JP3527833B2 - Stereoscopic inspection method, 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 records a stereoscopic vision inspection method, a stereoscopic vision inspection device, and a stereoscopic vision inspection program for inspecting whether stereoscopic vision by binocular fusion is obtained by near vision in daily vision. Computer-readable recording medium.

[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 by binocular fusion is obtained by near vision in daily vision (Japanese Patent Laid-Open No. Hei 9). -98949). In addition,
Conceptually, stereoscopic vision refers to the ability to stereoscopically capture an object by the fusion of both eyes. Specifically, it is expressed as the ability to sense a slight difference in depth between two points by the fusion of both eyes.

In the random dot test, for example, the background is a random dot image, and a stereoscopic index image made up of random dots pops out or retracts from the background. Alternatively, the three-dimensional index image composed of random dots is moved horizontally while floating from the background.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stereoscopic vision inspection method, a stereoscopic vision inspection device, and a computer-readable recording medium in which a stereoscopic vision inspection program is recorded, which can perform a novel random dot test. And

The present invention is also directed to a stereoscopic inspection method and a stereoscopic inspection apparatus capable of smoothly switching a background image consisting of only random dots and a three-dimensional image having a stereoscopic index image consisting of random dots in a short time. Another object of the present invention is to provide a computer-readable recording medium recording a stereoscopic vision inspection program.

[0006]

[0007]

According to a first stereoscopic inspection method of the present invention, at least two kinds of frame images composed of random dot pattern images having different patterns and a background image composed of random dot patterns are provided. And at least one type of frame image composed of a stereoscopic index image composed of a random dot pattern,
Each frame image is represented by pixel data having a value of 0 and pixel data having a value of 1 in only one bit position, and bit images having a value of 1 are different between the frame images. To generate one superimposed image,
By switching a plurality of types of conversion tables for obtaining the output image from the superimposed image, it is possible to switch between a moving image composed only of random dot patterns and a three-dimensional image including a stereoscopic index image and display the three-dimensional display device. Characterize.

A second stereoscopic inspection method according to the present invention is
At least two types of frame images each of which includes a background image formed of a random dot pattern and a stereoscopic index image formed of a random dot pattern, wherein the background image has different random dot patterns and the stereoscopic image has different random dot patterns. And at least two types of frame images composed of random dot pattern images having different patterns. Each frame image is composed of pixel data having a value of 0 and pixel data having a value of 1 at only one bit position. Bit positions that are expressed and have a value of 1 differ between frame images,
3D including a moving image composed only of random dot patterns and a stereoscopic index image by superimposing a single superimposed image to generate a superimposed image and switching a plurality of types of conversion tables for obtaining an output image from the superimposed image. An image is switched and displayed on a three-dimensional display device.

As each conversion table, for example, 1 is set only when the value of one bit position determined for each conversion table is 1 in each bit of the input pixel data.
The one that outputs the data corresponding to is used.

As each conversion table, for example, of the respective bits of the input pixel data, when the value of one bit position determined for each conversion table is 1, a predetermined first color data is output, When the value of one bit position determined for each conversion table is not 1, one that outputs a predetermined second color data different from the first color data is used.

[0011]

A first stereoscopic inspection device according to the present invention is
At least two types of frame images composed of random dot pattern images having different patterns, and at least one type of frame image composed of a background image composed of random dot patterns and a stereoscopic index image composed of random dot patterns. Each frame image is represented by pixel data having a value of 0 and pixel data having a value of 1 at only one bit position, and the bit position having a value of 1 is different between the frame images. A means for storing one superposed image in which the superposed images are stored in the frame memory, and a plurality of types of conversion tables for obtaining an output image from the superposed image are switched to thereby create a moving image consisting of only random dot patterns and a stereoscopic index image. And a means for switching to a three-dimensional image including And wherein the Rukoto.

A second stereoscopic inspection device according to the present invention is
At least two types of frame images each of which includes a background image formed of a random dot pattern and a stereoscopic index image formed of a random dot pattern, wherein the background image has different random dot patterns and the stereoscopic image has different random dot patterns. And at least two types of frame images composed of random dot pattern images having different patterns. Each frame image is composed of pixel data having a value of 0 and pixel data having a value of 1 at only one bit position. Bit positions that are expressed and have a value of 1 differ between frame images,
A means for storing one superposed image in which the superposed images are stored in the frame memory, and a plurality of types of conversion tables for obtaining an output image from the superposed image are switched to thereby create a moving image consisting of only random dot patterns and a stereoscopic index image. It is characterized in that it is provided with means for switching to and displaying on a three-dimensional display device.

