CN112053781B - Dynamic and static stereoscopic vision testing method and terminal - Google Patents
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Abstract
The invention relates to the technical field of computers, aims to solve the problem of low accuracy of the existing stereoscopic vision testing method, and provides a dynamic and static stereoscopic vision testing method and a terminal, wherein the technical scheme is summarized as follows: receiving a preset stereoscopic vision speed and a preset parallax value, and generating a stereoscopic vision test image; receiving first test information, generating a first stereoscopic vision test result, and if the first stereoscopic vision test result is qualified, adjusting the parallax value of the appointed sighting target in a step manner, receiving second test information, and generating a second stereoscopic vision test result; if the second stereoscopic vision test result is qualified, continuously increasing the parallax value of the appointed visual target from zero to a preset parallax value, adjusting the parallax value of the appointed visual target to zero, continuously increasing the parallax value of the appointed visual target from zero to the preset parallax value, and controlling all visual targets to perform random horizontal movement in the direction by the circulation to receive third test information; and generating a stereoscopic vision test result according to the first test information, the second test information and the third test information.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a dynamic and static stereoscopic vision testing method and a terminal.
Background
The stereoscopic vision can be divided into a static stereoscopic vision and a dynamic stereoscopic vision according to whether the stimulation target contains motion information, and the stereoscopic vision function of a patient is generally evaluated clinically by adopting static stereoscopic examination, but objects in life are not always in a static state, such as driving, playing balls and avoiding an impact object, all depend on the dynamic stereoscopic vision function of human eyes, and the depth perception formed by dynamic stimulation is the dynamic stereoscopic vision. The relationship between dynamic and static stereo is an interesting problem, and some patients who are displayed as "stereo blinds" through static stereo assessment still have stereo perception in life and can even enjoy the stereo visual effect of 3D movies are often encountered clinically.
The greatest difference between the examination of dynamic stereo vision and static stereo vision is that dynamic stereo stimulus contains motion information, wherein the motion modes mainly comprise three types, and one type is the motion along a two-dimensional plane with constant parallax; the second is depth motion along the Z-axis by changing parallax; there is also fixed-point motion in which both parallax and position are constant, but the arrangement positions of random points are continuously updated, and studies have been made to show that information on depth motion contributes to the greatest extent to dynamic stereoscopic perception.
It has been found that the formation mechanism of a dynamic stereoscopic vision is different from that of a static stereoscopic vision, the formation of the static stereoscopic vision mainly depends on binocular parallax, and the formation mechanism of the dynamic stereoscopic vision further comprises two mechanisms of real-time variation of parallax (CDOT) and difference of binocular movement speed (IOVD) besides binocular parallax, so that more depth clues are provided for human eyes. The difference between the dynamic stereo and static stereo visual inspection modes and the neural mechanism makes the difference between the two stereo inspection results.
The current clinical static stereoscopic vision test is usually TNO test book, butterfly test book, frisby test book, synoptic camera and other modes, and can only test far and near static stereoscopic vision of a patient, but can not use the same test software to determine the dynamic and static stereoscopic vision of a subject, and the clinical current evaluation of the stereoscopic vision of the subject only refers to the static stereoscopic vision, so that the test accuracy is not high.
Disclosure of Invention
The invention aims to solve the problem of low accuracy of the existing stereoscopic vision testing method and provides a dynamic and static stereoscopic vision testing method and a terminal.
The technical scheme adopted by the invention for solving the technical problems is as follows: the dynamic and static stereoscopic vision testing method comprises the following steps:
step 1, a computer system receives preset stereoscopic vision speed and parallax value, and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of optotypes;
step 2, the computer system receives first test information, generates a first stereoscopic vision test result according to the first test information, adjusts the parallax value of the designated sighting target of the stereoscopic vision test image step by step if the first stereoscopic vision test result is qualified, and receives second test information after each step adjustment of the parallax value, and generates a second stereoscopic vision test result according to the second test information;
step 3, if the second stereoscopic vision test result is qualified, continuously increasing the parallax value of the appointed sighting target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the appointed sighting target to zero after increasing to the preset parallax value, continuously increasing the parallax value of the appointed sighting target from zero to the preset parallax value according to the preset stereoscopic vision speed, and controlling all sighting targets in the stereoscopic vision test image to perform random horizontal movement in direction according to the cycle, wherein the computer system receives third test information;
and 4, generating a stereoscopic vision test result according to the first test information, the second test information and the third test information.
Further, in step 1, the stereoscopic vision test image includes four optotypes, the four optotypes are distributed on the upper, lower, left and right sides of the stereoscopic vision test image, each optotype is formed by randomly distributing a plurality of square blocks formed by random points, the diameter of each optotype is 1 °, and the distance between the center of each optotype and the center of the screen of the computer system is 1.5 °.
