JP3157483B2 - Stereoscopic inspection apparatus and computer-readable recording medium storing stereoscopic inspection program - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stereoscopic inspection apparatus for inspecting whether or not stereoscopic vision is obtained by binocular fusion with near vision in daily vision, and a computer-readable recording medium storing a stereoscopic inspection program. About.

[0002]

2. Description of the Related Art The present applicant has already developed a method called a random dot test as a method for inspecting whether or not stereoscopic vision is obtained by binocular fusion with near vision in daily vision (Japanese Unexamined Patent Publication No. -98949). In addition,
Stereoscopic vision conceptually refers to the ability to stereoscopically capture an object by fusing both eyes. Specifically, it is expressed as the ability to perceive a slight difference in depth between two points due to fusion of the two eyes.

In the random dot test, for example, the background is a random dot image, and a square random dot image floating from the background is moved in the horizontal direction. Then, the examiner checks whether or not the subject's eyes are following the square random dot image, thereby inspecting whether or not the subject has stereoscopic vision.

In such a random dot test, it is necessary for the inspector to check whether the eyes of the inspected person are following a square random dot image.

[0005]

SUMMARY OF THE INVENTION The present invention provides a stereoscopic inspection apparatus and a stereoscopic vision inspection system which can automatically determine the stereoscopic function of a subject without observing the eye movements of the subject. It is an object of the present invention to provide a computer-readable recording medium on which an inspection program is recorded.

[0006]

SUMMARY OF THE INVENTION A stereoscopic inspection apparatus according to the present invention is a three-dimensional display apparatus in which a stereoscopic image composed of random dot moving images moves on a background image composed of random dot moving images. Display means for displaying a three-dimensional image on a three-dimensional display device, an imaging device for imaging the eye movement of the subject, and information on the eye movement of the subject obtained based on the captured image of the imaging device. On the basis of,
A determination means for determining whether or not the stereoscopic function of the subject is normal is provided. As the display means, for example, a stereo image composed of random dot moving images is displayed on a background image composed of random dot moving images. A three-dimensional display device that displays a three-dimensional image that moves periodically with a period is used. As the determination unit, for example, the period of the eye movement of the subject is determined based on the image captured by the imaging device. It is characterized in that a device that determines whether the stereoscopic function of the subject is normal by measuring and comparing the measured period of the eye with the moving period of the stereoscopic image is used.

[0007]

[0008] Alternatively, as the display means, for example, a three-dimensional image such that a three-dimensional image composed of moving images of random dots reciprocates at predetermined intervals on a background image composed of moving images of random dots is displayed. Is used as the determination means, for example, by measuring the period of the eye movement of the subject based on the captured image of the imaging device, and the measured eye period and the movement period of the stereoscopic image A device that determines whether the stereoscopic function of the subject is normal by comparison is used.

In this case, the period of the eye movement of the subject is
For example, it is obtained as follows. The motion vector of the eye movement of the subject is measured based on the image captured by the imaging device, and the time from the time when the motion vector becomes 0 to the time when the next motion vector becomes 0 is measured a plurality of times. I do. Then, the period of the eye movement of the subject is obtained based on the average value of the obtained measurement values.

A computer-readable recording medium on which a stereoscopic inspection program according to the present invention is recorded is a three-dimensional image in which a stereoscopic image composed of moving images of random dots moves on a background image composed of moving images of random dots. Is displayed on a three-dimensional display device, and the information about the eye movement of the subject obtained based on the captured image of the imaging device for capturing the eye movement of the subject is obtained. A stereoscopic inspection program for causing a computer to realize a determination function of determining whether or not a stereoscopic function of a person is normal, and a display function is:
For example, a function of displaying a three-dimensional image in which a three-dimensional image composed of random-dot moving images periodically moves at predetermined intervals on a background image composed of random-dot moving images on a three-dimensional display device. The function is, for example, by measuring the period of the eye movement of the subject based on the image captured by the imaging device, and comparing the measured period of the eye with the movement period of the stereoscopic image, It is a function of determining whether or not the stereoscopic function is normal.

[0011]

[0012] Alternatively, the display function is, for example, a three-dimensional image in which a three-dimensional image composed of random dot moving images reciprocates at a predetermined cycle on a background image composed of random dot moving images. The determination function is, for example, measuring the period of the eye movement of the subject based on the image captured by the imaging device, and comparing the measured eye period with the movement period of the stereoscopic image. By
This is a function for determining whether or not the stereoscopic function of the subject is normal.

