JP3316683B2 - Stereo image display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention displays a stereo image,
The present invention relates to a stereo image display device that performs three-dimensional measurement on the display screen, and more particularly to a stereo image display device capable of displaying a part of the image at a large magnification and making it easy to grasp measurement points.

[0002]

2. Description of the Related Art Conventionally, a technique of analyzing a stereo image has been used in the field of photogrammetry and the like, and is particularly used for creating a topographic map.

When analyzing this stereo image, it is necessary to search for one of the left and right positions and the other corresponding point corresponding to this position. Correlation methods were used.
In any of these search methods, only a part of the stereo image is displayed in a stereoscopic manner.

[0004]

However, in the above-described conventional method of displaying only a partial image of a stereo image, since the stereo image displayed on the monitor has a relatively high magnification, the displayed local image is relatively high. It is difficult to measure while judging the position of the image in the whole image, and there is a problem in the efficiency of the measurement operation.

Recently, three-dimensional analysis of digital images obtained from a CCD camera or the like has become popular, and the image magnification can be freely changed regardless of the shooting distance of the camera.
The appearance of a stereo image display device capable of performing highly accurate measurement has been strongly desired.

[0006] Further, when a contour or the like to be measured is drawn by measuring each position, the point of the next contour may not appear on the display screen, and it is necessary to scroll the stereo image and the line drawing at the same time. is there. However, the scroll operation has a problem in that it takes time to transfer image data and draw a line drawing, which hinders efficient measurement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems. In a stereoscopic image measuring apparatus configured to display left and right stereo images on a monitor unit and stereoscopically view the left and right stereo images, A memory unit for storing, a monitor unit having a first display range and a second display range, and displaying at least two types of images having different magnifications in stereo; and a first display range of the monitor unit. A main image memory for storing image data for displaying the left and right stereoscopic images at a first magnification, and a first magnification for the left and right stereoscopic image data from the memory in the first display range of the monitor; A first transfer unit for compressing and transferring the image to be displayed on the monitor, and a sub-image memory for storing image data for displaying the left and right stereoscopic images at a second magnification in the second display range of the monitor unit. And a cursor unit for designating a measurement point on the main image displayed in the first display range; and when the measurement unit is designated on the main image in the first display range by the cursor unit, the memory Second stereoscopic image data for transferring image data near the measurement point to the sub-image memory unit for displaying on the monitor at a second magnification higher than the first magnification from the left and right stereoscopic image data of the unit; And transfer means.

[0008] The present invention may further include a magnification setting section for changing a first magnification displayed by the first display section and a second magnification displayed by the second display section.

Further, according to the present invention, when the measurement point designated by the cursor is changed, the image displayed in the second display range of the monitor is moved in accordance with the movement of the cursor. You can also.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention constructed as described above
A stereoscopic image measuring device that displays left and right stereo images on a monitor unit and stereoscopically views the stereo image, wherein a memory unit stores left and right stereo image data, and a monitor unit having a first display range and a second display range, At least two types of images having different magnifications are stereoscopically displayed, and the main image memory unit stores image data for displaying the left and right stereoscopic images at the first magnification in the first display range of the monitor unit. The transfer means compresses and transfers the left and right stereoscopic image data from the memory unit to the first display range of the monitor unit for display at the first magnification, and the sub-image memory unit stores the left and right stereoscopic image data in the second display range of the monitor unit. Image data for displaying the three-dimensional image at the second magnification, the cursor unit designates a measurement point on the main image displayed in the first display range, and the cursor unit designates a main point in the first display range. Point the measurement point on the image In this case, the second transfer means converts the image data in the vicinity of the measurement point from the left and right stereoscopic image data of the memory unit to the sub-image memory in order to display the image data on the monitor at a second magnification higher than the first magnification. Department.

In the present invention, the magnification setting section can change the first magnification displayed on the first display section and the second magnification displayed on the second display section.

Further, according to the present invention, when the measurement point designated by the cursor is changed, the image displayed in the second display range of the monitor can be moved with the movement of the cursor.

