CN115624314A - Visual axis deviation checking device and method for binocular depth perception scene - Google Patents
Visual axis deviation checking device and method for binocular depth perception scene Download PDFInfo
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Abstract
The invention provides a visual axis deviation checking device of a binocular depth perception scene, which comprises a depth perception space scene construction module, a checking target generator, a checking target controller, a processing terminal, a display module and checking equipment, wherein the checking target generator is used for generating a checking target; the invention also provides a visual axis deviation checking method of the binocular depth perception scene, which is realized based on the visual axis deviation checking device of the binocular depth perception scene. The invention provides a visual axis deviation checking device and method for a binocular depth perception scene, which are used for realizing the perception visual axis deviation checking of a subject in a natural binocular state (including plane and depth perception), and solving the problem that the perception visual axis deviation appearing in depth cannot be checked at present.
Description
Technical Field
The invention relates to the technical field of visual axis deviation checking, in particular to a visual axis deviation checking device and method for a binocular depth perception scene.
Background
Binocular visual functions include gaze stabilization, suppression, crowding, binocular disparity, and binocular imbalance. The ability to maintain a stable fixation is an essential aspect of good visual function.
During normal fixation, the eye continues to perform involuntary physiological micro-movements, including small excursions, micro-jumps and tremors. When there is relative movement between the vision and the object, the normal-sighted person can stabilize the direction in which they are gazing by continuously moving their eyes, thereby finally maintaining their visual acuity. However, if the person is visually handicapped, when the person faces such a relative movement, the moving object and the stationary object may be blurred, and sometimes even the stationary object may feel moving, and a deviation of the perceptual visual axis occurs, that is, the image seen by the human eye is shifted from the fovea position of the retinal image, so that the person cannot clearly see the object.
The instability of the gaze has an effect on the ability of a person to move, read, drive, etc. for example, in football or basketball, the instability of the gaze causes a poor control of the position of the ball (target) in the natural state (including planar and depth perception). However, currently, only the perceptual visual axis deviation appearing on the plane can be detected, and the perceptual visual axis deviation appearing on the depth cannot be detected, so that the problem of binocular visual function defect with unstable fixation is difficult to find, and the patient misses the optimal treatment period.
Disclosure of Invention
The invention provides a visual axis deviation checking device and method for a binocular depth perception scene, aiming at overcoming the technical defect that the perception visual axis deviation appearing in the depth cannot be checked at present.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a visual axis deviation checking device for a binocular depth perception scene comprises a depth perception space scene construction module, a checking target generator, a checking target controller, a processing terminal, a display module and checking equipment;
the depth perception space scene construction module is used for constructing a depth perception space scene and establishing a space coordinate system in the depth perception space scene;
the examination target generator is used for generating a first examination target and a second examination target in a depth perception space scene;
the inspection target controller is used for controlling the first inspection target or the second inspection target to move in a depth perception space scene and sending a confirmation signal to the processing terminal;
the processing terminal is used for respectively acquiring a space coordinate system, coordinate values of the central points of the first inspection target and the second inspection target at the initial time, and moving instructions and parameters of the first inspection target and the second inspection target from the depth perception space scene construction module, the inspection target generator and the inspection target controller, and obtaining the coordinate values of the first inspection target and the second inspection target when a confirmation signal is received through data processing; the device is also used for obtaining a perception visual axis deviation value of the subject according to the coordinate values of the first checking target and the second checking target when the confirmation signal is received and a preset algorithm;
the display module is used for displaying a depth perception space scene, a first checking target, a second checking target and a perception visual axis deviation value;
the examination equipment is used for assisting the subject to observe;
the output ends of the depth perception space scene construction module, the inspection target generator and the inspection target controller are respectively connected with the input end of the processing terminal, and the output end of the processing terminal is connected with the input end of the display module.
In the scheme, after the examinee wears the examination equipment, the first examination target or the second examination target is controlled by the examination target controller to move in the depth perception space scene until the first examination target and the second examination target are observed to be overlapped, and the perception visual axis deviation value of the examinee is obtained according to the coordinate values of the center points of the first examination target and the second examination target and a preset algorithm, so that the perception visual axis deviation examination of the two eyes of the examinee in a natural state (including plane and depth perception) is realized.
Preferably, the depth perception space scene construction module is further configured to construct a noise model; the noise model is used for stimulating the peripheral visual field of the subject and interfering the observation of the first examination target and the second examination target by the subject.