In this case, the period of the eye movement of the subject is
For example, it is obtained as follows. The motion vector of the eye movement of the subject is measured based on the image captured by the imaging device, and the time from the time when the motion vector becomes 0 to the time when the next motion vector becomes 0 is measured a plurality of times. I do. Then, the period of the eye movement of the subject is obtained based on the average value of the obtained measurement values.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the appearance of the stereoscopic inspection apparatus.

The stereoscopic inspection apparatus includes a personal computer 1 operated by an inspector and a three-dimensional display apparatus (3) for providing an inspected person with an image for stereoscopic inspection.
A D display device 2, a CCD camera 3 attached to the 3D display device 2 for imaging the eye movement of the subject, and a speaker 4 for providing voice guidance or the like to the subject. . In this example, the personal computer 1 has a two-dimensional display (2
D display) 19 is used. As the 3D display device 2, a parallax barrier type is used.

FIG. 2 shows the configuration of the stereoscopic inspection apparatus.

The personal computer 1 has a CPU 11
Is controlled by A hard disk 12 for storing the program (stereoscopic inspection program) and a memory 13 for storing necessary data are connected to the CPU 11. Further, an input device 14 including a mouse, a CCD camera 3 and a voice synthesizing device 5 are connected to the CPU 11. The voice synthesizer 5 is connected to the speaker 4.

Further, a first frame memory 15 and a second frame memory 16 are connected to the CPU 11. The first frame memory 15 stores the D / A converter 1
7 is connected to the 2D display 19. The second frame memory 16 is connected to the 3D display device 2 via a D / A converter 18.

FIG. 3 shows the configuration of the display unit of the 3D display device 2.

As shown in FIG. 4, the 3D display device 2 displays a reduced left-eye image 30L, which is obtained by reducing the original left-eye image by half in the horizontal direction, from the personal computer 1, and an original right-eye image. Information 30 consisting of a right-eye reduced image 30R in which the image for use has been reduced by half in the horizontal direction.
Is sent. The 3D display device 2 decomposes the received left-eye reduced image and right-eye reduced image into vertically elongated strip images, respectively, and displays a left-eye strip image 31L on the liquid crystal panel 21 as shown in FIG. The right-eye strip images 31R are alternately arranged in the horizontal direction and displayed.

On the back side of the liquid crystal panel 21, a backlight 22 is provided. On the front side of the liquid crystal panel 21, a parallax barrier 23 in which openings 23a and light shielding portions 23b are alternately arranged in the horizontal direction is arranged. When the subject observes the image on the liquid crystal panel 21 through the parallax barrier 23, the left eye L sees only the strip image for the left eye, and the right eye sees only the strip image for the right eye. .

In this stereoscopic inspection apparatus, a random dot test is performed. In the random dot test, the background is a random dot image, and a square random dot image raised from the background is moved in the horizontal direction.

The background random dot image and the square random dot image are moving images in which the random dots themselves appear to be moving. In order to obtain such a moving image, a different dot pattern is used for each of the background random dot image and the square random dot image.
Two random dot patterns are provided. Then, for each image, four types of random dot patterns are sequentially switched and displayed at predetermined time intervals, thereby obtaining a moving image in which the dots of random dots are moving. These random dot patterns are stored on the hard disk 12.

An image displayed on the 3D display device 2 when the random dot test is performed will be described.

First, a random dot pattern for generating a background random dot image and a random dot pattern for generating a square random dot image are read from the hard disk 12 and stored in the memory 13.

Then, based on the images stored in the memory 13, a left-eye image and a right-eye image including a background image and a square image are generated. At this time, for a square image, the horizontal position of the image appearing in the left-eye image is the horizontal position of the image appearing in the right-eye image so that the background is the same image between the left-eye image and the right-eye image. , An image for the left eye and an image for the right eye are generated so as to shift to the right.

That is, as shown in FIG. 5, the image for the left eye is an image obtained by synthesizing the background image 81L and the square image 82L shifted to the right side from the reference position, and the image for the right eye is the background image 81R. , And a square image 82R at a position shifted leftward from the reference position. Here, the composite image means that the display portion of the square image in the background image is
Refers to an image replaced with a square image.

For a square image, an image for the left eye and an image for the right eye that change with time so as to reciprocate on the screen in the horizontal direction are generated. The moving cycle of the square image is
The adjustment can be made according to the cycle set by the examiner. The random dot patterns forming the background image and the square image are sequentially changed at predetermined time intervals using four types of random dot patterns prepared respectively.

The left-eye image and the right-eye image generated in this manner are each reduced by half in the horizontal direction to generate an image for one frame. The generated image for one frame is sent to the 3D display device 2 via the frame memory 16 and the D / A converter 18.