Each conversion table is set to 1 only when the value of one bit position determined for each conversion table among the bits of the input pixel data is 1, for example.
The one that outputs the data corresponding to is used.

As each conversion table, for example, of the respective bits of the input pixel data, when the value of one bit position determined for each conversion table is 1, a predetermined first color data is output, When the value of one bit position determined for each conversion table is not 1, one that outputs a predetermined second color data different from the first color data is used.

A computer-readable recording medium recording the first stereoscopic vision inspection program according to the present invention,
At least two types of frame images composed of random dot pattern images having different patterns, and at least one type of frame image composed of a background image composed of random dot patterns and a stereoscopic index image composed of random dot patterns. Each frame image is represented by pixel data having a value of 0 and pixel data having a value of 1 at only one bit position, and the bit position having a value of 1 is different between the frame images. The step of storing one superposed image in which the superposed images are stored in the frame memory, and the switching of a plurality of types of conversion tables for obtaining the output image from the superposed image, so that a moving image consisting of only random dot patterns and a stereoscopic index image Of switching to a 3D image including the image and displaying on a 3D display device Characterized in that it records a stereoscopic vision test program for executing.

A computer-readable recording medium in which the second stereoscopic inspection program according to the present invention is recorded,
At least two types of frame images each of which includes a background image formed of a random dot pattern and a stereoscopic index image formed of a random dot pattern, wherein the background image has different random dot patterns and the stereoscopic image has different random dot patterns. And at least two types of frame images composed of random dot pattern images having different patterns. Each frame image is composed of pixel data having a value of 0 and pixel data having a value of 1 at only one bit position. Bit positions that are expressed and have a value of 1 differ between frame images,
The step of storing one superposed image in which the superposed images are stored in the frame memory, and the switching of a plurality of types of conversion tables for obtaining the output image from the superposed image, so that a moving image consisting of only random dot patterns and a stereoscopic index image It is characterized in that a stereoscopic vision inspection program for executing the step of displaying a three-dimensional image including the three-dimensional image on a three-dimensional display device is recorded.

As each conversion table, for example, among the bits of the input pixel data, 1 is set only when the value of one bit position determined for each conversion table is 1.
The one that outputs the data corresponding to is used.

As each conversion table, for example, among the respective bits of the input pixel data, when the value of one bit position determined for each conversion table is 1, a predetermined first color data is output, When the value of one bit position determined for each conversion table is not 1, one that outputs a predetermined second color data different from the first color data is used.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

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

The stereoscopic inspection apparatus includes a personal computer 1 operated by an inspector and a three-dimensional display device (3) for providing an image to be inspected by the inspected person.
D display device) 2. As the personal computer 1, in this example, a so-called notebook type personal computer having a two-dimensional display (2D display) 19 is used. As the 3D display device 2, a parallax barrier system is used.

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

The personal computer 1 has a CPU 11
Controlled by. The CPU 11 is connected to a hard disk 12 that stores the programs and the like and a memory 13 that stores necessary data. Also, CPU1
An input device 14 including a mouse is connected to 1.

Further, a first frame memory 15 and a second frame memory 16 are connected to the CPU 11. The first frame memory 15 includes the D / A converter 1
It is connected to the 2D display 19 via 7. The second frame memory 16 is connected to the 3D display device 2 via the color palette section 18 and the D / A converter 20.

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

On the 3D display device 2, as shown in FIG. 4, from the personal computer 1, the original left-eye image is reduced to 1/2 in the horizontal direction and the left-eye reduced image 30L and the original right-eye image. Information 30 including a right-eye reduced image 30R obtained by horizontally reducing the right-side image to 1/2.
Will be sent. The 3D display device 2 decomposes the transmitted reduced image for the left eye and reduced image for the right eye into vertically elongated strip-shaped images, and as shown in FIGS. 3 and 4,
On the liquid crystal panel 21, a strip image 31L for the left eye and a strip image 31R for the right eye are alternately displayed in the horizontal direction.

As shown in FIG. 3, a backlight 22 is arranged on the back side of the liquid crystal panel 21. 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, only the strip image for the left eye can be seen by the left eye L, and only the strip image for the right eye can be seen by the right eye R. .

The random dot test performed by this stereoscopic vision inspection apparatus will be described below.

In the random dot test, FIG.
As shown in FIG. 3, the three-dimensional image 200 in which the moving image 100 including only the random dot pattern and the three-dimensional index image 201 including the random dot pattern on the background image including the random dot pattern image are stereoscopically displayed.
And are switched to the 3D display device to be displayed. Then, it is determined whether or not the inspected person has a normal stereoscopic vision ability depending on whether or not the inspected person can recognize the stereoscopic index image. In FIG. 5, the three-dimensional index image 20
Although a contour line is included in the three-dimensional index image 201 so that 1 can be identified, the three-dimensional index image 201 is actually composed of random dots without a contour line.

