CN112053781A - 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 that the existing stereoscopic vision testing method is low in accuracy, 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 to generate a first stereoscopic test result, if the first stereoscopic test result is qualified, adjusting the parallax value of the designated sighting target in a stepped manner, receiving second test information to generate a second stereoscopic test result; if the second stereoscopic vision test result is qualified, controlling the parallax value of the designated sighting target to be continuously increased from zero to a preset parallax value, adjusting the parallax value of the designated sighting target to be zero, then controlling the parallax value of the designated sighting target to be continuously increased from zero to the preset parallax value, and controlling all the sighting targets to horizontally move in random directions by the circulation, and receiving third test information; and generating a stereoscopic 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 static stereoscopic vision and dynamic stereoscopic vision according to whether a stimulation target contains motion information, the stereoscopic vision function of a patient is generally evaluated clinically by adopting static stereoscopic examination, but the living object is not always in a static state, for example, the dynamic stereoscopic vision function depends on human eyes when driving, playing a ball and avoiding a collision object, and the depth perception formed by the dynamic stimulation is the dynamic stereoscopic vision. The relationship between dynamic stereoscopic vision and static stereoscopic vision is a problem of interest, and it is often clinically encountered that some patients who show "stereo blind" through static stereoscopic evaluation still have stereoscopic perception in life, and even can enjoy the stereoscopic vision effect of 3D movies.
The biggest difference between the examination of dynamic stereoscopy and static stereoscopy is that the dynamic stereoscopic stimulus contains motion information, wherein the motion modes mainly comprise three types, one type is motion with constant parallax along a two-dimensional plane; the second is depth motion along the Z-axis by changing parallax; there is also a fixed point motion in which the parallax and the position are constant, but the arrangement position of random points is continuously updated, and there is a case where the degree of contribution of information for studying and displaying depth motion to dynamic stereoscopic perception is the greatest.
Research shows that the forming mechanisms of dynamic stereoscopic vision and static stereoscopic vision are different, the forming of the static stereoscopic vision mainly depends on binocular parallax, and the forming mechanism of the dynamic stereoscopic vision comprises two mechanisms of real-time parallax Change (CDOT) and binocular movement speed difference (IOVD) besides the binocular parallax, so that more depth clues are provided for human eyes. The difference between the dynamic stereo vision and the static stereo vision in the examination mode and the neural mechanism makes the two stereo examination results different.
The existing clinical static stereoscopy test methods usually include a TNO test book, a Butterfly test book, a Frisby test book, a synoptophore and the like, can only test far and near static stereoscopy of a patient, cannot use the same test software to measure dynamic and static stereoscopy of a subject, only refers to the static stereoscopy when clinically evaluating the stereoscopy of the subject, and is not high in test accuracy.
Disclosure of Invention
The invention aims to solve the problem that the existing stereoscopic vision testing method is low in accuracy, 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 a preset stereoscopic vision speed and a preset parallax value and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of sighting marks;
step 2, the computer system receives first test information, generates a first stereoscopic test result according to the first test information, if the first stereoscopic test result is qualified, the stereoscopic test image specifies the parallax value of the sighting target by step adjustment, after the parallax value is adjusted by step each time, the computer system receives second test information, and generates a second stereoscopic test result according to the second test information;
step 3, if the second stereoscopic vision test result is qualified, controlling the parallax value of the designated sighting target to be continuously increased from zero to a preset parallax value according to a preset stereoscopic vision speed, adjusting the parallax value of the designated sighting target to be zero after the parallax value is increased to the preset parallax value, controlling the parallax value of the designated sighting target to be continuously increased 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 horizontally move in random directions according to the circulation, wherein the computer system receives third test information;
and 4, generating a stereoscopic 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 side, the lower side, the left side and the right side 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 degree, and the distance between the center of each optotype and the center of the screen of the computer system is 1.5 degrees.
Further, in step 2, the step-adjusting the parallax value of the designated optotype of the stereoscopic testing image includes: sequentially taking one of the four sighting marks as an appointed sighting mark, and adjusting the parallax value of the appointed sighting mark in a stepped manner; after each time of changing the designated sighting target and adjusting the parallax value in a ladder way, the computer system receives second test information.
Further, in step 2, four optotypes of the same parallax step correspond to four second test information, and when the test result corresponding to at least three of the second test information is qualified, the next parallax step is entered.