The 3D display device 2 decomposes the received left-eye reduced image and right-eye reduced image into vertically elongated strip images, respectively, and displays a left-eye strip image and a right-eye strip image on the liquid crystal panel 21. The strip images and the strip images are alternately arranged in the horizontal direction and displayed. Therefore, when a normal subject observes the image displayed on the liquid crystal panel 21, the square random dot image appears to move in the horizontal direction in a state of being raised with respect to the background.

Next, in the random dot test,
An image displayed on the 2D display 19 will be described.

In the random dot test, 3D
A two-dimensional image representing the movement of the stereoscopic image displayed on the display device 2 is displayed. In other words, based on the stereoscopic image (the left-eye image and the right-eye image) supplied to the 3D display device 2, as shown in FIG. 6, a two-dimensional moving image in which the movement of the square image protruding from the background surface can be obtained. It is displayed on the 2D display 19.

FIG. 7 shows the overall processing procedure by the CPU 11 during the random dot test.

First, when the moving cycle of the square image is set by the examiner (step 1), the moving cycle is stored in the memory 13 (step 2).

Next, a left-eye image and a right-eye image in which a square image reciprocates in a cycle corresponding to the set moving cycle are generated, and sequentially sent to the second frame memory 16 so that a 3D display is generated. A three-dimensional image is displayed on the device 2 such that the square random dot image moves in the horizontal direction in a state of being raised with respect to the background (step 3).

When such display is started, a voice guidance such as "Please follow the square random dot image with your eyes" is output to the subject through the speaker 4 (step 4).

Next, images from the CCD camera 3 are sequentially captured (step 5). FIG. 8 shows an example of a captured image. Based on the captured image, the eye movement of the subject is extracted (step 6). Then, the stereoscopic ability of the subject is determined based on the extracted eye movements of the subject (Step 7).

Specifically, for example, the period of the eye movement of the subject is measured based on the captured image, and the measured period of the eye movement of the subject and the period of the square random dot image are determined. If the two are substantially equal, it is determined that the stereoscopic function is normal. As a method of measuring the period of the eye movement of the subject, for example, a motion vector of the eye movement of the subject is measured, and the time when the motion vector becomes 0 and then the time when the motion vector becomes 0 next Measure the time sequentially until: An average of the times obtained a plurality of times in this way is obtained, and twice the average value is obtained as a cycle.

When it is determined that the subject's stereoscopic ability is normal, the fact is stored in the hard disk 12 and the current test is terminated (step 8). If it is determined that the subject's stereoscopic ability is abnormal, the fact is stored in the hard disk 12 and the current test is terminated (step 9).

In the random dot test, the background and the square image, which is the object to be stereoscopically viewed, are set as random dot images because the image displayed on the 3D display device 2 is viewed only with one eye. This is to prevent the object from being recognized.

The reason why the dots in the random dot image of the square image which is the background and the object to be stereoscopically viewed are moved even when the object to be stereoscopically viewed cannot be stereoscopically viewed when the object to be stereoscopically viewed is moved. This is to prevent the movement of the stereoscopic target object from being recognized. This principle is based on the principle that, for example, when a mole moves underground in a sandbox, the surface of the sandbox moves along the path of the sandbox, so the path of the mole can be known. For example, it will be understood from the fact that even when a mole moves underground, its path is not known.

In the above embodiment, a parallax barrier type display device is used as the 3D display device, but a 3D display device without other glasses such as a lenticular type may be used. Further, as the 3D display device, a 3D display device using polarizing glasses and liquid crystal shutter glasses together may be used.

The object to be stereoscopically viewed may be moved so as to draw a circle or an ellipse.

[0045]

According to the present invention, the examiner can automatically determine the stereoscopic function of the examinee without observing the eye movement of the examinee.

[Brief description of the drawings]

FIG. 1 is an external view showing an external appearance of a stereoscopic inspection apparatus.

FIG. 2 is a block diagram illustrating a configuration of a stereoscopic inspection apparatus.

FIG. 3 is a schematic diagram illustrating a configuration of a display unit of the 3D display device.

FIG. 4 is a schematic diagram illustrating an image supplied from a personal computer to a 3D display device and an image displayed on the 3D display device.

FIG. 5 is a schematic diagram illustrating a left-eye image and a right-eye image generated during a random dot test.

FIG. 6 is a schematic diagram showing a display screen of a 2D display during a random dot test.

FIG. 7 is a flowchart showing a processing procedure executed at the time of a random dot test.

