like. Examples of the solid-state image sensor include a CCD (Charge Coupled Device) and a CMOS (Complementary Metal Oxide Semiconductor) sensor.

The first image pickup unit 1011 and the second image pickup unit 1012 acquire an image in which the reinforcing bar to be measured is captured at preset exposure and focus positions.

[Input unit 102]
The input unit 102 inputs preset values such as a preset number of pixels, a focal length, a baseline length, and a measurement error. The input unit 102 is composed of a mouse, a touch panel of the display unit 1041, or the like.

[Control unit 103]
The control unit 103 performs image processing, measurement processing, and the like to control the measurement device 100.

The control unit 103 measures the reinforcing bar of the subject of the image captured by the image pickup unit 101 by the measurement unit 1031 and outputs the measurement result to at least one of the notification unit 104 and the storage unit 105. Further, the control unit 103 outputs the measurement accuracy information regarding the measurement accuracy to at least one of the display unit 1041 and the storage unit 105 in the notification unit 104 in association with the image.

Here, as the measurement result, the average value of the reinforcing bar diameter, the reinforcing bar spacing, and the joint length in the measurement range can be mentioned. Further, the measurement accuracy information is information related to measurement accuracy, and the measurement accuracy information is information related to at least one of an external parameter regarding the arrangement of the imaging unit 101, an internal parameter regarding the characteristics of the imaging unit 101, and environmental information at the time of imaging. including.

Examples of the internal parameters of the image pickup unit 101 include the focal length of the image pickup unit 101 and lens distortion. Examples of the external parameters of the image pickup unit 101 include a baseline length and an image pickup direction. Examples of the environmental information at the time of imaging include an imaging distance and an exposure time.

The control unit 103 may display a corrected image of the image captured by the image pickup unit 101 on the display unit 1041 based on parameters such as internal parameters and external parameters of the image pickup unit 101. This makes it possible to display the image more preferably.

As shown in FIG. 1, the control unit 103 includes a measurement unit 1031.

(Measurement unit 1031)
The measuring unit 1031 measures the reinforcing bar based on the image of the reinforcing bar to be measured by the imaging unit 101.

The measurement unit 1031 performs measurement processing by software processing or hardware processing.

Software processing is performed by a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), or the like.

The hardware processing is performed by an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

[Notification unit 104]
The notification unit 104 notifies the image acquired by the imaging unit 101 and the measurement result acquired by the measurement unit 1031.

As shown in FIG. 1, the notification unit 104 includes a display unit 1041 and a voice output unit 1042.

(Display unit 1041)
The display unit 1041 displays the measurement result. Further, the display unit 1041 displays the measurement accuracy information in association with the image. The display unit 1041 is composed of a display such as a liquid crystal display or an organic EL (Electroluminescence) display.

(Audio output unit 1042)
The voice output unit 1042 outputs the notification information by voice. The voice output unit 1042 may output the measurement result and the measurement accuracy information by voice. The audio output unit 1042 is composed of a speaker, headphones, earphones, or the like.

[Storage 105]
The storage unit 105 stores an image output from the control unit 103, a measurement result, measurement accuracy information, a preset value input to the control unit 103 via the input unit 102, and the like. The storage unit 105 includes a recording medium such as a flash memory and a magnetic disk.

[Processing by measuring device 100]
Hereinafter, the processing by the measuring device 100 will be specifically described.

[Measurement accuracy calculation process]
(Imaging process)
The first image pickup unit 1011 and the second image pickup unit 1012 in the image pickup unit 101 of the measuring device 100 image an object having a known pattern for calculating the parameters of the image pickup unit 101 from different directions.

FIG. 2 is a diagram showing an example of an object having a known pattern for calculating the parameters of the imaging unit 101. As shown in FIG. 2, examples of an object having a known pattern include a calibration board having a repeating pattern of figures of known sizes such as squares, rhombuses, and circles.

(Parameter calculation process)
The control unit 103 of the measuring device 100 calculates the internal parameters and the external parameters of the imaging unit 101 as measurement accuracy based on the image of the pattern of the object having the known pattern imaged from different directions by the imaging unit 101. The control unit 103 may incorporate internal parameters and external parameters, or may be stored in the storage unit 105 and read from the storage unit 105 when the measurement process is executed.

[Measurement processing]
(Imaging process)
The first imaging unit 1011 and the second imaging unit 1012 in the imaging unit 101 of the measuring device 100 image the reinforcing bar to be measured.

(Image processing)
The control unit 103 calculates the parallax based on the image captured by the image pickup unit 101, and calculates the three-dimensional information of the reinforcing bar to be measured, which is the subject in the image. The parallax is the amount of deviation of the subject between the two images captured by the first image pickup unit 1011 and the second image pickup unit 1012. The control unit 103 calculates the parallax by block matching or the like. Block matching is a method in which a reference window is set in a pixel of interest of a reference image, a reference window is sequentially set in a reference image, and the similarity or difference between the reference window and the pixels of the reference window is evaluated. For evaluation, SAD (Sum of Absolute Assessment) or SSD (Sum of Squared Difference) or the like is used.

The control unit 103 has an imaging distance Z from the imaging unit 101 (first imaging unit 1011 and a second imaging unit 1012) to the subject, a parallax D, a focal length f of the imaging unit 101, and a distance between the two imaging units. The parallax D is calculated based on the relational expression D = f × B / Z with the focal length B indicating. Further, the control unit 103 is based on the relational expressions X = x × Z / f and Y = y × Z / f between the coordinates (x, y) on the image and the three-dimensional coordinates (X, Y, Z) of the subject. , Calculate the 3D coordinates of the subject.

Here, in the above example, the control unit 103 calculates the three-dimensional information of the subject from the images acquired by the two image pickup units. However, in the present embodiment, the control unit 103 may calculate the three-dimensional coordinates of the subject from three or more image pickup units, or may acquire the three-dimensional coordinates by TOF (Time Of Flight).

(Reinforcing bar diameter and reinforcing bar spacing calculation processing)
The measurement unit 1031 in the control unit 103 performs calculation processing of the reinforcing bar diameter and the reinforcing bar spacing based on the image captured by the imaging unit 101.