Preferably, the first inspection target and the second inspection target are not occluded with each other.
Preferably, the first examination target and the second examination target are two-dimensional images with different colors, and the first examination target and the second examination target generate a depth perception relationship due to color difference.
Preferably, one of the first and second inspection targets has a red color, and the other has a green or blue color.
Preferably, the inspection device comprises red green glasses and 3D spectral separation glasses.
Preferably, the perceptual visual axis deviation value comprises a first perceptual visual axis deviation value, a second perceptual visual axis deviation value and a third perceptual visual axis deviation value.
Preferably, the observation distance is 0.8m, 1.5m, 3m or 5m.
A visual axis deviation checking method of a binocular depth perception scene is realized based on a visual axis deviation checking device of the binocular depth perception scene, and comprises the following steps:
s1: constructing a depth perception space scene, establishing a space coordinate system in the depth perception space scene, enabling a subject to wear any one of examination devices, and initializing observation times i =0;
s2: generating a first checking target and a second checking target at random positions of a depth perception space scene, recording coordinate values of center points of the first checking target and the second checking target at the beginning, and enabling i = i +1;
s3: controlling, by the subject, the first examination target or the second examination target to move in the depth perception space scene through the examination target controller;
when a subject observes that a first check target or a second check target is overlapped in a depth perception space scene, sending a confirmation signal to a processing terminal through a check target controller, and acquiring coordinate values of the first check target and the second check target at the moment by the processing terminal;
s4: if the checking equipment worn by the testee is red and green glasses, obtaining a first perceptual visual axis deviation value and a second perceptual visual axis deviation value according to the coordinate values of the first checking target and the second checking target obtained in the step S3 and a preset algorithm;
if the examination equipment worn by the subject is 3D spectral separation glasses, obtaining a third perceptual visual axis deviation value according to the coordinate values of the first examination target and the second examination target obtained in the step S3 and a preset algorithm;
s5: judging whether i is equal to 2;
if yes, executing step S6;
if not, the subject wears another kind of examination equipment and returns to the step S2;
s6: and synthesizing the first perception visual axis deviation value, the second perception visual axis deviation value and the third perception visual axis deviation value to obtain the perception visual axis deviation of the subject in the natural state.
Preferably, the first perceptual visual axis deviation value corresponds to a lateral distance between the first examination target and the second examination target, the second perceptual visual axis deviation value corresponds to a longitudinal distance between the first examination target and the second examination target, and the third perceptual visual axis deviation value corresponds to a depth distance between the first examination target and the second examination target.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the invention provides a visual axis deviation checking device and a visual axis deviation checking method for a binocular depth perception scene, wherein after a subject wears checking equipment, a checking target controller is utilized to control a first checking target or a second checking target to move in the depth perception space scene until the first checking target and the second checking target are observed to be overlapped, a perception visual axis deviation value of the subject is obtained according to coordinate values of center points of the first checking target and the second checking target and a preset algorithm, and perception visual axis deviation checking of the two eyes of the subject in a natural state (including a plane and depth perception) is realized.
Drawings
FIG. 1 is a schematic diagram of the module connection of the present invention;
FIG. 2 is a diagram of an exemplary combination of a first inspection target, a second inspection target, and a noise model in accordance with the present invention;
FIG. 3 is a flow chart of the implementation steps of the technical solution of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1-2, a visual axis deviation inspection apparatus for a binocular depth perception scene includes a depth perception space scene construction module, an inspection target generator, an inspection target controller, a processing terminal, a display module and an inspection device; the depth perception space scene construction module is used for constructing a depth perception space scene and establishing a space coordinate system in the depth perception space scene; the examination target generator is used for generating a first examination target and a second examination target in a depth perception space scene; the inspection target controller is used for controlling the first inspection target or the second inspection target to move in a depth perception space scene and sending a confirmation signal to the processing terminal; the processing terminal is used for respectively acquiring a space coordinate system, coordinate values of the central points of the first inspection target and the second inspection target at the initial time, and moving instructions and parameters of the first inspection target and the second inspection target from the depth perception space scene construction module, the inspection target generator and the inspection target controller, and obtaining the coordinate values of the first inspection target and the second inspection target when a confirmation signal is received through data processing; the device is also used for obtaining a perception visual axis deviation value of the subject according to the coordinate values of the first checking target and the second checking target when the confirmation signal is received and a preset algorithm; the display module is used for displaying a depth perception space scene, a first checking target, a second checking target and a perception visual axis deviation value; the examination equipment is used for assisting the subject to observe; the output ends of the depth perception space scene construction module, the inspection target generator and the inspection target controller are respectively connected with the input end of the processing terminal, and the output end of the processing terminal is connected with the input end of the display module.