Furthermore, the computer system acquires the first test information through a number key of the keyboard, and acquires the second test information and the third test information through a direction key of the keyboard.
Further, the step 3 further includes: if the second stereoscopic vision test result is qualified, one of the four visual targets is sequentially used as an appointed visual target, the parallax value of the appointed visual target is controlled to be continuously increased from zero to a preset parallax value according to a preset stereoscopic vision speed, the parallax value of the appointed visual target is adjusted to be zero after the parallax value is increased to the preset parallax value, the parallax value of the appointed visual target is controlled to be continuously increased from zero to the preset parallax value according to the preset stereoscopic vision speed, and all the visual targets in the stereoscopic vision test image are controlled to horizontally move in random directions in a circulating mode; the computer system receives a third test message after each replacement of the designated target.
Further, in step 4, the computer system calculates a precision rate and a stereoscopic acuity threshold according to the first test information, the second test information and the third test information, and generates a stereoscopic test result.
Further, the method also comprises the following steps: and respectively counting the time information from the change of the stereoscopic test image to the reception of the first test information, the second test information and the third test information.
Further, the preset stereoscopy 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 used for executing one or more programs in the memory so as to realize the steps of the dynamic and static stereoscopic vision testing method.
The invention has the beneficial effects that: the dynamic and static stereoscopic vision testing method and the terminal can simultaneously test the dynamic and static stereoscopic vision of the testee under the same testing condition, increase the contrast of two types of stereoscopic vision, have reference value and reliability for clinically evaluating the stereoscopic vision state of the testee, and provide powerful guarantee for the smooth development 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 present 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 the dynamic and static stereoscopic vision of a testee under the same test condition, and the technical concept is as follows: step 1, a computer system receives a preset stereoscopic vision speed and a preset parallax value and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of sighting marks; step 2, the computer system receives first test information, generates a first stereoscopic test result according to the first test information, if the first stereoscopic test result is qualified, the stereoscopic test image specifies the parallax value of the sighting target by step adjustment, after the parallax value is adjusted by step each time, the computer system receives second test information, and generates a second stereoscopic test result according to the second test information; step 3, if the second stereoscopic vision test result is qualified, controlling the parallax value of the designated sighting target to be continuously increased from zero to a preset parallax value according to a preset stereoscopic vision speed, adjusting the parallax value of the designated sighting target to be zero after the parallax value is increased to the preset parallax value, controlling the parallax value of the designated sighting target to be continuously increased 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 horizontally move in random directions according to the circulation, wherein the computer system receives third test information; and 4, generating a stereoscopic test result according to the first test information, the second test information and the third test information.
Specifically, the subject is subjected to a stereoscopic test after a basic ocular examination, which is guaranteed to be tested in a state of complete accommodation of the refractive correction. Before testing, inputting preset stereoscopic vision speed and parallax value into a computer system. The method comprises the steps of firstly carrying out binocular fusion capability test, enabling a subject to wear visual glasses, fixing a head position at a position of 3 meters, and directly viewing a stereoscopic 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 that the computer system runs the test picture, gradually controlling the stereoscopic test image to change by the computer system, enabling the stereoscopic test image to respectively carry out binocular fusion function, static stereoscopic test and dynamic stereoscopic test, and finally generating a stereoscopic test result by the computer system according to all test information.
Examples
The method for testing the dynamic and static stereoscopic vision, disclosed by the embodiment of the invention, as shown in figure 1, comprises the following steps of:
step S1, the computer system receives the preset stereoscopic vision speed and parallax value and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of sighting marks;
in the embodiment of the present invention, as shown in fig. 2, the stereoscopic testing image includes four visual targets, the four visual targets are distributed at the upper, lower, left and right sides of the stereoscopic testing image, each visual target is formed by randomly distributing a plurality of squares formed by random points, the diameter of each visual target is 1 °, and the distance between the center of each visual target and the center of the screen of the computer system is 1.5 °.
Each sighting mark is formed by randomly distributing a plurality of squares formed by random points, the corresponding size of the random points is 3 ', the randomly distributed density is 25%, and the visual angle formed by each pixel to human eyes in the testing distance is 18'; the parallax is measured over a range of 35 "to 1500".