Specifically, the measurement unit 1031 detects the edge (reinforcing bar edge) of the reinforcing bar to be measured, which is the subject in the image. The measuring unit 1031 detects a straight line group of the reinforcing bar edges by Hough transforming the detected reinforcing bar edges.

The measuring unit 1031 determines the combination of the reinforcing bar edges based on the combination of the inclination and the position of the linear group of the plurality of detected reinforcing bar edges. The measuring unit 1031 calculates the distance between the three-dimensional straight lines of two reinforcing bar edges existing along each other among the combinations of reinforcing bar edges as the reinforcing bar diameter. In this case, the control unit 103 can determine whether or not the two reinforcing bar edges are of the same reinforcing bar by using the parallax. For example, if the parallax of the pixels between the edges of the reinforcing bars is a value continuous with the parallax of the adjacent pixels and is within a predetermined range, the control unit 103 determines that the reinforcing bars are the same. do.
The measuring unit 1031 may calculate the three-dimensional coordinates of the points around each of the two reinforcing bar edges, and calculate the distance between the points as the reinforcing bar diameter.

The control unit 103 may output a reinforcing bar standard corresponding to the calculated reinforcing bar diameter as a measurement result. Further, the control unit 103 may calculate the axis passing through the center of the above-mentioned two reinforcing bar edges as the central axis of the reinforcing bar, and calculate the distance between the central axes of the adjacent reinforcing bars as the reinforcing bar spacing. In this case, the control unit 103 may calculate the average value of the reinforcing bar intervals for each of the horizontal reinforcing bars and the vertical reinforcing bars.

[Output processing]
(Measurement result output processing)
The control unit 103 outputs the measurement result to at least one of the notification unit 104 and the storage unit 105. Hereinafter, an example of displaying the measurement result will be described with reference to FIG.

FIG. 3 is a diagram showing an example of displaying the measurement result. As shown in FIG. 3, the control unit 103 displays a screen 300 including an image 301, a measurement result 306, a reinforcing bar display selection area 307, a measurement range display selection area 308, and a screen switching area 309 on the display unit 1041. You may let me.

In FIG. 3, the image 301 captures images of a vertical reinforcing bar (reinforcing bar) 302 extending in the vertical direction (vertical direction) and a horizontal reinforcing bar (reinforcing bar) 303 extending in the horizontal direction (horizontal direction) with respect to the imaging unit 101. The measurement result 304 and the measurement range 305 are superimposed and displayed. In this way, the control unit 103 may display the measurement result 304 and the measurement range 305 on the display unit 1041 so as to be superimposed on the image 301. Thereby, the measurement result can be displayed more preferably.

In FIG. 3, in addition to the measurement result 304 on the image 301, the measurement result 306 is displayed on the right side of the image 301. As shown in FIG. 3, the measurement result 304 includes the reinforcing bar diameter 304a and the reinforcing bar spacing 304b of the vertical reinforcing bar 302, and the reinforcing bar diameter 304c and the reinforcing bar spacing 304d of the horizontal reinforcing bar 303. Further, the measurement result includes the reinforcing bar diameter 306a and the reinforcing bar spacing 306b of the vertical reinforcing bar 302, and the reinforcing bar diameter 306c and the reinforcing bar spacing 306d of the horizontal reinforcing bar 303. Further, the reinforcing bar diameter 304a and the reinforcing bar diameter 306a of the vertical reinforcing bar 302, the reinforcing bar spacing 304b and the reinforcing bar spacing 306b of the vertical reinforcing bar 302, the reinforcing bar diameter 304c and the reinforcing bar diameter 306c of the horizontal reinforcing bar 303, and the reinforcing bar spacing 304d and the reinforcing bar spacing 306d of the horizontal reinforcing bar 303. Correspond to each.

As described above, when a plurality of reinforcing bars to be measured are present in each of the vertical direction and the horizontal direction, the control unit 103 separately displays the vertical measurement result and the horizontal measurement result on the display unit 1041. It may be displayed. Thereby, the measurement result can be displayed more preferably.

The reinforcing bar display selection area 307 is an area for receiving a selection from the user via the input unit 102 whether or not to display the vertical reinforcing bar 302 and the horizontal reinforcing bar 303 on the image 301. The control unit 103 changes the display mode of the vertical reinforcing bars 302 and the horizontal reinforcing bars 303 on the image 301 according to the user's selection. This makes it possible to display the image more preferably.

The measurement range display selection area 308 is an area that accepts a user's selection as to whether or not to display the measurement range 305 on the image 301 via the input unit 102. The control unit 103 changes the display mode of the measurement range 305 on the image 301 according to the user's selection. This makes it possible to display the image more preferably.

The screen switching area 309 is an area for receiving switching from the screen 300 to another screen from the user via the input unit 102. When the control unit 103 accepts the user's selection, the screen 300 may be closed and the display unit 1041 may display a screen on which the measurement accuracy information is displayed together with an image such as the screen 400 of FIG. 4 described later. .. As a result, the screen can be switched more preferably.

The control unit 103 may display the measurement result as a text file on the display unit 1041.
(Measurement accuracy information output processing)

The control unit 103 outputs measurement accuracy information related to measurement accuracy such as parameters of the image pickup unit 101 to at least one of the display unit 1041 and the storage unit 105 in association with the image.

Here, outputting the measurement accuracy information in association with the image is not limited to displaying the measurement accuracy information and the image on the same screen or storing the measurement accuracy information in the same storage unit 105.

For example, one is output to the display unit 1041 and the other is output to the storage unit 105, the measurement accuracy information and the image are displayed on different screens, and the measurement accuracy information and the image are output to different storage units. It also includes displaying measurement accuracy information and images on the same screen at different times or in a switchable manner.

As a result, the user can recognize the measurement accuracy information in association with the image, so that the reliability of the measurement result can be accurately grasped, and the reliability of the measurement result is less likely to be doubted. In particular, when the measurement accuracy information and the image are displayed on the same screen, it is preferable because it becomes easier for the user to accurately grasp the reliability of the measurement result.