In the specific implementation process, after a test subject wears a test device, a test target controller is used for controlling a first test target or a second test target to move in a depth perception space scene until the first test target and the second test target are observed to coincide, a confirmation signal is sent to a processing terminal by the test target controller, a perception visual axis deviation value of the test subject is obtained according to coordinate values of center points of the first test target and the second test target during confirmation and a preset algorithm, and perception visual axis deviation detection of the test subject in a natural state (including plane and depth perception) of two eyes is achieved.
Example 2
A visual axis deviation checking device for a binocular depth perception scene comprises a depth perception space scene construction module, a checking target generator, a checking target controller, a processing terminal, a display module and checking equipment; the depth perception space scene construction module is used for constructing a depth perception space scene and establishing a space coordinate system in the depth perception space scene; the examination target generator is used for generating a first examination target and a second examination target in a depth perception space scene; the inspection target controller is used for controlling the first inspection target or the second inspection target to move in a depth perception space scene and sending a confirmation signal to the processing terminal; the processing terminal is used for respectively acquiring a space coordinate system, coordinate values of the central points of the first inspection target and the second inspection target at the initial time, and moving instructions and parameters of the first inspection target and the second inspection target from the depth perception space scene construction module, the inspection target generator and the inspection target controller, and obtaining the coordinate values of the first inspection target and the second inspection target when a confirmation signal is received through data processing; the system is also used for obtaining a perceptual visual axis deviation value of the subject according to a preset algorithm according to the coordinate values of the first checking target and the second checking target when the confirmation signal is received; the display module is used for displaying a depth perception space scene, a first checking target, a second checking target and a perception visual axis deviation value; the examination equipment is used for assisting the subject to observe; the output ends of the depth perception space scene construction module, the checking target generator and the checking target controller are respectively connected with the input end of a processing terminal, and the output end of the processing terminal is connected with the input end of the display module.
More specifically, the depth perception space scene construction module is further configured to construct a noise model; the noise model is used for stimulating the peripheral visual field of the subject and interfering the observation of the first examination target and the second examination target by the subject. As in fig. 2, the centrally located cross and circle are the first (second) and second (first) examination object, respectively, and the outside of the circle is a noise model of several motions.
More specifically, the first inspection target and the second inspection target are not occluded with each other.
More specifically, the first examination target and the second examination target are two-dimensional images with different colors, and the first examination target and the second examination target generate a depth perception relation due to color difference.
More specifically, either one of the first and second inspection targets has a red color, and the other one has a green or blue color.
More specifically, the inspection device includes red green glasses and 3D spectral separation glasses.
In a specific implementation process, the existing red-green glasses comprise a red lens and a green lens, the red lens and the green lens respectively filter light in a red waveband and light in a green waveband, and when a subject observes red-green/red-blue images through the red-green glasses, the left eye and the right eye can only observe images which are not filtered at the same time, so that the images observed by the left eye and the right eye at the same time are different. 3D spectral separation glasses (called as optical separation glasses for short) are products which present stereoscopic vision effect based on colorful diffraction technology and special holographic optical separation lenses. Changing the wavelength of the color refracts red light less than blue light, resulting in a difference between the red and blue images on the retina. The 3D spectral separation glasses can effectively enhance the optical separation aberration effect and present visual illusion on of colors at different positions, such as more prominent red series effect and more profound blue series effect.
More specifically, the perceptual visual axis deviation value includes a first perceptual visual axis deviation value, a second perceptual visual axis deviation value, and a third perceptual visual axis deviation value.
More specifically, the observation distance is 0.8m, 1.5m, 3m, or 5m.