As the stereoscopic index image, in this example, FIG.
As shown in Fig. 6, the English letter E (hereinafter referred to as the rightward solid index image: Fig. 6 (a)), the character obtained by rotating E by 90 ° in the clockwise direction (hereinafter referred to as the downward solid index image: Fig. 6).
(B)), a character obtained by rotating E by 180 ° in the clockwise direction (hereinafter, referred to as a leftward solid index image: FIG. 6C) is used. Each of these three-dimensional index images has a random dot pattern.

After the moving image of the random dots is displayed on the 3D display device 2 for a predetermined time, the rightward stereoscopic index image composed of the random dots is displayed on the 3D display device 2 for the predetermined time, and the superimposed image GM is displayed as shown in FIG. Is created in advance and stored in the hard disk 12.

That is, first, eight frame images G1 to G1 are previously prepared.
Prepare G8. Each of the frame images G1 to G8 is composed of a reduced image L for the left eye and a reduced image R for the right eye. In the following description, the first to twelfth random dot patterns P1 to P12 mean random dot patterns having different patterns.

The left-eye reduced image L and the right-eye reduced image R of the first frame image G1 are both composed of a first random dot pattern P1. Second frame image G2
The reduced image L for the left eye and the reduced image R for the right eye are both composed of the second random dot pattern P2. The left-eye reduced image L and the right-eye reduced image R of the third frame image G3 are both composed of a third random dot pattern P3. The left-eye reduced image L and the right-eye reduced image R of the fourth frame image G4 are both composed of a fourth random dot pattern P4.

Reduced image L for the left eye of the fifth frame image G5
Is a composite image of a background image composed of the fifth random dot pattern P5 and a reduced stereoscopic index image for the left eye composed of the ninth random dot pattern P9. Here, the composite image refers to an image in which the display position of the reduced stereoscopic index image is replaced with the reduced stereoscopic index image in the background image. The reduced image L for the right eye of the fifth frame image G5 is a combination of the background image formed of the fifth random dot pattern P5 and the reduced stereoscopic index image for the right eye formed of the ninth random dot pattern P9. It is composed of images.

Reduced image L for the left eye of the sixth frame image G6
Is composed of a background image composed of the sixth random dot pattern P6 and a reduced stereoscopic index image for the left eye composed of the tenth random dot pattern P10. The reduced image L for the right eye of the sixth frame image G6 is the background image composed of the sixth random dot pattern P6 and the tenth random dot pattern P1.
It is composed of a composite image with a reduced stereoscopic index image for the right eye, which is composed of 0.

A reduced image L for the left eye of the seventh frame image G7
Is a composite image of a background image composed of the seventh random dot pattern P7 and a reduced stereoscopic index image for the left eye composed of the eleventh random dot pattern P11. The reduced image L for the right eye of the seventh frame image G7 is the background image composed of the seventh random dot pattern P7 and the eleventh random dot pattern P1.
It is composed of a composite image with the reduced stereoscopic index image for the right eye composed of 1.

Reduced image L for the left eye of the eighth frame image G8
Is composed of a composite image of a background image composed of the eighth random dot pattern P8 and a reduced stereoscopic index image for the left eye composed of the twelfth random dot pattern P12. The reduced image L for the right eye of the eighth frame image G8 is the background image composed of the eighth random dot pattern P8 and the twelfth random dot pattern P1.
It is composed of a composite image with the reduced stereoscopic index image for the right eye composed of two.

In the fifth to eighth frame images G5 to G8, the horizontal position of the reduced stereoscopic index image in the reduced image L for the left eye is a predetermined amount to the right of the horizontal position of the reduced stereoscopic index image in the reduced image R for the right eye. Deviated. This shift amount (value corresponding to the parallax amount) is the fifth to eighth frame images G5 to G5.
In G8, everything is the same.

First to eighth random dot patterns P1
~ P8 and each dot of the random dot pattern forming each reduced stereoscopic index image is represented by 8-bit data in this example. That is, the black dot is "0" [00000
000], and the white dot is “255” [111111
11]. The numbers enclosed in [] represent 8-bit binary numbers.

The white dot data of the first frame image G1 is converted into "128" [10000000]. The white dot data of the second frame image G2 is set to "64" [0100
0000]. The data of the white dots of the third frame image G3 is converted into "32" [00100000].
The white dot data of the fourth frame image G4 is set to "16" [0
00100000]. The data of the white dots of the fifth frame image G5 is converted into "8" [00001000]. The data of the white dot of the sixth frame image G6 is set to "4".
Convert to [00000100]. Seventh frame image G7
The data of the white dot of is converted into "2" [00000010]. The data of the white dots of the eighth frame image G8 is set to "
1 "[00000001].