As described above, when the control unit 103 outputs the measurement result, the control unit 103 outputs the measurement accuracy information in association with the image. Hereinafter, an example of displaying the measurement accuracy information will be described with reference to FIG.

FIG. 4 is a diagram showing an example of displaying measurement accuracy information. As shown in FIG. 4, the control unit 103 may display the screen 400 including the image 301X and the measurement accuracy information 401 on the display unit 1041 instead of the image 301 and the measurement result 306.

In FIG. 4, the measurement result 304 is not superimposed and displayed on the image 301. Further, the measurement accuracy information 401 includes internal parameters and external parameters of the first imaging unit 1011 and the second imaging unit 1012, as well as the parameter calculation date and time. In this way, the control unit 103 may display the parameter calculation date and time on the display unit 1041 in addition to the parameters of the image pickup unit 101. As a result, the user can more accurately grasp the reliability of the measurement result.

Here, the number of pixels of the first imaging unit 1011 and the second imaging unit 1012 affects the resolution when calculating the reinforcing bar edge and the parallax. Further, the focal lengths of the first imaging unit 1011 and the second imaging unit 1012 affect the measurement range. For example, when the number of pixels is less than the preset number of pixels input to the control unit 103 via the input unit 102 and the focal length is shorter than the preset focal length, the number of pixels per unit length is Less. Therefore, the control unit 103 determines that the measurement accuracy is low. As described above, if the number of pixels is too small or the focal length is too short, the measurement accuracy is lowered.

Therefore, if the display unit 1041 displays the number of pixels and the focal length, the user can recognize whether or not the measurement accuracy is high, as in the determination of the control unit 103.

Further, the baseline lengths of the first imaging unit 1011 and the second imaging unit 1012 affect the measurement accuracy information. Hereinafter, the influence of the baseline lengths of the first imaging unit 1011 and the second imaging unit 1012 on the measurement accuracy information will be described with reference to FIG.

FIG. 5 is a diagram showing an example of a graph showing the relationship between time and baseline length. For example, as in the baseline length (external parameter) 501 shown in FIG. 5, if the baseline length is smaller than the first threshold value 502, which is the lower limit of the baseline length set in advance, the measurement error is large, so that the control unit 103 Determines that the measurement accuracy is low. When the baseline length is larger than the second threshold value 504, which is the upper limit of the preset baseline length, such as the baseline length 503, the shapes of the subjects captured by the two imaging units on the image are significantly different. Since the parallax calculation accuracy is low, the control unit 103 determines that the measurement accuracy is low. As described above, if the baseline length is too small or too large, the measurement accuracy is lowered. Therefore, if the baseline length is displayed on the display unit 1041, the user can recognize whether or not the measurement accuracy is high, as in the determination of the control unit 103.

Further, it is preferable that the imaging distance at the time of measuring the reinforcing bar, which is the measurement target, is about the same as the preset imaging distance such as the imaging distance at the time of calculating the parameters of the imaging unit 101. The control unit 103 determines that the measurement accuracy is low because the measurement error is large if the imaging distance is significantly different, such as when the imaging distance deviates from the preset imaging distance threshold value.

In this way, when at least one of the number of pixels, focal length, baseline length and imaging distance at the time of reinforcing bar measurement is significantly different from the number of pixels, focal length, baseline length and imaging distance at the time of parameter calculation, the user can measure accuracy. Can be recognized as not sufficient.

[Control processing of measuring device 100]
Next, the control process (control method) of the measuring device 100 according to the first embodiment will be described with reference to FIG. 7. FIG. 7 is a flowchart showing an example of the flow of control processing of the measuring device according to the first embodiment.

Step S101: The measurement unit 1031 of the measurement device 100 measures the measurement target based on the image in which the reinforcing bar of the measurement target is captured by the image pickup unit 101 of the measurement device 100.

Step S102: The control unit 103 of the measurement device 100 outputs the measurement accuracy information regarding the measurement accuracy to at least one of the notification unit 104 and the storage unit 105 of the measurement device 100 in association with the image.

[Modification example]
The measuring device 100 may be configured as follows.

(Modification 1)
In FIG. 4, when outputting the measurement result, the control unit 103 outputs the measurement accuracy information including a part of the calculated parameters in association with the image.

However, in the present embodiment, the control unit 103 displays the measurement accuracy information including all the calculated parameters or a part of the parameters different from the parameters of FIG. 4 in the display unit 1041 or stores the measurement accuracy information in the storage unit 105. You may. This allows the user to confirm the measurement accuracy information including the desired parameters.

(Modification 2)
In FIG. 4, the control unit 103 displays only the measurement accuracy information and the image, and the measurement result is displayed on another screen so as to be switchable. However, in the present embodiment, the control unit 103 may output the measurement accuracy information in association with the image, and may not output the measurement result.

Further, in the present embodiment, the control unit 103 may display the measurement result and the measurement accuracy information on the same screen. For example, the control unit 103 may display the image 301 of FIG. 3 in which the measurement result 304 is superimposed on the image 301X on the display unit 1041 instead of the image 301X of FIGS. 4 and 6. This allows the user to more clearly confirm the correspondence between the measurement accuracy and the measurement result.

(Modification 3)
In FIG. 4, the control unit 103 displays the measurement accuracy information on the right side of the image 301X. However, in the present embodiment, the control unit 103 may display the measurement accuracy information at an arbitrary position on the screen, such as the upper side, the lower side, and the left side of the image. Further, the control unit 103 may associate the measurement accuracy information with the image by describing the measurement accuracy information in the tag of the image. This eliminates the need for a space for displaying the measurement accuracy information, so that a larger image can be displayed on the display unit 1041.

(Modification example 4)
The control unit 103 may output measurement accuracy information including a measurement error calculated based on the number of pixels, the focal length, and the imaging distance.

For example, the control unit 103 calculates the length per pixel in the vertical and horizontal directions based on the number of pixels, the focal length, and the imaging distance. The control unit 103 calculates the value when the length per pixel in the vertical direction and the horizontal direction deviates by ± 0.5 pixel as a measurement error. In other words, the control unit 103 divides the length per pixel in the vertical direction of the measurement range 305 of the image 301X and the length per pixel in the horizontal direction according to the resolution, respectively, in the vertical direction and Calculated as a measurement error in the horizontal direction.