[0013]

【Example】

An embodiment of the present invention will be described with reference to the drawings.

"Stereo Image Measurement Method"

FIG. 9 shows the basic principle of a method of measuring a stereo image. When the left image 100 and the right image 200 after correcting the deviation in which the inclination of the left and right images is corrected are displayed on a 3D display, a three-dimensional model is displayed. Is displayed, and three-dimensional measurement can be performed. These images have the same Y without vertical parallax.
Since coordinates are provided, if the parallaxes in the X direction are associated with each other, three-dimensional coordinates can be obtained by the principle of triangulation. That is, as shown in FIG. 9, a measurement point (cursor) is displayed in a superimposed manner on the left and right images, and the point to be measured with the three-dimensional mouse is displayed on the left image 1
00, and only the cursor in the right image 200 is set to X
It is moved in the direction (up and down) to match the surface of the object.

There is also a method of visualization depending on the stereoscopic ability of the user for the correspondence in the stereoscopic vision.
An automatic search process using image correlation or the like for comparing the similarity between the left and right image densities can also be performed. The automatic search processing using the electronic computer is generally called stereo matching.

Next, a stereo image display device 1 will be described with reference to FIG. The stereo image display device 1 includes a control device main body 2, an optical disk drive 31 for a left photograph, an optical disk drive 32 for a right photograph, and a 3D monitor 4.

The control device main body 2 is an arithmetic processing device provided with a central processing unit, a memory and the like, and controls the entire stereo image display device 1. The internal configuration of the control device main body 2 will be described later in detail. Optical disk drive 3
Is composed of an optical disk drive 31 for the left photograph and an optical disk drive 32 for the right photograph. The optical disk drive 3 stores a large amount of image data from an external scanner or the like. The left photo optical disk drive 31 corresponds to a memory unit for storing left stereoscopic image data, and the right photo optical disk drive 32 corresponds to a memory unit for storing right stereoscopic image data. Things. In addition, if it is a large-capacity memory, not only an optical disk drive but any storage means can be adopted.

The 3D monitor 4 corresponds to a monitor section and is capable of stereoscopic viewing. 3D monitor 4
The high-resolution display 41 for the left image, the high-resolution display 42 for the right image, and the half mirror 43 are provided. A polarizing filter 411 is mounted on the front of the high resolution display 41 for the left image, and a polarizing filter 421 is mounted on the front of the high resolution display 42 for the right image. The polarization characteristics of the polarization filter 411 and the polarization filter 421 are configured to be orthogonal to each other, and the user can stereoscopically view the target image by observing with polarized glasses having polarization characteristics orthogonal to each other. Can be.

Next, the electrical configuration of the control device main body 2 will be described with reference to FIG.

The control device main body 2 includes a processing command unit 20, a buffer memory 21a, a buffer memory 21b, a main image memory 22a, a main image memory 22b, a sub image memory 23a, a sub image memory 23b, A line drawing / cursor memory 24a, a main line drawing / cursor memory 24b, a sub line drawing / cursor memory 25a, a sub line drawing / cursor memory 25b, a memory control unit 26a, and a memory control unit 26
b, the combining unit 27a, the combining unit 27b, the D / A converter 28a, the D / A converter 28b, and the feature extracting unit 291
And a correlator 292.

The buffer memory 21a and the main image memory 2
2a, a sub-image memory 23a, a main line drawing / cursor memory 24a, a sub-line drawing / cursor memory 25a, a memory control unit 26a, a synthesizing unit 27a, and a D / A converter 28a.
Is an electrical configuration of the left image system, and is connected to the high resolution display (left monitor) 41 for the left image.

Similarly, a buffer memory 21b, a main image memory 22b, a sub image memory 23b, a main line drawing / cursor memory 24b, and a sub line drawing / cursor memory 25b
The memory control unit 26b, the synthesizing unit 27b, and the D / A converter 28b have an electrical configuration of a right image system, and are connected to a right image high-resolution display (right monitor) 42. .