In the specific implementation process, after a testee wears red and green glasses (3D spectral separation glasses), the first inspection target or the second inspection target is controlled by an inspection target controller to move in a depth perception space scene until the first inspection target and the second inspection target are observed to be overlapped, a confirmation signal is sent to a processing terminal by the inspection target controller, a first perception visual axis deviation value and a second perception visual axis deviation value (a third perception visual axis deviation value) of the testee are obtained according to coordinate values of central points of the first inspection target and the second inspection target in the confirmation process according to a preset algorithm, the first perception visual axis deviation value or the second perception visual axis deviation value of the testee is controlled by the inspection target controller to move in the depth perception space scene again after the testee changes into wearing the 3D spectral separation glasses (the red and green glasses), the third perception visual axis deviation value (a first perception visual axis deviation value and a second perception visual axis deviation value) of the testee is obtained according to the coordinate values of the first inspection target and the second inspection target in the confirmation process according to the preset algorithm; the first perception visual axis deviation value corresponds to the transverse distance between the first detection target and the second detection target, the second perception visual axis deviation value corresponds to the longitudinal distance between the first detection target and the second detection target, and the third perception visual axis deviation value corresponds to the depth distance between the first detection target and the second detection target; thereby realizing the detection of the deviation of the perception visual axis of the eyes of the subject in the natural state (including plane and depth perception).
In the specific implementation process, when the observation distance is 0.8m, a display module with a smaller display size, such as 6-6.5 inches, is generally selected; when the observation distance is 1.5m or 3m, a display module with a medium display size, such as 10-13 inches, is generally selected; when the observation distance is 5m, a larger display size of the display module, such as 32 inches, is generally selected. In addition, a technician can set a preset algorithm according to actual needs, for example, a proportional relationship between the coordinate distance of the space coordinate system and the perceptual visual axis deviation value is set, and the coordinate value difference value of the center points of the first examination target and the second examination target during confirmation is converted according to the proportional relationship to obtain the corresponding perceptual visual axis deviation value.
Example 3
As shown in fig. 3, a visual axis deviation checking method for a binocular depth perception scene is implemented by a visual axis deviation checking apparatus for a binocular depth perception scene, and includes the following steps:
s1: constructing a depth perception space scene, establishing a space coordinate system in the depth perception space scene, enabling a subject to wear any one of examination devices, and initializing observation times i =0;
s2: generating a first checking target and a second checking target at random positions of a depth perception space scene, recording coordinate values of center points of the first checking target and the second checking target at the beginning, and enabling i = i +1;
s3: controlling, by the subject, the first examination target or the second examination target to move in the depth perception space scene through the examination target controller;
when a subject observes that a first check target or a second check target is overlapped in a depth perception space scene, a confirmation signal is sent to a processing terminal through a check target controller, and the processing terminal acquires coordinate values of the first check target and the second check target at the moment;
s4: if the examination equipment worn by the examinee is red and green glasses, obtaining a first perceptual visual axis deviation value and a second perceptual visual axis deviation value according to the coordinate values of the first examination target and the second examination target obtained in the step S3 and a preset algorithm;
if the examination equipment worn by the subject is 3D spectral separation glasses, obtaining a third perceptual visual axis deviation value according to the coordinate values of the first examination target and the second examination target obtained in the step S3 and a preset algorithm;
s5: judging whether i is equal to 2;
if yes, executing step S6;
if not, the subject wears another kind of examination equipment and returns to the step S2;
s6: and synthesizing the first perception visual axis deviation value, the second perception visual axis deviation value and the third perception visual axis deviation value to obtain the perception visual axis deviation of the subject in the natural state.
More specifically, the first perceptual visual axis deviation value corresponds to a lateral distance between the first examination target and the second examination target, the second perceptual visual axis deviation value corresponds to a longitudinal distance between the first examination target and the second examination target, and the third perceptual visual axis deviation value corresponds to a depth distance between the first examination target and the second examination target.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The visual axis deviation checking device for the binocular depth perception scene is characterized by comprising a depth perception space scene building module, a checking target generator, a checking target controller, a processing terminal, a display module and checking equipment;
the depth perception space scene construction module is used for constructing a depth perception space scene and establishing a space coordinate system in the depth perception space scene;
the examination target generator is used for generating a first examination target and a second examination target in a depth perception space scene;
the inspection target controller is used for controlling the first inspection target or the second inspection target to move in a depth perception space scene and sending a confirmation signal to the processing terminal;
the processing terminal is used for respectively acquiring a space coordinate system, coordinate values of the central points of the first inspection target and the second inspection target at the initial time, and moving instructions and parameters of the first inspection target and the second inspection target from the depth perception space scene construction module, the inspection target generator and the inspection target controller, and obtaining the coordinate values of the first inspection target and the second inspection target when a confirmation signal is received through data processing; the device is also used for obtaining a perception visual axis deviation value of the subject according to the coordinate values of the first checking target and the second checking target when the confirmation signal is received and a preset algorithm;
the display module is used for displaying a depth perception space scene, a first checking target, a second checking target and a perception visual axis deviation value;
the examination equipment is used for assisting the subject to observe;
the output ends of the depth perception space scene construction module, the inspection target generator and the inspection target controller are respectively connected with the input end of the processing terminal, and the output end of the processing terminal is connected with the input end of the display module.