Further, the control unit 103 calculates the length per pixel in the imaging direction (depth direction). The control unit 103 calculates the value when the length per pixel in the depth direction deviates by ± 0.5 pixels as the measurement error in the depth direction. In other words, the control unit 103 calculates the value obtained by converting the parallax value into a distance as a measurement error in the depth direction.

The control unit 103 determines that the measurement accuracy is low when at least one of the measurement errors in the vertical direction, the horizontal direction, and the depth direction is higher than the preset measurement error, and in other cases, the measurement accuracy is low. Is determined to be high.

For example, the control unit 103 may output measurement accuracy information including a measurement error as shown in FIG. FIG. 6 is a diagram showing an example of displaying measurement accuracy information. As shown in FIG. 6, the control unit 103 causes the display unit 1041 to display the screen 600 including the measurement accuracy information 401X instead of the measurement accuracy information 401 of FIG.

In FIG. 6, the measurement accuracy information 401X uses the parameters of the imaging unit 101, the external parameters, and the parameter calculation date and time, instead of the measurement error in the vertical direction, the measurement error in the horizontal direction, and the measurement error in the depth direction calculated by the above method. Includes measurement accuracy calculation date and time.
Here, as is clear from the vector component in the depth direction of the image 301X in FIG. 6, the length per pixel in the depth direction is reflected in the image 301X only by the amount parallel to the plane of the image 301X. Therefore, the length per pixel in the depth direction is a very large value, unlike the length per pixel in the vertical direction and the horizontal direction.
As a result, as shown in FIG. 6, the measurement error in the depth direction becomes a large value for information as compared with the measurement error in the vertical direction and the horizontal direction. The value of the measurement error shown in FIG. 6 is only an example, and varies depending on the resolution of the imaging unit 101, the baseline length, and the like.

As described above, the control unit 103 may display the measurement accuracy information including at least one of the measurement errors on the display unit 1041 instead of the parameters of the image pickup unit 101. Further, the control unit 103 may display the measurement accuracy information including the measurement accuracy calculation date and time on the display unit 1041 instead of the parameter calculation date and time.

As described above, the control unit 103 may display the measurement accuracy information including the theoretically calculable measurement accuracy on the display unit 1041 or store it in the storage unit 105. As a result, even a user who is not familiar with image-based measurement and cannot estimate the measurement accuracy only by the number of pixels, the focal length, and the imaging distance shown in FIG. 4 can easily recognize the measurement accuracy.

(Modification 5)
When performing interpolation processing when performing image processing such as calculation of an imaging distance, the control unit 103 may include interpolation processing information indicating that the interpolation processing is being performed in the measurement accuracy information and output the interpolation processing information.

The image acquired by the TOF type image pickup unit 101 often has a smaller number of pixels than the color image. Therefore, when the imaging distance is calculated based on the image acquired by the TOF imaging unit 101, interpolation processing such as image processing and measurement processing may be performed in sub-pixel units.

In this way, when performing the interpolation processing, the control unit 103 may display the interpolation processing information on the display unit 1041 or store it in the storage unit 105. As a result, the user can more accurately grasp the reliability of the measurement result.

(Modification 6)
Further, the control unit 103 may perform image processing and measurement processing such as calculation of parallax and detection of reinforcing bar edges in units of one or less subpixels, and output measurement accuracy information regarding the subpixels.

When the image processing and the measurement processing are performed in sub-pixel units, the control unit 103 causes the display unit 1041 to display the measurement accuracy information indicating how many sub-pixel units the interpolation processing is performed, or stores the measurement accuracy information in the storage unit 105. You may do it. For example, the display unit 1041 may display that the interpolation processing is performed so that the number of vertical and horizontal pixels is increased by 10 times in units of 1/10 pixel sub-pixels. As a result, the user can more accurately grasp the reliability of the measurement result.

(Modification 7)
In FIG. 4, the control unit 103 causes the display unit 1041 to display the measurement accuracy information including the number of pixels of the image pickup unit 101. However, in the present embodiment, the control unit 103 may display the measurement accuracy information including the resolution of the image pickup unit 101 on the display unit 1041 in addition to the number of pixels of the image pickup unit 101.

In this case, the imaging unit 101 captures a chart on which white and black wedges are printed, and the control unit 103 determines the number of decompositions per unit length based on the contrast between the white and black wedges in the image. Calculated as the resolution of.

As a result, the user can confirm the measurement accuracy information regarding the accuracy of the lens of the imaging unit 101.

(Modification 8)
When a preset period has elapsed from the calculation date and time of the external parameter of the imaging unit 101, the control unit 103 may notify the notification unit 104 to that effect.

Specifically, the control unit 103 sets the valid period of the external parameter of the image pickup unit 101 in advance, and compares the date and time when the external parameter of the image pickup unit 101 was calculated most recently with the measurement date and time of the reinforcing bar. The control unit 103 confirms whether the measurement date and time of the reinforcing bar is within a preset period from the calculation date and time of the external parameter of the image pickup unit 101. When a preset period has elapsed from the calculation date and time of the external parameter of the image pickup unit 101, the control unit 103 causes the display unit 1041 to display the effect and outputs the audio output unit 1042 to that effect.

The external parameters may change as the measuring device 100 is transported or the period elapses, but according to the above configuration, it is suitable for the user whether or not the measurement accuracy information has changed. You can notify.

(Modification 9)
When the measurement accuracy is low or the measurement date and time is before or after a preset period, the control unit 103 may notify the notification unit 104 to that effect.

For example, when the number of pixels is less than the preset number of pixels, the control unit 103 determines that the measurement accuracy is low, and causes the notification unit 104 to notify that fact. When the focal length is shorter than the preset focal length, the control unit 103 determines that the measurement accuracy is low, and causes the notification unit 104 to notify that fact. When the number of pixels per unit length is small, the control unit 103 determines that the measurement accuracy is low, and causes the notification unit 104 to notify that fact. Further, the control unit 103 determines that the measurement accuracy is low when at least one of the measurement errors in the vertical direction, the horizontal direction, and the depth direction is higher than the preset measurement error, and the notification unit 104 informs the notification unit 104 to that effect. To be notified.