By adding the eight types of patterns after the white dot data has been converted in this way, a superimposed image GM relating to the rightward stereoscopic index image is generated. Similarly, a superimposed image regarding the downward facing stereoscopic index image and a superimposed image GM regarding the leftward stereoscopic target image are generated. The three superimposed images obtained in this way are the hard disk 12
Stored in.

The pixel position is represented by (x, y), the pixel data of the first frame image G1 is G1 (x, y), the pixel data of the second frame image G2 is G2 (x, y), the third. Pixel data of the frame image G3 of G3 (x, y), the fourth frame image G
4 pixel data is G4 (x, y), and the fifth frame image G5
Pixel data of G5 (x, y), the pixel data of the sixth frame image G6 is G6 (x, y), the pixel data of the seventh frame image G7 is G7 (x, y), and the eighth frame image When the pixel data of G8 is represented by G8 (x, y), the pixel data G (x, y) of the superimposed image GM is represented by the following mathematical formula 1.

[0044]

[Equation 1]

As will be described later, the CPU 11 sequentially transfers the first to eighth color palettes (conversion tables) Q1 to Q8 to the color palette section 18.

FIG. 9 shows output data output from the first color palette Q1 with respect to input data at each position in FIG. The input data of the first color palette Q1 is "0"

[00000000] to "127" [0111
1111] then "0"

Outputs [00000000] and the input data is "128" [10000000] ~ "
If 255 "[11111111], then" 255 "[1
11111111] is output. That is, the most significant digit (8th bit) of the input data is

If [0], then [000000
00] is output, and if the most significant digit of the input data is [1], [11111111] is output. Therefore, when the superimposed image GM is input to the first color palette Q1, the same data as that of the first frame image G1 is output.

FIG. 10 shows output data output from the second color palette Q2 with respect to the input data at each position in FIG. The input data of the second color palette Q2 is "0"

[00000000] to "63" [0011
1111] or the input data is “128”
[10000000] to "191" [1011111]
1] is "0"

[00000000] is output. Also, the input data is "64" [01000000]
~ "127" [01111111] or the input data is "192" [11000000] ~ "25
If it is 5 "[11111111], it is" 255 "
[11111111] is output. In other words, the 7th bit of input data

If [0]

[00000000] is output and if the 7th bit of the input data is [1], [1
11111111] is output. Therefore, the superimposed image G
When M is input to the second color palette Q2, the same data as the second frame image G2 is output.

FIG. 11 shows output data output from the third color palette Q3 with respect to input data at each position in FIG. In the third color palette Q3, the 6th bit of input data

If [0]

[00000000]
Is output, and if the 6th bit of the input data is [1], [11111111] is output. Therefore, when the superimposed image GM is input to the third color palette Q3, the same data as the third frame image G3 is output.

FIG. 12 shows output data output from the fourth color palette Q4 with respect to the input data at each position in FIG. In the fourth color palette Q4, the 5th bit of input data

If [0]

[00000000]
Is output, and if the fifth bit of the input data is [1], [11111111] is output. Therefore, when the superimposed image GM is input to the fourth color palette Q4, the same data as the fourth frame image G4 is output.

FIG. 13 shows output data output from the fifth color palette Q5 with respect to the input data at each position in FIG. In the fifth color palette Q5, the 4th bit of input data

If [0]

[00000000]
Is output, and if the fourth bit of the input data is [1], [11111111] is output. Therefore, when the superimposed image GM is input to the fifth color palette Q5, the same data as the fifth frame image G5 is output.

FIG. 14 shows output data output from the sixth color palette Q6 with respect to the input data at each position in FIG. In the 6th color palette Q6, the 3rd bit of input data

If [0]

[00000000]
Is output, and if the third bit of the input data is [1], [11111111] is output. Therefore, when the superimposed image GM is input to the sixth color palette Q6, the same data as the sixth frame image G6 is output.

FIG. 15 shows output data output from the seventh color palette Q7 with respect to input data at each position in FIG. In the 7th color palette Q7, the second bit of the input data

If [0]

[00000000]
Is output, and if the second bit of the input data is [1], [11111111] is output. Therefore, when the superimposed image GM is input to the seventh color palette Q7, the same data as the seventh frame image G7 is output.