The high resolution display (left monitor) 41 for the left image is divided into a main screen 411 and a sub-screen 412, and the main screen 411 corresponds to a first display unit.
For displaying a stereo image stored in the stereo image storage unit at the first magnification.
The sub screen 412 corresponds to the second display unit, and the main screen 4
It has a second display area smaller than 11, and is for displaying a stereo image within a range displayed on the main screen 411 at a second magnification larger than the first magnification.

Similarly, the high-resolution display (right monitor) 42 for the right image is divided into a main screen 421 and a sub-screen 422, and the main screen 421 has a first display area, and has a stereoscopic display at a first magnification. An image is displayed, and the sub-screen 422 has a second display area smaller than the main screen 421, and displays a stereo image in the range displayed on the main screen 421 at a second magnification larger than the first magnification. It is for displaying.

The processing command unit 20 includes a central processing unit and the like,
This is for controlling and processing each electrical configuration of the control device main body 2.

The buffer memory 21a corresponds to a memory unit or a stereo image storage unit, and reads out image data to be subjected to stereo image processing from the optical disk drive 31 for the left photograph and temporarily stores the image data. .

The main image memory 22a corresponds to a main image memory section, and stores image data for displaying a left stereoscopic image at a first magnification on a main screen 411 as a first display range of the left monitor 41. It is for memorizing.

The sub-image memory 23a corresponds to a sub-image memory section, and stores image data for displaying a left stereoscopic image at a second magnification on a sub-screen 412, which is a second display range of the left monitor 41. It is for memorizing.

The main line drawing / cursor memory 24a has the same capacity as the main image memory 22a, and is for displaying white pixels only at the line drawing and cursor existing positions. The sub-line drawing / cursor memory 25a has the same capacity as the sub-image memory 23a, and performs white pixel display only at the line drawing and the cursor existing position.

The memory control unit 26a includes the buffer memory 2
1a and the main image memory 22a and the sub image memory 2 based on the screen magnification of the main screen 411 and the sub screen 412.
3a.

The synthesizing unit 27a synthesizes image data of the main image memory 22a, the sub image memory 23a, the main line drawing / cursor memory 24a, and the sub line drawing / cursor memory 25a,
This is for forming composite image data, and is configured to output the composite image data to the left monitor 41 via the D / A converter 28a.

Similarly, as the right image system, the buffer memory 2
1b, main image memory 22b, sub image memory 23b, main line drawing / cursor memory 24b, and sub line drawing / cursor memory 2
5b, a memory control unit 26b, a synthesizing unit 27b, and a D / A converter 28b, which are the same as those in which the electrical configuration of the left image system is replaced with the right image, and thus the description is omitted.

The feature extracting unit 291 is for extracting the features of the image from the image data. In this embodiment, the signal processing is performed on the values of the nine pixels near the designated point by the Laplacian Gaussian filter. A feature extraction method is employed. The Laplacian Gaussian filter corresponds to filtering of a digital image, and is a type of a spatial filter that performs processing in the same space as the image space. The Laplacian Gaussian filter is equivalent to a secondary differentiation operation, and calculates a difference in four directions with a certain point as a center. As a result, it is possible to extract a portion where the density changes rapidly as a feature.

The correlator 292 performs an automatic search process using image correlation for comparing the similarity between the left and right image densities. The details of the correlation process will be described later.

The input unit 293 provides the processing command unit 20 with
This is for inputting instructions for setting various magnifications, moving a cursor, and the like. The input unit 293 includes a keyboard,
Any type of input means such as a mouse can be adopted.

The operation of the embodiment constructed as described above will be described with reference to FIG. When the 3D measurement process starts,
First, in step 1 (hereinafter abbreviated as S1), a left stereoscopic image to be processed is transmitted from the left optical disk drive 31 to the buffer memory 21a. Similarly, a right stereoscopic image to be processed is sent from the right photo optical disk drive 32 to the buffer memory 21b. The selection of the image to be transmitted is performed by selecting the selected image designation signal (a) from the input unit 293.
Is transmitted to the processing command unit 20.