For example, when the measurement accuracy and the measurement date and time required for each user or site are determined, the control unit 103 compares the measurement accuracy and the measurement date and time with the preset measurement accuracy and the measurement date and time.

When it corresponds to at least one of insufficient measurement accuracy and inadequate measurement date and time, the control unit 103 causes the characters of the image displayed on the display unit 1041 to be displayed in red, or the voice output unit 1042 to output voice. Notify the user to that effect. As a result, the user can preferably confirm that the measurement accuracy is insufficient and the measurement date and time are inadequate.

(Modification 10)
In FIG. 4, the control unit 103 causes the display unit 1041 to display the measurement accuracy information including the parameter calculation date and time of the image pickup unit 101. Further, in FIG. 6, the control unit 103 displays the measurement accuracy information including the measurement date and time on the display unit 1041.

However, in the present embodiment, the control unit 103 displays measurement accuracy information including information on at least one of the measurement location, the measurer, and the measurement program on the display unit 1041 in addition to or instead of the parameter calculation date and time and the measurement date and time. You may let me. As a result, the user can more accurately grasp the reliability of the measurement result.

Information about the measurer includes the name of the measurer and the name of the company to which the measurer belongs. Information about the measurement program includes the manufacturer, date of manufacture and version of the measurement program.

(Modification 11)
In FIG. 4, the control unit 103 displays the measurement accuracy information as a numerical value on the display unit 1041, but the measurement accuracy information may be displayed on the display unit 1041 as a symbol.

In this case, for example, the control unit 103 causes the display unit 1041 to further display the corresponding preset evaluation criteria for each measurement accuracy information such as the internal parameter and the external parameter. Further, the control unit 103 assigns evaluation criteria for each of the internal parameters and the external parameters so as to be A, B, C ... In order from the highest one. As a result, the user can more intuitively recognize the measurement accuracy information.

<Embodiment 2>
The measuring device 100 according to the first embodiment calculates and outputs the measurement accuracy based on the parameters of the imaging unit 101 and the like. However, as in the measuring device 100X according to the present embodiment, the measurement accuracy may be calculated and output based on the image captured with the trial measurement target as the subject.

Hereinafter, the measuring device 100X according to the second embodiment will be described with reference to FIGS. 8 and 9. For convenience of explanation, the same reference numerals are given to the members having the same functions as the members described in the above-described embodiment, and the description thereof will not be repeated.

[Measuring device 100X]
FIG. 8 is a block diagram showing an example of the configuration of the measuring device 100X according to the second embodiment. As shown in FIG. 8, the measuring device 100X includes an imaging unit 101X, a control unit 103X, and a storage unit 105X instead of the imaging unit 101, the control unit 103, and the storage unit 105 in the first embodiment. There is. Except for these points, the measuring device 100X according to the second embodiment has the same configuration as the 100 according to the first embodiment.

[Image pickup unit 101X]
The image pickup unit 101X takes an image of an object having a known pattern as shown in FIG. 2 as a trial measurement target. As shown in FIG. 7, the image pickup unit 101X includes a first image pickup unit 1011X and a second image pickup unit 1012X.

(1st image pickup unit 1011X and 2nd image pickup unit 1012X)
The first image pickup unit 1011X and the second image pickup unit 1012X acquire an image in which an object having a known pattern is captured as a trial measurement target.

[Control unit 103X]
The control unit 103X further includes a trial measurement unit 1032 in addition to the measurement unit 1031.

The control unit 103X further outputs the trial measurement accuracy information indicating the measurement accuracy of the measurement result of the trial measurement target calculated by the trial measurement unit 1032. Specifically, the control unit 103 stores the trial measurement accuracy information in the storage unit 105X. The control unit 103 includes the trial measurement accuracy information stored in the storage unit 105X in the measurement accuracy information, and causes the display unit 1041 to display the measurement accuracy information including the trial measurement accuracy information in association with the image.

Further, the control unit 103X may further output at least one of the measurement date and time of the trial measurement target and the measurement location of the trial measurement target. Except for these points, the control unit 103X has the same configuration as the control unit 103 in the first embodiment.

(Trial measurement unit 1032)
The trial measurement unit 1032 measures the size of the pattern of an object having a known pattern that is the trial measurement target (for example, the grid point position and the grid point spacing), and calculates the measurement accuracy of the measurement result of the trial measurement target. Since the trial measurement target is an object having a known pattern, it is possible to suitably calculate the trial measurement accuracy information indicating the measurement accuracy of the measurement result of the trial measurement target.

As the object having a known pattern, an object having a repeating pattern of a square or a rhombus in FIG. 2 is preferable. This makes it possible to easily measure the grid point position and the grid point spacing.

The trial measurement unit 1032 compares the value of the measurement result of the trial measurement target with the value of the preset trial measurement target based on the image of the object having a known pattern, and measures the trial measurement target. The measurement accuracy of the result may be calculated. In this case, the trial measurement unit 1032 may calculate the trial measurement error, which is the comparison result of these values, as the measurement accuracy of the measurement result of the trial measurement target. Further, when the trial measurement error is higher than the preset trial measurement error, the trial measurement unit 1032 has a low measurement accuracy of the measurement result of the trial measurement target, and in other cases, the measurement accuracy of the measurement result of the trial measurement target. May be determined to be high.

The preset values of the trial measurement target include values based on the specifications of the trial measurement target and actual measurement values of the trial measurement target using instruments such as calipers and measures. The preset value of the trial measurement target is input to the control unit 103X via the input unit 102 and stored in the storage unit 105X.

In this way, by measuring an object with a known pattern as a trial measurement target and including the trial measurement accuracy information in the measurement accuracy information, the measurement accuracy information including the trial measurement accuracy information is displayed and stored together with the image. be able to. As a result, the user can more accurately grasp the reliability of the measurement result.

[Storage 105X]
The storage unit 105X is the trial measurement accuracy information indicating the measurement accuracy of the measurement result of the measurement result of the pattern size of the object having the known pattern which is the trial measurement target calculated by the trial measurement unit 1032, and the preset value of the trial measurement target. Memorize further. Except for this point, the storage unit 105X has the same configuration as the storage unit 105 in the first embodiment.