FIG. 16 shows output data output from the eighth color palette Q8 with respect to input data at each position in FIG. In the 8th color palette Q8, the least significant digit (1st bit) of the input data is

If [0], then [000
000000] is output and the least significant digit of the input data is [1]
If so, [11111111] is output. Therefore, when the superimposed image GM is input to the eighth color palette Q8, the same data as the eighth frame image G8 is output.

FIG. 17 shows the overall processing procedure of the random dot test by the CPU 11.

First, a screen for allowing the inspector to set the presentation time T of the stereoscopic index image is displayed on the 2D display 19 (step 1). Here, it is assumed that, for example, three types of time T1, T2, T3 (T1>T2> T3) can be set. For example, T1
Is 1.0 second, T2 is 0.5 second, and T3 is 0.
1 second. In the visual acuity test, similarly to the case where the recognition target characters are designated in order from the largest character, the display time is normally set in the order of the presentation time of the stereoscopic index image.

Based on this screen, when the inspector sets the presentation time of the stereoscopic index image (step 2), the set value is stored in the memory 13 (step 3).

Next, the first inspection image display processing according to the set time is performed based on the superimposed image of the right-facing stereoscopic index image (step 4). In the case where the inspected person can recognize the stereoscopic index image in the first inspection image display processing, the inspected person notifies the inspected person of the recognized stereoscopic index image.

When the first inspection image display processing is completed,
The second inspection image display process is performed according to the set time based on the superimposed image of the downward stereoscopic index image (step 5). When the inspected person can recognize the stereoscopic index image in the second inspection image display processing,
The inspector is informed of the recognized stereoscopic index image.

When the second inspection image display processing is completed,
A third inspection image display process is performed according to the set time based on the superimposed image on the left-sided stereoscopic index image (step 6). In the case where the person to be inspected can recognize the stereoscopic index image in the third image display process for inspection,
The inspector is informed of the recognized stereoscopic index image.

Since the first inspection image display processing, the second inspection image display processing, and the third inspection image display processing differ only in the superimposed image transferred to the frame memory 16, the first inspection image display processing is different from the first inspection image display processing. Only the inspection image display process will be described in detail.

FIG. 18 shows the overall procedure of the first inspection image display processing in step 4 of FIG.

First, for a predetermined time, for example, 1 to 2 seconds, a 3D moving image consisting of only random dot patterns is displayed.
A random dot moving image display process for displaying on the display device 2 is performed (step 11).

Next, the stereoscopic index image display process for displaying the three-dimensional image including the stereoscopic index image on the 3D display device 2 is performed for the time corresponding to the set presentation time (step 12).

When the series of display processing consisting of step 11 and step 12 has been executed a predetermined number N of times (YES in step 13), the first inspection image display processing this time ends.

FIG. 19 shows the detailed procedure of the random dot moving image display processing in step 11 of FIG.

First, the superimposed image GM relating to the stereoscopic index image facing rightward from the hard disk 12 is displayed in the frame memory 16
(Step 21).

Next, the first color palette Q1 is transferred to the color palette section 18 (step 22). As a result, the superimposed image GM stored in the frame memory 16
And the first color palette Q1 output the same data as the first frame image G1 from the color palette unit 18, and the 3D display device 2 via the D / A converter 20.
Sent to. Therefore, the first frame image G1, that is, the image including only the first random dot pattern is displayed.

Next, the second color palette Q2 is transferred to the color palette section 18 (step 23). As a result, the second frame image G2, that is, the image including only the second random dot pattern is displayed.

Next, the third color palette Q3 is transferred to the color palette section 18 (step 24). As a result, the third frame image G3, that is, an image including only the third random dot pattern is displayed.

Next, the fourth color palette Q4 is transferred to the color palette section 18 (step 25). As a result, the fourth frame image G4, that is, the image including only the fourth random dot pattern is displayed.

When the series of steps 22 to 25 are repeated until the number of executions of the series of steps 22 to 25 reaches a predetermined number M of times, the result in step 26 is YES and the random dot moving image is displayed. The image display process ends.

FIG. 20 shows a detailed procedure of the stereoscopic index image display processing of step 12 of FIG. 18 when the time T1 is set.

First, the fifth color palette Q5 is transferred to the color palette section 18 (step 31). As a result, the superimposed image GM stored in the frame memory 16
And the fifth color palette Q5, the same data as the fifth frame image G5 is output from the color palette unit 18, and the 3D display device 2 is output via the D / A converter 20.
Sent to. Therefore, the fifth frame image G5, that is, the background composed of the fifth random dot pattern
The image in which the first three-dimensional index image composed of the random dot pattern P9 is floated is displayed.

Next, the sixth color palette Q6 is transferred to the color palette section 18 (step 32). As a result, the image in which the second stereoscopic index image including the tenth random dot pattern P10 is floated on the sixth frame image G6, that is, the background including the sixth random dot pattern is displayed.