Next, in S2, the input section 293 sets and inputs the main screen magnification (LMAG) of the main screen 411 and the main screen 421. In this embodiment, the main screen magnification (LMAG) is
(1/2, 1/3,...) Is selected, but any method that can determine the main screen magnification (LMAG) is adopted. can do. The setting of the main screen magnification (LMAG) is performed by the input unit 29.
3 from the main screen magnification specifying signal (b).
Is transmitted to the memory control unit 26a and the memory control unit 26b via the.

Next, in S3, the processing command section 20 transfers the left image data from the buffer memory 21a to the main image memory 22a at an address interval corresponding to the main screen magnification (LMAG). Similarly, right image data is transferred from the buffer memory 21b to the main image memory 22b. The memory control unit 26a controls the address interval of the left image data read from the buffer memory 21a by the address interval determination signal (c). Similarly, the memory control unit 2
Reference numeral 6b controls the address interval of the right image data read from the buffer memory 21b. And the main screen magnification (LM
AG) becomes smaller, the address interval becomes larger, and a reduced image is formed on the main image memory 22b.

The processing command unit 20, the memory control unit 26a, and the memory control unit 26b for forming the reduced images of the main screens 411 and 421 perform the operation of the first transfer unit.

In S4, the input unit 293 sets and inputs the sub-screen magnification (HMAG) of the sub-screen 412 and the sub-screen 422. In this embodiment, the sub-screen magnification (HMAG)
Is configured to select any value of (1, 2, 3,...), But any method can be adopted as long as the method can determine the sub-screen magnification (HMAG). Can be.
The setting of the sub-screen magnification (HMAG) is performed by transmitting a sub-screen magnification designation signal (d) from the input unit 293 to the memory control unit 26a and the memory control unit 26b via the processing instruction unit 20. . Generally, the sub-screen magnification (HMA
G) is set higher than the main screen magnification (LMAG).

Next, in S5, a cursor movement signal (e) is input from the input section 293, and the cursor is moved. Then, as shown in FIG. 4A, on the main screen 411 and the main screen 421, the main image approximate measurement point LP (I, J) of the left image and the main image approximate measurement point RP (K, J) of the right image. Is specified. That is, the operator moves the left and right cursors so as to position the cursor on the measurement point while viewing the screen of the monitor 4, and designates the measurement point. After designation LP (I, J), RP
A square frame indicating the measurement range of the sub-screens 412 and 422 around the (K, J) is displayed on the main screens 411 and 421. In the present embodiment, five main image approximate measurement points are set, and the main image approximate measurement points LP (I, J) of the left image are:
P1, P2, P3, P4, and P5, and the main image approximate measurement points RP (K, J) of the right image are P1 ', P2',
P3 ', P4', and P5 '. Hereinafter, P1, P
The measurement is performed one by one in the order of 2, P3, P4, and P5.

The input unit 293 and the processing command unit 20 are
This is for performing a control operation of a cursor portion for designating a measurement point on the main screens 411 and 421.

In step S6, the processing command section 20 transfers the left image data from the buffer memory 21a to the sub-image memory 23a at an address interval corresponding to the sub-screen magnification (HMAG). Similarly, the right image data is transferred from the buffer memory 21b to the sub-image memory 23b. In addition, the memory control unit 26a uses the address interval determination signal (c) to
The address interval of the left image data read from the buffer memory 21a is controlled. Similarly, the memory control unit 26b controls the address interval of the right image data read from the buffer memory 21b. Then, as the sub-screen magnification (HMAG) increases, the address interval decreases, and an enlarged image is formed on the sub-image memory 23b.

It should be noted that the processing command section 20, the memory control section 26a, and the memory control section 26 for forming the compressed image of the sub-screen are provided.
b performs the operation of the second transfer means.

Next, in S7, feature extraction on the left sub-screen 412 is performed. This feature extraction is performed by the Laplacian Gaussian filter of the feature extraction unit 291.