2. The apparatus for examining visual axis deviation of a binocular depth perception scene as claimed in claim 1, wherein the depth perception space scene constructing module is further configured to construct a noise model; the noise model is used for stimulating the peripheral visual field of the subject and interfering the observation of the first examination target and the second examination target by the subject.
3. The apparatus for examining visual axis deviation in a binocular depth perception scene according to claim 1, wherein the first examination target and the second examination target are not occluded from each other.
4. The apparatus of claim 3, wherein the first examination target and the second examination target are two-dimensional images with different colors, and the first examination target and the second examination target generate a depth perception relationship due to color difference.
5. The apparatus of claim 4, wherein one of the first and second examination targets is red and the other is green or blue.
6. The apparatus for examining visual axis deviation in binocular depth perception scene according to claim 5, wherein the examining device comprises red green glasses and 3D spectrum separation glasses.
7. The apparatus of claim 1, wherein the perceptual visual axis deviation value comprises a first perceptual visual axis deviation value, a second perceptual visual axis deviation value, and a third perceptual visual axis deviation value.
8. The apparatus for examining visual axis deviation in a binocular depth perception scene as claimed in claim 1, wherein the observation distance is 0.8m, 1.5m, 3m or 5m.
9. The visual axis deviation checking method for the binocular depth perception scene is characterized by comprising the following steps of:
s1: constructing a depth perception space scene, establishing a space coordinate system in the depth perception space scene, enabling a subject to wear any one of examination devices, and initializing observation times i =0;
s2: generating a first checking target and a second checking target at random positions of a depth perception space scene, recording coordinate values of center points of the first checking target and the second checking target at the beginning, and enabling i = i +1;
s3: controlling, by the subject, the first examination target or the second examination target to move in the depth perception space scene through the examination target controller;
when a subject observes that a first check target or a second check target is overlapped in a depth perception space scene, a confirmation signal is sent to a processing terminal through a check target controller, and the processing terminal acquires coordinate values of the first check target and the second check target at the moment;
s4: if the examination equipment worn by the examinee is red and green glasses, obtaining a first perceptual visual axis deviation value and a second perceptual visual axis deviation value according to the coordinate values of the first examination target and the second examination target obtained in the step S3 and a preset algorithm;
if the examination equipment worn by the subject is 3D spectral separation glasses, obtaining a third perceptual visual axis deviation value according to the coordinate values of the first examination target and the second examination target obtained in the step S3 and a preset algorithm;
s5: judging whether i is equal to 2;
if yes, executing step S6;
if not, the subject wears another kind of examination equipment and returns to the step S2;
s6: and synthesizing the first perception visual axis deviation value, the second perception visual axis deviation value and the third perception visual axis deviation value to obtain the perception visual axis deviation of the subject in the natural state.
10. The method of claim 9, wherein the first perceptual visual axis offset value corresponds to a lateral distance between the first object and the second object, the second perceptual visual axis offset value corresponds to a longitudinal distance between the first object and the second object, and the third perceptual visual axis offset value corresponds to a depth distance between the first object and the second object.
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| CN116958225A (en) * | 2023-09-19 | 2023-10-27 | 广东视明科技发展有限公司 | Depth perception detection method and system based on unidirectional glass virtual-real combination |
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| CN116958225A (en) * | 2023-09-19 | 2023-10-27 | 广东视明科技发展有限公司 | Depth perception detection method and system based on unidirectional glass virtual-real combination |
| CN116958225B (en) * | 2023-09-19 | 2023-11-28 | 广东视明科技发展有限公司 | Depth perception detection method and system based on unidirectional glass virtual-real combination |
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