Further, in step 2, the step adjustment stereoscopic vision test image specifies a parallax value of the optotype, which includes: sequentially taking one of the four optotypes as a designated optotype, and adjusting the parallax value of the designated optotype in a step manner; after each time the designated optotype and the step adjustment parallax value are replaced, the computer system receives second test information.
Further, in step 2, four optotypes of the same parallax ladder correspond to four pieces of second test information, and when a test result corresponding to at least three pieces of second test information is qualified, the next parallax ladder is entered.
Further, the computer system obtains the first test information through the number keys of the keyboard, and obtains the second test information and the third test information through the direction keys of the keyboard.
Further, the step 3 further includes: if the second stereoscopic vision test result is qualified, sequentially taking one of the four targets as a designated target, continuously increasing the parallax value of the designated target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the designated target to zero after increasing to the preset parallax value, continuously increasing the parallax value of the designated target from zero to the preset parallax value according to the preset stereoscopic vision speed, and controlling all targets in the stereoscopic vision test image to perform random horizontal movement in direction according to the cycle; after each replacement of the designated optotype, the computer system receives a third test message.
Further, in step 4, the computer system calculates the accuracy and the stereoscopic vision sharpness threshold according to the first test information, the second test information and the third test information, and generates a stereoscopic vision test result.
Further, the method further comprises the following steps: and respectively counting time information from the change of the stereoscopic vision test image to the receipt of the first test information, the second test information and the third test information.
Further, the preset stereoscopic speed is 27'/S.
The invention also provides a terminal, which comprises a processor, a memory and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more programs in the memory to implement the steps of the dynamic and static stereoscopic testing method.
The beneficial effects of the invention are as follows: the dynamic and static stereoscopic vision testing method and the terminal can simultaneously test dynamic and static stereoscopic vision of a subject under the same testing condition, increase the comparability of the two stereoscopic vision, have reference value and credibility for clinically evaluating the stereoscopic vision state of the subject, and provide powerful guarantee for smooth expansion of clinical stereoscopic vision testing and inspection.
Drawings
FIG. 1 is a schematic flow chart of a dynamic and static stereoscopic vision testing method according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a stereoscopic test image according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention aims to provide a method and a terminal for simultaneously testing dynamic and static stereoscopic vision of a subject under the same test condition, wherein the technical conception is as follows: step 1, a computer system receives preset stereoscopic vision speed and parallax value, and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of optotypes; step 2, the computer system receives first test information, generates a first stereoscopic vision test result according to the first test information, adjusts the parallax value of the designated sighting target of the stereoscopic vision test image step by step if the first stereoscopic vision test result is qualified, and receives second test information after each step adjustment of the parallax value, and generates a second stereoscopic vision test result according to the second test information; step 3, if the second stereoscopic vision test result is qualified, continuously increasing the parallax value of the appointed sighting target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the appointed sighting target to zero after increasing to the preset parallax value, continuously increasing the parallax value of the appointed sighting target from zero to the preset parallax value according to the preset stereoscopic vision speed, and controlling all sighting targets in the stereoscopic vision test image to perform random horizontal movement in direction according to the cycle, wherein the computer system receives third test information; and 4, generating a stereoscopic vision test result according to the first test information, the second test information and the third test information.
Specifically, the subject performs a stereoscopic test after performing a basic ocular examination, and is required to ensure that the test is performed in a state of fully receiving refractive correction. Before testing, inputting preset stereoscopic vision speed and parallax value into the computer system. Firstly, carrying out binocular fusion capability test, putting on split vision glasses by a subject, fixing the head position at a position of 3 meters, directly viewing a stereoscopic vision test image of a test display screen, executing a corresponding program by a computer system according to test information input by the subject, running a test picture, receiving the test information input by the subject for multiple times in the process of running the test picture by the computer system, gradually controlling the stereoscopic vision test image to change by the computer system, respectively carrying out binocular fusion function, static stereoscopic vision test and dynamic stereoscopic vision test, and finally, generating a stereoscopic vision test result by the computer system according to all the test information.
Examples
The method for testing the dynamic and static stereoscopic vision according to the embodiment of the invention, as shown in fig. 1, comprises the following steps:
step S1, a computer system receives a preset stereoscopic vision speed and a preset parallax value, and a stereoscopic vision test image is generated, wherein the stereoscopic vision test image comprises a plurality of optotypes;
in the embodiment of the present invention, as shown in fig. 2, the stereo vision test image includes four optotypes, where the four optotypes are distributed on the top, bottom, left and right of the stereo vision test image, each optotype is formed by randomly distributing a plurality of squares formed by random points, the diameter of each optotype is 1 °, and the distance between the center of each optotype and the center of the screen of the computer system is 1.5 °.