Then, in S8, as shown in FIG. 4B, the reference measurement point whose feature is extracted on the left sub-screen 412 is set to LP (I
a, Ja).

Further, in S9, a correlation process is performed by the correlator 292. Generally, an absolute difference method, a correlation coefficient method, or the like is used for the correlation processing. That is, as shown in FIG. 4C, the reference measurement point LP (Ia, J) on the left sub-screen 412 determined in S8.
The corresponding point RP (Ka, J) of the right sub-screen 422 corresponding to a)
Search for a).

Next, in S10, a left and right image cursor is displayed. That is, the main screen 411 and the sub-screen 41 of the left monitor 41
2 and the reference measurement point LP (Ia, Ja) is displayed, and the corresponding point RP (Ka, Ja) is displayed on the main screen 421 and the sub-screen 422 of the right monitor 42.

Then, in S11, a stereoscopic view is performed as shown in FIG. 4D, and the operator confirms the corresponding points. That is, if there is a very similar image having no feature in the left and right images, an error may occur in the correlation processing.

If an error in the corresponding point is found in S11, the process proceeds to S12, in S12 the position of the right cursor is forcibly corrected, and the process proceeds to S13.

In S13, the main line drawing / cursor memory 24
A line drawing connecting the previous corresponding point and the current corresponding point and connecting the previous measured point and the current measured point are written to a and 24b and displayed on the main screens 411 and 421.

In S14, in this embodiment, it is determined whether or not the measurement of P5 has been completed. If the measurement has been completed up to the last measurement of P5, the process proceeds to S15 to end the measurement.
If the measurement has not been completed up to P5, the process proceeds to S16, and it is determined whether or not the cursor has moved. If the cursor has been moved, that is, if it is determined that the measurement is to be continued, the process proceeds to S17.

In S17, it is determined whether the movement of the cursor is equal to or higher than the predetermined speed, or whether the cursor is out of the range of the screen of the sub-images 412, 422.
Proceeding to S18, the sub-screens 412, 422 are stopped, and the process returns to S5 to repeat the measurement. Further, in S17, if the movement of the cursor is not higher than the predetermined speed or does not move out of the range of the screen, the process proceeds to S19 to scroll the sub-screens 412, 422. Next, the process proceeds to S20, in which a rough measurement point is designated as in S5, and then the process proceeds to S7.

In this embodiment, the method of designating five points P1 to P5 has been described. However, the number can be changed to an appropriate number according to the contour of the object.

In step S13, not only each corresponding point is simply connected by a line segment, but also the measurement can be performed as a polyline. A polyline is a figure that connects several line segments, and the measurement points are continuously connected by line segments each time measurement is performed.

FIG. 5 shows an example in which each vertex is measured in the order of 1 to 6. At the end of the measurement, "close the polyline" (FIG. 5A) is specified or "open the polyline" (see FIG. 5). 5 (b)). Further, when measurement is mistakenly performed, addition or deletion can be performed. Also, if a constant height (Z) is given to control the left and right cursor intervals and the polyline is measured, a contour line can be drawn.

Further, not only polyline measurement but also circle measurement and arc measurement can be used. In the circle measurement, as shown in FIG. 6A, a center point A and a radius B are designated to give a figure data of a circle, or as shown in FIG. , C are designated. The arc measurement was performed as shown in FIG.
By giving an end point C and an intermediate point B on the circumference, graphic data of an arc is given. By utilizing such polyline measurement, circle measurement, arc measurement, or the like, there is an advantage that drawing of the outline of the measurement object can be facilitated and graphic data can be managed by using some point data.

The main screen magnification (LMAG) corresponds to the first magnification, and the sub-screen magnification (HMAG) corresponds to the second magnification. An input unit 293 for setting and changing these magnifications and a processing command unit 20
The memory control unit 26a and the memory control unit 26b correspond to a magnification setting unit. In this embodiment, the sub-image 4
Although it has been described that the correlation processing is used only in the measurement of 12, 422, the correlator 292 is used in the main image memory 22.
a, 22b to transfer the data, the main screen 41
It is also possible to adopt a configuration in which the cursor position is determined by using the correlation processing also in the rough measurement point designation on 1, 421.