The subjects were subjected to a stereoscopic test after a basic ocular examination, with the assurance that the test was performed in a state of complete accommodation of the refractive correction. Firstly, carrying out binocular fusion capability test, wherein a subject wears visual separation glasses, fixes a head position at a position of 3 meters, and directly views four visual targets of an upper visual target, a lower visual target, a left visual target and a right visual target of a test display screen, wherein the left visual target and the right visual target are visible in both eyes, the upper visual target is visible only in the right eye, and the lower visual target is visible only in the left eye. If the fusion function of the two eyes of the tested person is normal, 4 visual marks can be seen, if only 3 visual marks are seen, the single-eye inhibition is shown, and if the tested person is double vision, 5 visual marks can be seen.
After the computer system generates the stereoscopic test image, the testee can input first test information through the number keys of the keyboard, and the first test information is the number of the visual targets seen by the testee.
Step S2, the computer system receives first test information, generates a first stereoscopic test result according to the first test information, if the first stereoscopic test result is qualified, the computer system performs step adjustment on the parallax value of the designated sighting target of the stereoscopic test image, and after the parallax value is adjusted in each step, the computer system receives second test information and generates a second stereoscopic test result according to the second test information;
after receiving the first test information sent by the subject, the computer system judges whether the binocular fusion function of the subject is normal, if not, the test program is quitted, and if so, the static stereoscopic vision test is carried out.
The specific process of the static stereoscopic vision test may be as follows: the computer system takes one of the four sighting marks as an appointed sighting mark in sequence, and the parallax value of the appointed sighting mark is adjusted in a stepped mode; after the designated sighting target is replaced and the parallax value is adjusted in a stepped mode every time, the computer system receives second test information; and the four sighting marks of the same parallax ladder correspond to the four second test information, when the test results corresponding to at least three second test information are qualified, the next-stage parallax ladder is entered, otherwise, the test program is exited.
Specifically, the computer system repeats 4 times of measurement at each parallax step, namely, 4 times of measurement is performed corresponding to four sighting marks, the examinee judges the sighting mark with parallax difference during each measurement, second test information is input through a direction key of the keyboard, the second test information is position information of the sighting mark with parallax difference, and in the 4-time measurement process of each parallax step, at least 3 times of answering are needed to enter the next-stage parallax step according to the position of the sighting mark with parallax difference.
Step S3, if the second stereoscopic vision test result is qualified, controlling the parallax value of the designated sighting target to continuously increase from zero to a preset parallax value according to a preset stereoscopic vision speed, adjusting the parallax value of the designated sighting target to be zero after increasing to the preset parallax value, then controlling the parallax value of the designated sighting target to continuously increase 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 horizontally move in random directions according to the circulation, wherein the computer system receives third test information;
after the static stereoscopic vision test is finished, the dynamic stereoscopic vision test is carried out, and the specific flow in the embodiment of the invention is as follows: sequentially taking one of the four visual targets as an appointed visual target, controlling the parallax value of the appointed visual target to be continuously increased from zero to a preset parallax value according to a preset stereoscopic vision speed, adjusting the parallax value of the appointed visual target to be zero after the parallax value is increased to the preset parallax value, controlling the parallax value of the appointed visual target to be continuously increased from zero to the preset parallax value according to the preset stereoscopic vision speed, and circulating the steps to enable the appointed visual target to generate depth motion along a sagittal plane and control all visual targets in the stereoscopic vision test image to horizontally move in random directions; the computer system receives a third test message after each replacement of the designated target.
The preset stereoscopic vision speed can be 27'/S.
And judging the sighting target with the depth motion by the testee during each measurement, and inputting third test information through a direction key of the keyboard, wherein the third test information is the position information of the sighting target with the depth motion.
And step S4, generating a stereoscopic 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, generating a stereoscopic test result according to the received test information, specifically, calculating a correct rate and a stereoscopic acutance threshold according to the first test information, the second test information and the third test information, and generating the stereoscopic test result. Wherein the threshold value of the stereo sharpness is a minimum parallax value which can be recognized by a subject.
Preferably, the embodiment of the present invention further includes: and respectively counting the time information from the change of the stereoscopic test image to the reception of the first test information, the second test information and the third test information. In practical use, the reaction time of the subject can be obtained according to the time information, and the reaction time is used for recording and data analysis by a tester.
Based on the above technical solution, an 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 so as to realize the steps of the dynamic and static stereoscopic vision testing method in the embodiment of the invention.