[Processing by measuring device 100X]

The control unit 103X measures the trial measurement target and outputs the measurement accuracy information including the trial measurement accuracy information. Hereinafter, an example of displaying the measurement accuracy information will be described with reference to FIG. 9.

FIG. 9 is a diagram showing an example of displaying measurement accuracy information. As shown in FIG. 9, the control unit 103X may display the screen 900 including the measurement accuracy information 401Y on the display unit 1041 instead of the measurement accuracy information 401X.

In FIG. 9, the measurement accuracy information 401Y includes the trial measurement accuracy information 901 and the trial measurement accuracy calculation date and time instead of the internal parameters and external parameters of the first imaging unit 1011 and the second imaging unit 1012 and the parameter calculation date and time.

Further, in FIG. 9, the trial measurement accuracy information 901 is displayed as a trial measurement error including an error in the grid point position and an error in the grid point spacing. The control unit 103X may display the trial measurement accuracy calculation date and time on the display unit 1041 in addition to the trial measurement accuracy information 901. As a result, the user can more accurately grasp the reliability of the measurement result.

[Control processing of measuring device 100X]
Hereinafter, the control process (control method) of the measuring device 100X will be described with reference to FIG. FIG. 10 is a flowchart showing an example of the control process of the measuring device 100X according to the second embodiment. Since step S203 of FIG. 10 is the same as step S101 of FIG. 7, the description thereof will be omitted here.

Step S201: The trial measurement unit 1032 of the measuring device 100X measures an object having a known pattern as a trial measurement target, and calculates the measurement accuracy of the measurement result of the trial measurement target.

Step S202: The control unit 103X of the measuring device 100X stores the trial measurement accuracy information indicating the measurement accuracy of the measurement result of the object having a known pattern as the trial measurement target in the storage unit 105X of the measuring device 100X.

Step S204: The control unit 103X includes the trial measurement accuracy information stored in the storage unit 105X in step S202 in the measurement accuracy information, and outputs the measurement accuracy information including the trial measurement accuracy information in association with the image.

In this embodiment, the measuring device 100X may perform the process of step S202 between steps S203 and S204.

[Modification example]
The measuring device 100X may be configured as follows.

(Modification 1)
The image pickup unit 101X may further image an object having a pattern different from the object having a known pattern used for calculating the parameters of the image pickup unit 101X. Further, the trial measurement unit 1032 may calculate the measurement accuracy of the measurement result of the trial measurement target based on the image in which the object having a different pattern, which is the trial measurement target, is captured.

As a result, the measurement of the measurement result of the trial measurement target is more accurate than the case of calculating the measurement accuracy of the measurement result of the trial measurement target based on the same image as the image used to calculate the parameter of the image pickup unit 101X. The accuracy can be calculated.

(Modification 2)
As shown in FIG. 2, when the pattern and size of an object having a known pattern are fixed, the control unit 103X previously stores the grid point position and the grid point spacing of the object in the image captured by the image pickup unit 101X. It may be stored in 105X.

In this case, the trial measurement unit 1032 in the control unit 103X calculates the grid point position and the grid point spacing of the object having the pattern to be the trial measurement target in the image, and compares it with the preset grid point position and the grid point spacing. .. The trial measurement unit 1032 calculates the trial measurement error of the comparison result as the measurement accuracy of the measurement result of the trial measurement target.

When the pattern and size of the object are not fixed, the control unit 103X accepts the input of the grid point position and the grid point spacing of the object from the user via the input unit 102, and accepts the selection of the pattern and size. Or something. The control unit 103X regards the size such as the grid point position and the grid point interval of the pattern of the received object as preset values of the trial measurement target and stores them in the storage unit 105X.

In this case, the trial measurement unit 1032 in the control unit 103X compares the calculated grid point position and grid point spacing of the object with the grid point position and grid point spacing of the object regarded as the preset value of the trial measurement target. do. The trial measurement unit 1032 calculates the trial measurement error such as the error of the grid point position and the error of the grid point interval as the measurement accuracy of the measurement result of the trial measurement target. As described above, according to the above method, the measurement accuracy of the measurement result of the trial measurement target can be suitably calculated even when the pattern and size of the object are not fixed.

(Modification 3)
When the reinforcing bar to be measured extends in a plurality of directions with respect to the image pickup unit 101X, the trial measurement unit 1032 may calculate the measurement accuracy of the measurement result of the trial measurement target for each of the plurality of directions.

For example, as shown in FIGS. 3, 4 and 6, when the reinforcing bar to be measured extends in the vertical direction and the horizontal direction, the trial measurement unit 1032 measures the measurement result of the trial measurement target in each of the vertical direction and the horizontal direction. Calculate the accuracy.

As a result, the measurement of the trial target is performed in an environment close to the actual measurement, so that the user can more preferably confirm the measurement accuracy information.

<Embodiment 3>
In the measuring device 100X according to the second embodiment, an object having a known pattern is measured as a trial measurement target, but like the measuring device 100Y according to the present embodiment, a reinforcing bar is used instead of an object having a known pattern. It may be measured as a trial measurement target.

Hereinafter, the measuring device 100Y according to the third embodiment will be described with reference to FIGS. 11 to 13. For convenience of explanation, the same reference numerals are given to the members having the same functions as the members described in the above-described embodiment, and the description thereof will not be repeated.

[Measuring device 100Y]
FIG. 11 is a block diagram showing an example of the configuration of the measuring device 100Y according to the third embodiment. As shown in FIG. 11, the measuring device 100Y includes an imaging unit 101Y, a control unit 103Y, and a storage unit 105Y instead of the imaging unit 101X, the control unit 103X, and the storage unit 105X in the second embodiment. There is. Except for these points, the measuring device 100Y according to the third embodiment has the same configuration as the 100X according to the second embodiment.

[Image pickup unit 101Y]
The image pickup unit 101Y takes an image of a reinforcing bar as a trial measurement target instead of an object having a known pattern. As shown in FIG. 11, the image pickup unit 101Y includes a first image pickup unit 1011Y and a second image pickup unit 1012Y.