Next, the correlation processing of the correlator 292 will be described in detail with reference to FIG. In the present embodiment, a data sequence near the measurement point in the reference image data of the left image is searched for a similar data sequence from the image data group of the right image, and the absolute difference method is employed as a method for this. ing. As will be described in detail below, this method searches for a data string with the smallest absolute difference and calculates a corresponding point from the image address.

In S1 of FIG. 8, each parameter is
Input from 93. In the present embodiment, the number of correlation data points N
W, search data score ISEAR, correlation comparison ABSMIN
Set. The correlation data point number NW means that NW vertical and NW horizontal square reference image data are set near the measurement point of the left image. Search data score ISEAR
Indicates how many search image data, which is a data sequence of the right image corresponding to the reference image data, are arranged in the horizontal direction. In other words, the right image of the NW vertical and ISEAR rectangular right images Indicates how many data strings are arranged in the horizontal direction. The correlation comparison ABSMIN is:
In order to search for a case where the absolute difference to be calculated is minimum, the value is set as an initial value in numerical calculation.

Next, in S2, the number N of reference image data of the left image is calculated. In this embodiment, since the reference image data is a square, NW * NW is the number N of the reference image data. In S2, the number M of search image data of the right image is M
Is calculated. That is, like the reference image data,
Since NW pieces are arranged, the number M of search image data of the right image is NW * ISEAR.

In S3, the reference image data of the left image is read from the sub-image memory 23a as LDATA (N), and the search image data of the right image is read as RDATA (M).
From the sub-image memory 23b.

Next, in S4, the total sum of LDATA (N) is obtained and divided by N to obtain the reference image average value XMEAN.
Is calculated.

In S5, 1 is assigned to ICOUNT, and SEARCH is further defined. This SEARCH
Is the vertical N set to the right image corresponding to the reference image data.
This corresponds to the number of one block of W and NW horizontal search image data. In this embodiment, ICOUNT indicates the number of the search image data block from the left.

Next, in S6, one block of the NW vertical and NW horizontal search image data is set as the right image, and the corresponding one block is selected from the RDATA (M) of the right image search image data. And transfers and stores this image data as SDATA (N).

Then, in S7, the S transferred and stored in S6
By calculating the sum of DATA (N) and dividing by N,
The search image average value YMEAN is calculated.

Next, at S8,

Ai = (LDATA (i) -XMEAN)
-(SDATA (N) -YMEAN)

Are calculated from i = 1 to N, and their sum is obtained as ABS.

Further, in S9, the ABS obtained in S8 is changed to AB
It is determined whether it is smaller than SMIN. A in S9
If the BS is smaller than the ABSMIN, in S10, A
ABS is substituted for BSMIN and replaced, and the value of ICOUNT at this time is stored as MATPON.

Next, the process proceeds to S11, where ICOUNT is SE.
It is determined whether it matches the ARCH. That is, ICOUNT is S
When the data matches the EARCH, the SDATA of each block is searched from the search image data RDATA (M) of the right image.
(N) means that all correlation processing has been completed. In this case, the process ends in S12, and MA
The block of the search image data corresponding to the ICOUNT stored in the TPON becomes a block (that is, a corresponding data string) in the search image data of the right image corresponding to the reference image data of the left image.

Then, in S11, ICOUNT is SEARC.
If it does not match H, the process proceeds to S13, where one block of the search image data is changed to the block on the right by one.
COUNT + 1 is assigned to ICOUNT and the process returns to S6.

By repeating the above operation, the ICOUNT with the smallest ABS can be determined.
The block in the search image data of the right image specified in
It is the corresponding point to be sought.