It can be understood that, since the terminal described in the embodiment of the present invention is a terminal for implementing the dynamic and static stereoscopic testing method described in the embodiment, for the terminal disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is simpler, and the relevant points can be referred to only the partial 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 a preset stereoscopic vision speed and a preset parallax value and generates a stereoscopic vision test image, wherein the stereoscopic vision test image comprises a plurality of sighting marks;
step 2, the computer system receives first test information, generates a first stereoscopic test result according to the first test information, if the first stereoscopic test result is qualified, the stereoscopic test image specifies the parallax value of the sighting target by step adjustment, after the parallax value is adjusted by step each time, the computer system receives second test information, and generates a second stereoscopic test result according to the second test information;
step 3, if the second stereoscopic vision test result is qualified, controlling the parallax value of the designated sighting target to be continuously increased from zero to a preset parallax value according to a preset stereoscopic vision speed, adjusting the parallax value of the designated sighting target to be zero after the parallax value is increased to the preset parallax value, controlling the parallax value of the designated sighting target to be continuously increased 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 horizontally move in random directions according to the circulation, wherein the computer system receives third test information;
and 4, generating a stereoscopic test result according to the first test information, the second test information and the third test information.
2. The dynamic and static stereoscopic viewing test method according to claim 1, wherein in step 1, the stereoscopic test image includes four optotypes, the four optotypes are distributed above, below, on the left, and on the right of the stereoscopic test image, each optotype is formed by randomly distributing a plurality of 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 °.
3. The dynamic and static stereoscopic vision testing method of claim 2, wherein in step 2, the step-adjusting the parallax value of the designated optotype of the stereoscopic vision testing image comprises: sequentially taking one of the four sighting marks as an appointed sighting mark, and adjusting the parallax value of the appointed sighting mark in a stepped manner; after each time of changing the designated sighting target and adjusting the parallax value in a ladder way, the computer system receives second test information.
4. The dynamic and static stereoscopic vision testing method of claim 3, wherein in step 2, four optotypes of the same parallax step correspond to four second testing information, and when the testing result corresponding to at least three of the second testing information is qualified, the next parallax step is entered.
5. The dynamic and static stereoscopic vision testing method of claim 3, wherein the computer system obtains the first test information through a number key of the keyboard, and obtains the second test information and the third test information through a direction key of the keyboard.
6. The dynamic and static stereoscopic vision testing method according to claim 3, wherein the step 3 further comprises: if the second stereoscopic vision test result is qualified, one of the four visual targets is sequentially used as an appointed visual target, the parallax value of the appointed visual target is controlled to be continuously increased from zero to a preset parallax value according to a preset stereoscopic vision speed, the parallax value of the appointed visual target is adjusted to be zero after the parallax value is increased to the preset parallax value, the parallax value of the appointed visual target is controlled to be continuously increased from zero to the preset parallax value according to the preset stereoscopic vision speed, and all the visual targets in the stereoscopic vision test image are controlled to horizontally move in random directions in a circulating mode; the computer system receives a third test message after each replacement of the designated target.
7. The dynamic and static stereoscopic vision testing method of claim 6, wherein in step 4, the computer system calculates the accuracy and the stereoscopic sharpness threshold according to the first test information, the second test information and the third test information to generate the stereoscopic test result.
8. The dynamic and static stereoscopic vision testing method of any one of claims 1 to 7, further comprising: and respectively counting the time information from the change of the stereoscopic test image to the reception of the first test information, the second test information and the third test information.
9. The dynamic and static stereoscopic viewing test method of any one of claims 1 to 7, wherein the preset stereoscopic speed is 27 "/S.
10. A terminal, characterized in that 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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| CN112866679A (en) * | 2021-04-23 | 2021-05-28 | 广东视明科技发展有限公司 | Multi-point stereoscopic vision detection method in motion state |
| CN113080839A (en) * | 2021-04-12 | 2021-07-09 | 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 |
| CN113516683A (en) * | 2021-04-12 | 2021-10-19 | 广东视明科技发展有限公司 | Modeling method for evaluating influence of moving speed on stereoscopic vision |
| CN116725473A (en) * | 2023-08-14 | 2023-09-12 | 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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| 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 |
| CN112866679A (en) * | 2021-04-23 | 2021-05-28 | 广东视明科技发展有限公司 | Multi-point stereoscopic vision detection method in motion state |
| 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 |
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