(1st image pickup unit 1011Y and 2nd image pickup unit 1012Y)
The first image pickup unit 1011Y and the second image pickup unit 1012Y acquire an image in which an image in which a reinforcing bar is imaged is captured as an image in which a trial measurement target is imaged, instead of an image in which an object having a known pattern is imaged. do.

[Control unit 103Y]
The control unit 103Y includes a trial measurement unit 1032Y instead of the trial measurement unit 1032X in the second embodiment. Except for this point, the control unit 103Y has the same configuration as the control unit 103X in the second embodiment.

(Trial measurement unit 1032Y)
The trial measurement unit 1032Y measures the reinforcing bar that is the trial measurement target, and calculates the measurement accuracy of the measurement result of the trial measurement target. For example, the trial measurement unit 1032Y measures at least one of the reinforcing bar diameter and the reinforcing bar spacing, and calculates the measurement result of the trial measurement target.

The trial measurement unit 1032Y compares the measurement result of the trial measurement target with the preset value of the trial measurement target based on the image of the reinforcing bar to be the trial measurement target, and compares the measurement result of the trial measurement target with the measurement result of the trial measurement target. The measurement accuracy of may be calculated. In this case, the trial measurement unit 1032Y may calculate the trial measurement error such as the error of the reinforcing bar diameter and the error of the reinforcing bar spacing as the measurement accuracy of the measurement result of the trial measurement target. Further, in the trial measurement unit 1032Y, when the trial measurement error is higher than the preset trial measurement error, the measurement accuracy of the measurement result of the trial measurement target is low, and in other cases, the measurement accuracy of the measurement result of the trial measurement target is low. May be determined to be high.

The preset values of the trial measurement target include the values of the reinforcing bar diameter and the reinforcing bar spacing based on the specifications, and the values of the reinforcing bar diameter and the reinforcing bar spacing which are the measured values of the trial measurement target by an instrument such as a caliper and a measure. The preset value of the trial measurement target is input to the control unit 103Y via the input unit 102 and stored in the storage unit 105Y.

In this way, by targeting the reinforcing bar as a trial measurement target or measuring at least one of the reinforcing bar diameter and the reinforcing bar spacing, the measurement environment of the trial measurement target can be further changed to the actual reinforcing bar measurement environment than the object having a known pattern. Can be approached to. Therefore, the user and the measurement accuracy information can be more preferably confirmed by displaying or storing the trial measurement accuracy information including the trial measurement accuracy information for the reinforcing bar as the trial measurement target together with the image.

In addition, by comparing the measurement result of the trial measurement target with the preset value of the trial measurement target and calculating the measurement accuracy of the measurement result of the trial measurement target, the measurement accuracy of the measurement result of the trial measurement target can be obtained. It can be calculated suitably.

The reinforcing bar to be measured by trial measurement may have the same standard as the reinforcing bar to be measured in actual measurement. As a result, the size of the reinforcing bar of the trial measurement target can be made closer to the size of the reinforcing bar of the measurement target in the actual measurement, and the measurement environment of the trial measurement target can be made closer to the actual measurement environment of the reinforcing bar.

The reinforcing bar to be tested may be a reinforcing bar used in the field. As a result, the manufacturer and manufacturing conditions of the reinforcing bar to be measured in the trial measurement become the same as the manufacturer and manufacturing conditions of the reinforcing bar to be measured in the actual measurement. In addition, the reinforcing bars used in the field are affected by sunlight due to curved surfaces and irregularities, and rust and dirt are present. Therefore, even with this, the size of the reinforcing bar of the trial measurement target can be made closer to the size of the reinforcing bar of the measurement target in the actual measurement, and the measurement environment of the trial measurement target can be made closer to the actual measurement environment of the reinforcing bar. can.

If the reinforcing bar to be tested is a reinforcing bar used in the field, the trial measurement unit 1032Y may measure the trial measurement target within a preset period from the actual measurement, such as immediately before the actual measurement. good. As a result, the measurement environment of the trial measurement target including the lighting environment such as sunlight can be made closer to the actual measurement environment of the reinforcing bar.

[Storage 105Y]
The storage unit 105Y stores the measurement accuracy of the measurement result of the size of the reinforcing bar as the trial measurement accuracy information indicating the measurement accuracy of the measurement result of the trial measurement target instead of the object having the known pattern. Further, the storage unit 105Y stores the size of the reinforcing bar as a preset value of the trial measurement target instead of the size of the object having a known pattern. Except for these points, the storage unit 105Y has the same configuration as the storage unit 105X in the second embodiment.

[Processing by measuring device 100Y]

The control unit 103Y measures the trial measurement target and outputs the measurement accuracy information including the trial measurement accuracy information. Hereinafter, an example of displaying the measurement accuracy information will be described with reference to FIG. 12.

FIG. 12 is a diagram showing an example of displaying measurement accuracy information. As shown in FIG. 12, the control unit 103Y may display the screen 1200 including the measurement accuracy information 401Z on the display unit 1041 instead of the measurement accuracy information 401Y.

In FIG. 12, the measurement accuracy information 401Z includes the trial measurement accuracy information 901X instead of the trial measurement accuracy information 901. Further, in FIG. 12, the trial measurement accuracy information 901X is displayed as a trial measurement error including an error in the reinforcing bar diameter and an error in the reinforcing bar spacing. As a result, the user can more accurately grasp the reliability of the measurement result.

[Control processing of measuring device 100Y]
Hereinafter, the control process (control method) of the measuring device 100Y will be described with reference to FIG. FIG. 13 is a flowchart showing an example of the control process of the measuring device 100Y according to the third embodiment. Since step S303 in FIG. 13 is the same as step S101 in FIG. 7 and step S203 in FIG. 10, the description thereof will be omitted here.

Step S301: The trial measurement unit 1032Y of the measuring device 100Y measures the reinforcing bar which is the trial measurement target, and calculates the measurement accuracy of the measurement result of the trial measurement target.

Step S302: The control unit 103Y of the measuring device 100Y stores the trial measurement accuracy information indicating the measurement accuracy of the measurement result of the reinforcing bar to be the trial measurement in the storage unit 105Y of the measuring device 100Y.