[0076]

According to the present invention having the above-described configuration, the left and right stereo images are displayed on the monitor section, and the left and right stereo image data is stored in the stereo image measuring apparatus configured to stereoscopically view the left and right stereo images. And a monitor unit having a first display range and a second display range, and displaying at least two types of images having different magnifications in stereo. A main image memory for storing image data for displaying a stereoscopic image at a first magnification, and displaying left and right stereoscopic image data from the memory in the first display range of the monitor at a first magnification; A first transfer unit for compressing and transferring, a sub-image memory unit for storing image data for displaying the left and right stereoscopic images at a second magnification in the second display range of the monitor unit; 1 A cursor unit for specifying a measurement point on the main image displayed in the display range; and a left and right stereoscopic image of the memory unit when a measurement point is specified on the main image in the first display range by the cursor unit. A second transfer unit configured to transfer, from the image data, image data near the measurement point to the sub-image memory unit for displaying on the monitor at a second magnification higher than the first magnification. Therefore, it is extremely easy to grasp which position of the current measurement point falls on the whole, and there is an excellent effect that the corresponding point search of the measurement point can be realized with high accuracy and high reliability.

[0077]

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration of a stereoscopic image display device 1 according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating an electrical configuration of a control device main body 2 according to the present embodiment.

FIG. 3 is a diagram illustrating an operation of the stereoscopic image display device 1 according to the embodiment.

FIG. 4 is a diagram showing a monitor screen of the stereoscopic image display device of the embodiment.

FIG. 5 is a diagram illustrating a polyline measurement according to the present embodiment.

FIG. 6 is a diagram illustrating circle measurement according to the present embodiment.

FIG. 7 is a diagram illustrating arc measurement according to the present embodiment.

FIG. 8 is a diagram illustrating the operation of the correlator 292 according to the present embodiment.

FIG. 9 is a diagram illustrating a basic principle of a method for measuring a stereo image.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stereo image display device 2 Control device main body 20 Processing command part 21 Buffer memory 22 Main image memory 23 Sub-image memory 24 Main line drawing / cursor memory 25 Sub-line drawing / cursor memory 26 Memory control part 27 Synthesizing part 28 D / A converter 291 Feature extraction unit 292 Correlator 293 Input unit 3 Optical disk drive 31 Optical disk drive for left photo 32 Optical disk drive for right photo 4 3D monitor 41 Left monitor 411 Main screen 412 Sub screen 42 Right monitor 421 Main screen 422 Sub screen

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-216403 (JP, A) JP-A-62-130303 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01B 11/00-11/30 102 G01C 11/00-11/34 G06T 17/00 H04N 7/18 H04N 13/00-17/06

Claims (3)

(57) [Claims] 1. A left and right stereo image is displayed on a monitor unit.
And a stereoscopic image measurement device configured to stereoscopically view it.
Memory for storing the left and right stereoscopic image data.
A memory portion, a first display range and a second display range,
At least two types of images with different magnifications are displayed in stereo.
Monitor section and the first display range of the monitor section
To display the left and right stereoscopic images at a first magnification.
A main image memory unit for storing image data, and the memory unit
The left and right stereoscopic image data from the first
The first image to be compressed and transferred to be displayed at the first magnification in the display range.
1 transfer means, and in the second display range of the monitor unit,
Image for displaying the left and right stereoscopic images at a second magnification
A sub-image memory unit for storing data, and the first display range
Cursor for specifying measurement points on the main image displayed in
A main image of the first display range by using a cursor portion and the cursor portion.
When a measurement point is specified on the image, the left and right
From the stereoscopic image data, a second magnification higher than the first magnification
To display on the monitor at the magnification,
Second transfer for transferring the nearby image data to the sub-image memory unit
A stereo image display device comprising a transfer unit . 2. The stereo image according to claim 1, further comprising: a magnification setting unit for changing a first magnification displayed by the first display unit and a second magnification displayed by the second display unit. Display device. 3. The measurement point designated by the cursor section changes.
When it is changed, in the second display range of the monitor unit,
Move the displayed image as the cursor moves.
The stereoscopic image display device according to claim 1 or 2, wherein the stereoscopic image display device is configured such that