Next, the seventh color palette Q7 is transferred to the color palette section 18 (step 33). As a result, an image in which the third stereoscopic index image including the eleventh random dot pattern P11 is floated on the background including the seventh frame image G7, that is, the seventh random dot pattern is displayed.

Next, the eighth color palette Q8 is transferred to the color palette section 18 (step 34). As a result, an image in which the fourth stereoscopic index image including the twelfth random dot pattern P12 is floated on the eighth frame image G8, that is, the background including the eighth random dot pattern is displayed.

When the series of processes of steps 31 to 34 is repeated until the number of times of execution of the series of processes of steps 31 to 34 reaches a predetermined number of times L, for example, twice, YES is obtained at step 35. The three-dimensional index image display process ends.

When the presentation time T2 is set,
The predetermined number of times L becomes 1. That is, the above steps 31 to 3
The series of processes of 4 is executed only once.

When the presentation time T3 is set,
The three-dimensional index image display process includes only the process of step 31. That is, in the stereoscopic index image display process when the presentation time T3 is set, the fifth color palette Q5 is transferred to the color palette unit 18. Therefore, in this case, a fifth frame image G5, that is, an image for one frame in which the stereoscopic index image composed of the ninth random dot pattern P9 is floated on the background composed of the fifth random dot pattern is formed. It will only be displayed.

As described above, in the first inspection image processing, the color palette is switched by the CPU 11 so that the random dot moving image and the random dot moving image are used. It is possible to switch between and display an image (stereoscopic index image) in which a stereoscopic index image composed of random dots appears on the background. That is, in this embodiment, the random dot moving image and the stereoscopic index image can be switched and displayed by merely rewriting the contents of the color palette portion without rewriting the contents of the frame memory. As a result, switching between the random dot moving image and the stereoscopic index image can be performed smoothly and at high speed. Further, the load on the CPU 11 is also reduced.

In the random dot test, the background and the stereoscopic index image are random dot images so that the stereoscopic index image is not recognized when the image displayed on the 3D display device 2 is observed with only one eye. This is because

In the above embodiment, the parallax barrier type display device is used as the 3D display device, but other 3D display devices such as the lenticular type without glasses may be used. As the 3D display device, a 3D display device that uses polarized glasses and liquid crystal shutter glasses together may be used.

In the above embodiment, the frame images G1 to G8.
Although the display image corresponding to was a black and white display,
The display images corresponding to the frame images G1 to G8 can be displayed in color by changing the contents of the color palettes Q1 to Q8.

That is, instead of the first to eighth color palettes Q1 to Q8 shown in FIGS. 9 to 16, FIGS.
The display images corresponding to the frame images G1 to G8 can be displayed in color by using the first to eighth color palettes S1 to S8 shown in FIG.

The first to eighth color palettes S1 to S8 shown in FIGS. 21 to 28 are the first to eighth color palettes shown in FIGS.
Data "0" of the color palettes Q1 to Q8 are replaced with RGB data each consisting of 8 bits of RGB corresponding to the color A, and data "255" corresponding to each RGB of 8 corresponding to the color B.
It is replaced with RGB data consisting of bits.

For color A and color B, R, G, and B are designated within the range of "0" to "255", respectively.
It can be set freely. For example, the color A is set to blue (R = "0", B = "255", G = "0"), and the color B is yellow (R = "255", B = "0", G).
= “255”).

When the superimposed image GM is input to the first color palette S1, the black dots in the first frame image G1 are replaced with the data corresponding to the color A, and the white dots are replaced with the data corresponding to the color B, respectively. The output data is output.

When the superimposed image GM is input to the second color palette S2, the black dots in the second frame image G2 are replaced with the data corresponding to the color A, and the white dots are replaced with the data corresponding to the color B, respectively. The output data is output.

When the superimposed image GM is input to the third color palette S3, the black dots in the third frame image G3 are replaced with the data corresponding to the color A, and the white dots are replaced with the data corresponding to the color B, respectively. The output data is output.

When the superimposed image GM is input to the fourth color palette S4, black dots in the fourth frame image G4 are replaced with data corresponding to color A, and white dots are replaced with data corresponding to color B, respectively. The output data is output.

When the superimposed image GM is input to the fifth color palette S5, the black dots in the fifth frame image G5 are replaced with the data corresponding to the color A, and the white dots are replaced with the data corresponding to the color B, respectively. The output data is output.

When the superimposed image GM is input to the sixth color palette S6, black dots in the sixth frame image G6 are replaced with data corresponding to color A, and white dots are replaced with data corresponding to color B, respectively. The output data is output.