FIG. 8 is a schematic diagram illustrating an example of a captured image of a CCD camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Personal computer 2 3D display device 3 CCD camera 11 CPU 12 Hard disk 13 Memory 14 Input device 15, 16 Frame memory 17, 18 D / A converter 19 2D display

────────────────────────────────────────────────── ─── Continuation of the front page (72) The inventor, Takeshi Takeshi 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-3-228731 (JP, A) JP-A JP-A-9-98949 (JP, A) JP-A-6-105808 (JP, A) JP-A-7-308290 (JP, A) JP-A-6-254051 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) H04N 13/00-15/00 A61B 3/08

Claims (6)

(57) [Claims] 1. A three-dimensional display device, display means for displaying a three-dimensional image in which a three-dimensional image composed of moving images of random dots moves on a background image composed of moving images of random dots, An imaging device for imaging the eye movement of the subject, and whether the stereoscopic function of the subject is normal based on information on the eye movement of the subject obtained based on the captured image of the imaging device. Determining means for determining whether or not the image is a stereoscopic inspection apparatus , wherein the display means comprises a background composed of a moving image of random dots.
On the image, a three-dimensional image consisting of random dot moving images
A three-dimensional image that moves periodically at a predetermined period
The display means is displayed on a display device, and the determination means is configured to perform inspection based on an image captured by the imaging device.
The period of the eye movement of the person, and the measured period of the eye,
By comparing with the movement cycle of the stereoscopic image, the subject
To determine whether the stereoscopic function is normal or not.
Characteristic stereoscopic inspection equipment. 2. A three-dimensional display device, a moving image of random dots
On the background image consisting of images, from the moving image of random dots
Display three-dimensional images such as moving three-dimensional images
Display means for displaying on the device, image of eye movement of subject
Imaging device for performing
Based on the information about the eye movements of the subject
To determine whether the subject's stereoscopic function is normal
Means, a stereoscopic vision test device comprising a said display means, a background consisting of moving image composed of random dots
On the image, a three-dimensional image consisting of random dot moving images
Three-dimensional image that reciprocates in a predetermined cycle
The determination means is configured to display an image to be inspected based on a captured image of the imaging device.
The eye movement period and measure the eye period
By comparing with the movement cycle of the body image,
The feature is to determine whether the stereoscopic function is normal or not.
A stereoscopic inspection device to be considered. 3. The method according to claim 2, wherein the determining unit obtains an image obtained by an imaging device.
The motion vector of the eye movement of the subject
After the vector becomes 0, the motion vector becomes 0
The time until the point where it became
Measures the period of the eye movement of the subject based on the measurement results
3. The stereoscopic inspection apparatus according to claim 2, further comprising:
Place. 4. A background image comprising a moving image of random dots.
A three-dimensional image composed of moving images of random dots is transferred on the image.
Displaying a moving 3D image on a 3D display device
Display function, and for capturing the eye movements of the subject
The eye of the subject obtained based on the image captured by the imaging device
Based on the movement information, the subject's
Implements a function to determine whether or not it is normal on a computer
Computer with a stereoscopic inspection program
Data readable recording medium, wherein the display function is a background composed of a moving image of random dots.
On the image, a three-dimensional image consisting of random dot moving images
A three-dimensional image that moves periodically at a predetermined period
The determination function is a function to be displayed on a display device.
The period of the eye movement of the person, and the measured period of the eye,
By comparing with the movement cycle of the stereoscopic image, the subject
Function to determine whether the stereoscopic function of
A computer that records a stereoscopic inspection program as a feature
Data readable recording medium. 5. A background image comprising a moving image of random dots.
A three-dimensional image composed of moving images of random dots is transferred on the image.
Displaying a moving 3D image on a 3D display device
Function and imaging for imaging the eye movement of the subject
Eye movements of the subject obtained based on the image captured by the device
The subject's stereoscopic function is normal based on the
The computer has a judgment function to judge whether
Computer recording stereoscopic inspection program for
A readable recording medium, wherein the display function is a background including a moving image of random dots.
On the image, a three-dimensional image consisting of random dot moving images
Three-dimensional image that reciprocates in a predetermined cycle
The determination function is a function to be displayed on an apparatus, and the determination function is performed based on an image captured by an imaging apparatus.
The eye movement period and measure the eye period
By comparing with the movement cycle of the body image,
It is a function to determine whether the stereoscopic function is normal.
Computer that records stereoscopic inspection program
A readable recording medium. 6. The method according to claim 1, wherein the determining function is obtained by an imaging device.
The motion vector of the eye movement of the subject
After the vector becomes 0, the motion vector becomes 0
The time until the point where it became
Measures the period of the eye movement of the subject based on the measurement results
6. The stereoscopic inspection pro according to claim 5, which has a function of performing
Computer-readable recording medium on which
body.