Step S304: The control unit 103Y includes the trial measurement accuracy information stored in the storage unit 105Y in step S302 in the measurement accuracy information, and outputs the measurement accuracy information including the trial measurement accuracy information in association with the image.

In this embodiment, the measuring device 100Y may perform the process of step S302 between steps S303 and S304.

[Example of implementation by software]
The control blocks of the measuring devices 100, 100X and 100Y may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or may be realized by software.

In the latter case, the measuring devices 100, 100X and 100Y include a computer that executes a program instruction which is software for realizing each function. This computer includes, for example, at least one processor (control device) and at least one computer-readable recording medium in which the program is stored. Then, in the computer, the processor reads the program from the recording medium and executes the program, thereby achieving the object of the present invention. As the processor, for example, a CPU (Central Processing Unit) can be used. As the recording medium, in addition to a “non-temporary tangible medium” such as a ROM (Real Only Memory), a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, a RAM (Random Access Memory) for developing the above program may be further provided. Further, the program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. It should be noted that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the above program is embodied by electronic transmission.

〔summary〕
The measuring device according to the first aspect of the present invention outputs the measurement unit that measures the measurement target based on the image of the reinforcing bar to be measured by the image pickup unit, and the measurement accuracy information related to the measurement accuracy in association with the image. It is equipped with a control unit.

In the measuring device according to the second aspect of the present invention, in the first aspect, the measurement accuracy information may include information regarding at least one of the internal parameter and the external parameter of the imaging unit.

The measuring device according to the third aspect of the present invention is calculated by the trial measurement unit and the trial measurement unit that measure the trial measurement target and calculate the measurement accuracy of the measurement result of the trial measurement target in the first or second aspect. The control unit further includes a storage unit for storing trial measurement accuracy information indicating the measurement accuracy of the measurement result of the trial measurement target, and the control unit has the trial measurement accuracy stored in the storage unit in the measurement accuracy information. Information may be included.

In the measuring device according to the fourth aspect of the present invention, in the third aspect, the trial measurement target may be an object having a known pattern.

In the measuring device according to the fifth aspect of the present invention, in the third aspect, the trial measurement target is a reinforcing bar, and the trial measurement unit compares the measurement result of the trial measurement target with the actual measurement value of the trial measurement target. Then, the measurement accuracy of the measurement result of the trial measurement target may be calculated.

In the measuring device according to the sixth aspect of the present invention, in the fifth aspect, the trial measuring unit may measure at least one of the reinforcing bar diameter and the reinforcing bar spacing of the trial measurement target.

In any one of the above aspects 1 to 6, the measuring device according to the seventh aspect of the present invention calculates the external parameters of the image pickup unit based on the image, and the control unit calculates the external parameters of the image pickup unit. When a preset period has elapsed from the calculated date and time, a progress notification unit for notifying that fact may be further provided.

In any one of the above aspects 1 to 7, the measuring device according to the eighth aspect of the present invention further includes a measurement accuracy notification unit for notifying the measurement accuracy when the measurement accuracy is lower than the preset measurement accuracy. You may be prepared.

The measuring device according to each aspect of the present invention may be realized by a computer. In this case, the measuring device is realized by the computer by operating the computer as each part (software element) provided in the measuring device. The control program of the measuring device and the computer-readable recording medium on which the control program is recorded also fall within the scope of the present invention.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Further, by combining the technical means disclosed in each embodiment, new technical features can be formed.

100, 100X, 100Y Measuring device 101, 101X, 101Y, Imaging unit 103, 103X, 103Y, Control unit 104 Notification unit (progress notification unit, measurement accuracy notification unit)
105, 105X, 105Y Storage unit 301, 301X Image 302 Vertical rebar (reinforcing bar)
303 Horizontal rebar (reinforcing bar)
304, 306 Measurement results 304a, 304c, 306a, 306c Reinforcing bar diameter 304b, 304d, 306b, 306d Reinforcing bar spacing 401, 401X Measurement accuracy information 501, 503 Baseline length (external parameter)
1011, 1011X, 1011Y First imaging unit (imaging unit)
1012, 1012X, 1012Y Second imaging unit (imaging unit)
1031 Measurement unit 1032, 1032X, 1032Y Trial measurement unit 1041 Display unit

Claims (9)

A measurement unit that measures the measurement target based on an image in which the reinforcing bar to be measured is captured by the image pickup unit.
A control unit that outputs measurement accuracy information related to measurement accuracy in association with the image,
A measuring device characterized by being equipped with. The measuring device according to claim 1, wherein the measurement accuracy information includes information regarding at least one of an internal parameter and an external parameter of the imaging unit. A trial measurement unit that measures the trial measurement target and calculates the measurement accuracy of the measurement result of the trial measurement target,
Further, a storage unit for storing trial measurement accuracy information indicating the measurement accuracy of the measurement result of the trial measurement target calculated by the trial measurement unit is provided.
The measuring device according to claim 1 or 2, wherein the control unit includes the trial measurement accuracy information stored in the storage unit in the measurement accuracy information. The measuring device according to claim 3, wherein the trial measurement target is an object having a known pattern. The target of the trial measurement is a reinforcing bar.
The third aspect of the present invention is characterized in that the trial measurement unit compares the measurement result of the trial measurement target with the actually measured value of the trial measurement target and calculates the measurement accuracy of the measurement result of the trial measurement target. The measuring device described. The measuring device according to claim 5, wherein the trial measuring unit measures at least one of the reinforcing bar diameter and the reinforcing bar spacing of the trial measurement target. The control unit calculates an external parameter of the image pickup unit based on the image, and obtains an external parameter.
The item according to any one of claims 1 to 6, further comprising a progress notification unit for notifying when a preset period has elapsed from the calculation date and time of the external parameter of the imaging unit. The measuring device described. The measuring device according to any one of claims 1 to 7, further comprising a measurement accuracy notification unit for notifying the measurement accuracy when the measurement accuracy is lower than the preset measurement accuracy. .. A measurement program for operating a computer as the measurement device according to claim 1, wherein the computer functions as the measurement unit and the control unit.

Images