When the superimposed image GM is input to the seventh color palette S7, the black dots in the seventh frame image G7 are replaced with the data corresponding to the color A, and the white dots are replaced with the data corresponding to the color B, respectively. The output data is output.

When the superimposed image GM is input to the eighth color palette S8, the black dots in the eighth frame image G8 are replaced with the data corresponding to the color A, and the white dots are replaced with the data corresponding to the color B, respectively. The output data is output.

[0095]

According to the present invention, a new random dot test can be performed. Further, according to the present invention, it is possible to smoothly and quickly switch between a background image formed of only random dots and a three-dimensional image having a stereoscopic index image formed of random dots.

[Brief description of drawings]

FIG. 1 is an external view showing the external appearance of a stereoscopic vision inspection device.

FIG. 2 is a block diagram showing a configuration of a stereoscopic vision inspection device.

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

FIG. 4 is a schematic diagram showing 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 showing an example of an image displayed on a 3D display device during a random dot test.

FIG. 6 is a schematic diagram showing an example of a stereoscopic index image.

FIG. 7 is a schematic diagram showing eight frame images that are the basis of generating a superimposed image.

FIG. 8 is a table showing input data of “1” to “255”.

9 is a table showing output data output from the first color palette Q1 with respect to input data at each position in FIG.

10 is a table showing output data output from the second color palette Q2 with respect to input data at each position in FIG.

11 is a table showing output data output from the third color palette Q3 with respect to input data at each position in FIG.

12 is a table showing output data output from the fourth color palette Q4 with respect to input data at each position in FIG.

13 is a table showing output data output from the fifth color palette Q5 with respect to input data at each position in FIG.

14 is a table showing output data output from the sixth color palette Q6 with respect to input data at each position in FIG.

15 is a table showing output data output from a seventh color palette Q7 for input data at each position in FIG.

16 is a table showing output data output from an eighth color palette Q8 with respect to input data at each position in FIG.

FIG. 17 is a flowchart showing an overall processing procedure performed during a random dot test.

FIG. 18 is a flowchart showing a detailed procedure of a first inspection image display process in step 4 of FIG.

19 is a flowchart showing a detailed procedure of a random dot moving image display process in step 11 of FIG.

20 is a flowchart showing a detailed procedure of a stereoscopic index image display process in step 12 of FIG.

21 is a table showing output data output from the first color palette S1 with respect to input data at each position in FIG.

22 is a table showing output data output from the second color palette S2 with respect to input data at each position in FIG.

23 is a table showing output data output from the third color palette S3 with respect to input data at each position in FIG.

24 is a table showing output data output from the fourth color palette S4 with respect to input data at each position in FIG.

25 is a table showing output data output from the fifth color palette S5 with respect to input data at each position in FIG.

26 is a table showing output data output from the sixth color palette S6 with respect to input data at each position in FIG.

27 is a table showing output data output from the seventh color palette S7 with respect to input data at each position in FIG.

28 is a table showing output data output from the eighth color palette S8 with respect to input data at each position in FIG.

[Explanation of symbols]

1 personal computer 2 3D display device 11 CPU 12 hard disk 13 memory 14 Input device 15, 16 frame memory 17, 20 D / A converter 18 Color palette section 19 2D display

─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Takashi Ikeda 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Haruo Isono 1-10-11 Kinuta, Setagaya-ku, Tokyo (56) Reference JP-A-9-98949 (JP, A) JP-A-1-129829 (JP, A) JP-A-3-228731 (JP, A) JP-A-6- 254051 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61B 3/00-3/18

Claims (12)