Wherein each optotype is formed by randomly distributing a plurality of squares formed by random points, the corresponding size of the random points is 3', the density of the random distribution is 25%, and the visual angle formed by each pixel to human eyes at the test distance is 18'; the parallax is measured in the range of 35 'to 1500'.
The subject performs a stereoscopic test after performing a basic ocular examination, and is required to ensure that the test is accepted in a state of full refractive correction. Firstly, carrying out binocular fusion capability test, wherein a subject wears split vision glasses, fixing the head position at a position of 3 meters, and directly viewing four optotypes on the test display screen, wherein the left and right optotypes are visible for both eyes, the upper optotype is visible for only the right eye, and the lower optotype is visible for only the left eye. If the fusion function of the eyes of the tested person is normal, 4 visual targets are visible, for example, only 3 visual targets are visible, the single eye inhibition is indicated, and if the tested person is double vision, 5 visual targets are visible.
After the computer system generates the stereoscopic vision test image, the subject can input first test information through the number keys of the keyboard, and the first test information is the number of visual targets seen by the subject.
Step S2, a computer system receives first test information, a first stereoscopic vision test result is generated according to the first test information, if the first stereoscopic vision test result is qualified, the parallax value of a designated sighting target of the stereoscopic vision test image is adjusted in steps, after each step adjustment of the parallax value, the computer system receives second test information, and a second stereoscopic vision test result is generated according to the second test information;
after the computer system receives the first test information sent by the subject, judging whether the binocular fusion function of the subject is normal, if not, exiting the test program, and if so, performing a static stereoscopic vision test.
The specific flow of static stereoscopic vision test can be: the computer system sequentially takes one of the four optotypes as a designated optotype, and adjusts the parallax value of the designated optotype in a step manner; after each time of replacing the appointed visual target and the step adjustment parallax value, the computer system receives second test information; and the four optotypes of the same parallax ladder correspond to four pieces of second test information, when the test result corresponding to at least three pieces of second test information is qualified, the next parallax ladder is entered, and otherwise, the test program is exited.
Specifically, the computer system repeats the measurement for 4 times at each parallax ladder, that is, performs the measurement for 4 times corresponding to four optotypes, the subject judges the optotype with parallax difference during each measurement, and inputs second test information through the direction key of the keyboard, wherein the second test information is the position information of the optotype with parallax difference, and in the 4-time measurement process of each parallax ladder, at least 3 answers are needed to enter the next parallax ladder at the position of the optotype with parallax difference.
Step S3, if the second stereoscopic vision test result is qualified, continuously increasing the parallax value of the appointed sighting target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the appointed sighting target to zero after increasing to the preset parallax value, continuously increasing the parallax value of the appointed sighting target from zero to the preset parallax value according to the preset stereoscopic vision speed, and controlling all sighting targets in the stereoscopic vision test image to perform random horizontal movement in direction according to the cycle, wherein the computer system receives third test information;
after the static stereoscopic vision test is completed, the dynamic stereoscopic vision test is performed, and in the embodiment of the invention, the specific flow is as follows: sequentially taking one of the four targets as a designated target, continuously increasing the parallax value of the designated target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the designated target to zero after the parallax value is increased to the preset parallax value, continuously increasing the parallax value of the designated target from zero to the preset parallax value according to the preset stereoscopic vision speed, and circulating the targets to enable the designated target to generate depth motion along the sagittal plane, and controlling all targets in the stereoscopic vision test image to perform random horizontal movement in direction; after each replacement of the designated optotype, the computer system receives a third test message.
Wherein the preset stereoscopic speed may be 27 "/S.
And when the test subject measures each time, judging the optotype with the depth movement, and inputting third test information through the direction key of the keyboard, wherein the third test information is the position information of the optotype with the depth movement.
And S4, generating a stereoscopic vision test result according to the first test information, the second test information and the third test information.
After the computer system runs the test picture, a stereoscopic vision test result is generated according to the received test information, specifically, a correct rate and a stereoscopic vision sharpness threshold value are calculated according to the first test information, the second test information and the third test information, and a stereoscopic vision test result is generated. Wherein the stereoscopic sharpness threshold is the minimum disparity value recognizable to the subject.
Preferably, the embodiment of the present invention further includes: and respectively counting time information from the change of the stereoscopic vision test image to the receipt of the first test information, the second test information and the third test information. In practical use, the response time of the subject can be obtained according to the time information for the tester to record and analyze data.