(57) [Claims] 1. At least one frame image composed of at least two kinds of frame images composed of random dot pattern images different from each other, a background image composed of random dot patterns, and a stereoscopic index image composed of random dot patterns. Each frame image is represented by pixel data having a value of 0 and pixel data having a value of 1 in only one bit position, and the bit position having a value of 1 is between the frame images. , Which are different from each other, are superposed to generate one superposed image, and a plurality of types of conversion tables for obtaining an output image from the superposed image are switched, so that a moving image including only random dot patterns and a stereoscopic index are generated. A stereoscopic inspection method for switching between a three-dimensional image including an image and displaying the image on a three-dimensional display device. 2. A background image composed of a random dot pattern and a stereoscopic index image composed of a random dot pattern, wherein the random dot patterns of the background image are different from each other and the random dot patterns of the stereoscopic index image are different from each other. It consists of two types of frame images and at least two types of frame images composed of random dot pattern images having different patterns. Each frame image has pixel data with a value of 0 and only one bit position has a value of 1. A plurality of pixels for generating an output image from the superimposed image by superimposing the pixel images represented by a certain pixel data and having bit values of 1 that are different between the frame images Only the random dot pattern can be created by switching the conversion table for each type. Images and stereoscopic vision test method for displaying a three-dimensional display device by switching between the three-dimensional image including a stereoscopic index image. 3. Each conversion table outputs data corresponding to 1 only when the value of one bit position determined for each conversion table among the bits of the input pixel data is 1. The stereoscopic inspection method according to any one of claims 1 and 2. 4. Each conversion table outputs a predetermined first color data when the value of one bit position determined for each conversion table among the respective bits of the input pixel data is 1, and the conversion is performed. 3. The stereoscopic view according to claim 1, wherein when the value of one bit position determined for each table is not 1, the predetermined second color data different from the first color data is output. Inspection method. 5. At least one of at least two types of frame images composed of random dot pattern images having different patterns, a background image composed of random dot patterns, and a stereoscopic index image composed of random dot patterns. Each frame image is represented by pixel data having a value of 0 and pixel data having a value of 1 in only one bit position, and the bit position having a value of 1 is between the frame images. And a moving image composed of only random dot patterns by switching a plurality of kinds of conversion tables for obtaining an output image from the superimposed image When,
A stereoscopic vision inspection apparatus comprising: means for switching between a three-dimensional image including a three-dimensional index image and displaying on a three-dimensional display device. 6. A background image having a random dot pattern and a stereoscopic index image having a random dot pattern, wherein the random dot patterns of the background image are different from each other and the random dot patterns of the stereoscopic index image are different from each other. It consists of two types of frame images and at least two types of frame images composed of random dot pattern images having different patterns. Each frame image has pixel data with a value of 0 and only one bit position has a value of 1. A unit for storing in the frame memory one superposed image in which bit images represented by certain pixel data and having a value of 1 and different in each frame image are superposed, and an output image from the superposed image. By switching between multiple types of conversion tables to obtain A stereoscopic vision inspection apparatus comprising: a means for switching between a moving image composed of only a dot pattern and a three-dimensional image including a three-dimensional index image to display the three-dimensional display device. 7. Each conversion table outputs data corresponding to 1 only when the value of one bit position determined for each conversion table is 1 in each bit of input pixel data. The stereoscopic vision inspection apparatus according to any one of claims 5 and 6. 8. Each conversion table outputs a predetermined first color data when the value of one bit position defined for each conversion table is 1 in each bit of the input pixel data, and the conversion table outputs the converted first color data. when the value of one bit position determined for each table is not 1 according to any of the der Ru請 Motomeko 5 and 6 outputs a different predetermined second color data from the first color data Stereoscopic inspection device . 9. At least one of at least two types of frame images composed of random dot pattern images having different patterns, a background image composed of random dot patterns, and a stereoscopic index image composed of random dot patterns. Each frame image is represented by pixel data having a value of 0 and pixel data having a value of 1 in only one bit position, and the bit position having a value of 1 is between the frame images. In the step of storing one superposed image in which different ones are superposed on each other in the frame memory, and by switching a plurality of types of conversion tables for obtaining an output image from the superposed image, a moving image including only random dot patterns And a three-dimensional image including a three-dimensional index image are switched and displayed on a three-dimensional display device. A computer-readable recording medium that records a stereoscopic inspection program for executing the step of performing. 10. A background image composed of a random dot pattern and a stereoscopic index image composed of a random dot pattern, wherein the random dot patterns of the background image are different from each other and the random dot patterns of the stereoscopic index image are different from each other. It consists of two types of frame images and at least two types of frame images composed of random dot pattern images having different patterns. Each frame image has pixel data with a value of 0 and only one bit position has a value of 1. A step of storing in the frame memory one superposed image in which bit images represented by certain pixel data and having a bit position of 1 and different from each other in the respective frame images are superposed, and an output image from the superposed image is output. By switching multiple types of conversion tables to obtain A computer-readable recording medium recording a stereoscopic vision inspection program for executing a step of switching a moving image composed of only random dot patterns and a three-dimensional image including a three-dimensional index image to display the three-dimensional display device. 11. Each conversion table outputs data corresponding to 1 only when the value of one bit position determined for each conversion table is 1 in each bit of input pixel data. A computer-readable recording medium recording the stereoscopic inspection program according to any one of claims 9 and 10. 12. Each conversion table outputs a predetermined first color data when the value of one bit position defined for each conversion table is 1 in each bit of the input pixel data, and the conversion is performed. 11. The stereoscopic vision according to claim 9, wherein when the value of one bit position defined for each table is not 1, predetermined second color data different from the first color data is output. A computer-readable recording medium recording an inspection program.