Based on the above technical solution, the embodiment of the present invention further provides a terminal, as shown in fig. 3, where the terminal includes a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is used for executing one or more programs in the memory to realize the steps of the dynamic and static stereoscopic vision testing method.
It can be understood that, since the terminal according to the embodiment of the present invention is a terminal for implementing the dynamic and static stereoscopic vision testing method according to the embodiment, for the terminal disclosed in the embodiment, since the terminal corresponds to the method disclosed in the embodiment, the description is simpler, and the relevant points refer to the part of the description of the method.
Claims (10)
1. The dynamic and static stereoscopic vision testing method is characterized by comprising the following steps of:
step 1, a computer system receives preset stereoscopic vision speed and parallax value, and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of optotypes;
step 2, the computer system receives first test information, generates a first stereoscopic vision test result according to the first test information, adjusts the parallax value of the designated sighting target of the stereoscopic vision test image step by step if the first stereoscopic vision test result is qualified, and receives second test information after each step adjustment of the parallax value, and generates a second stereoscopic vision test result according to the second test information;
step 3, if the second stereoscopic vision test result is qualified, continuously increasing the parallax value of the appointed sighting target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the appointed sighting target to zero after increasing to the preset parallax value, continuously increasing the parallax value of the appointed sighting target from zero to the preset parallax value according to the preset stereoscopic vision speed, and controlling all sighting targets in the stereoscopic vision test image to perform random horizontal movement in direction according to the cycle, wherein the computer system receives third test information;
and 4, generating a stereoscopic vision test result according to the first test information, the second test information and the third test information.
2. The method of claim 1, wherein in step 1, the stereoscopic vision test image includes four optotypes, the four optotypes are distributed on the upper, lower, left and right sides of the stereoscopic vision test image, each optotype is formed by randomly distributing a plurality of squares formed by random points, the diameter of each optotype is 1 °, and the distance between the center of each optotype and the center of the screen of the computer system is 1.5 °.
3. The method of dynamic and static stereoscopic vision testing according to claim 2, wherein in step 2, the step-adjusting the parallax value of the stereoscopic vision test image specified optotype comprises: sequentially taking one of the four optotypes as a designated optotype, and adjusting the parallax value of the designated optotype in a step manner; after each time the designated optotype and the step adjustment parallax value are replaced, the computer system receives second test information.
4. The method of claim 3, wherein in the step 2, four optotypes of the same parallax ladder correspond to four second test information, and the next parallax ladder is entered only when at least three of the second test information corresponds to a qualified test result.
5. The method of claim 3, wherein the computer system obtains the first test information through a number key of a keyboard, and obtains the second test information and the third test information through a direction key of the keyboard.
6. The method of dynamic and static stereoscopic vision testing according to claim 3, wherein the step 3 further comprises: if the second stereoscopic vision test result is qualified, sequentially taking one of the four targets as a designated target, continuously increasing the parallax value of the designated target from zero to a preset parallax value according to the preset stereoscopic vision speed, adjusting the parallax value of the designated target to zero after increasing to the preset parallax value, continuously increasing the parallax value of the designated target from zero to the preset parallax value according to the preset stereoscopic vision speed, and controlling all targets in the stereoscopic vision test image to perform random horizontal movement in direction according to the cycle; after each replacement of the designated optotype, the computer system receives a third test message.
7. The method according to claim 6, wherein in step 4, the computer system calculates a correctness and a stereo vision sharpness threshold according to the first test information, the second test information and the third test information, and generates a stereo vision test result.
8. The dynamic and static stereoscopic vision testing method according to any one of claims 1 to 7, further comprising: and respectively counting time information from the change of the stereoscopic vision test image to the receipt of the first test information, the second test information and the third test information.
9. The method for dynamic and static stereoscopic vision testing according to any one of claims 1 to 7, wherein the preset stereoscopic vision speed is 27 "/S.
10. A terminal, wherein the terminal comprises a processor, a memory and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more programs in the memory to implement the steps of the dynamic and static stereoscopic testing method according to any one of claims 1-9.
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| CN113080839B (en) * | 2021-04-12 | 2022-02-11 | 广州市诺以德医疗科技发展有限公司 | Dynamic stereoscopic vision function evaluation system combined with eyeball motion training |
| CN113516683B (en) * | 2021-04-12 | 2023-10-10 | 广东视明科技发展有限公司 | Modeling method for evaluating influence of moving speed on stereoscopic vision |
| CN112866679B (en) * | 2021-04-23 | 2021-08-10 | 广东视明科技发展有限公司 | Multi-point stereoscopic vision detection method in motion state |
| CN116725473B (en) * | 2023-08-14 | 2023-11-10 | 北京大学第三医院（北京大学第三临床医学院） | Dynamic stereoscopic vision detection device and method |
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