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A portable dynamic vision detection method based on head-mounted display equipment

A head-mounted display device and detection method technology, which is applied in the directions of eye testing equipment, medical science, image data processing, etc., can solve the problems of unfavorable traffic safety daily management and dynamic management, inconvenient driver self-detection, inconvenience, etc., to achieve Conducive to daily management, conducive to dynamic management, and convenient to carry

Active Publication Date: 2018-05-29
ANHUI SANLIAN APPLIED TRAFFIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need to be equipped with testing sites, professional testing personnel and supporting facilities when implementing testing, the tested personnel need to go to a fixed testing location, resulting in high cost, inconvenient, time-consuming and laborious testing, and it is only used for statutory testing of drivers , it is not convenient for the daily self-test of the driver
And because the statutory qualitative detection is one-time, it is difficult to find the daily changes of the driver's dynamic vision, which is not conducive to the daily management and dynamic management of traffic safety

Method used

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  • A portable dynamic vision detection method based on head-mounted display equipment
  • A portable dynamic vision detection method based on head-mounted display equipment
  • A portable dynamic vision detection method based on head-mounted display equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A portable dynamic vision detection method based on a head-mounted display device, comprising the following steps:

[0041] (1) Set the optical parameters of dynamic visual acuity: the brightness, saturation and chroma of the visual mark;

[0042] (2) Set visual acuity value parameter, make the projected area of ​​dynamic visual mark and static visual acuity table one-to-one correspondence;

[0043] (3) Use the three-dimensional dynamic visual target imaging algorithm to construct the size, moving speed and environmental background of the dynamic visual target on the screen of the head-mounted display device, thereby generating a C-shaped dynamic visual target and making it suitable for the optical parameters of step (1) ;

[0044] (4) According to the distance between the imaging surface in the screen of the head-mounted display device and the human eye and the actual depth of field in the dynamic visual target, perform three-dimensional calibration on the perceived d...

Embodiment 2

[0049] This embodiment adopts the detection method of the above-mentioned embodiment 1 for detection, wherein the head-mounted display device selects a portable eye mask, including a liquid crystal screen and an embedded processor (CPU Samsung 6410, memory 2G).

[0050] In this experiment, the dynamic vision target is set to select a monochromatic yellow light dynamic target, the saturation is 80%, and the brightness is 280cd / m 2 ;

[0051] In this experiment, computer 3D modeling and imaging technology is used to render the valued optotype parameters to generate a 3D projection image with simulated driving as the environmental background, and the dynamic vision optotype is in the middle of the road surface. Let the generated optotype image be perpendicular to the road in the environment background, and the direction of movement of the optotype moves vertically according to the setting of the program.

[0052] In this experiment, the human eye and the road vision in 3D imagin...

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Abstract

The invention relates to a portable dynamic vision detection method based on a head-mounted display device. The optical parameter of dynamic vision is set, a vision value parameter is set, and the projection areas of a dynamic visual target are made to correspond to static visual charts one to one; By using the three-dimensional dynamic visual target imaging algorithm, a dynamic visual target is generated in a screen of the head-mounted display device; according to the distance between an imaging plane in the screen of the head-mounted display device and a human eye and the actual field depth in the dynamic visual target, three-dimensional calibration is conducted on the sensing field depth observed by an examinee; according to the sensing field depth and the movement interval time of the dynamic visual target, the projection area of the corresponding dynamic visual target is calculated, and according to the visual value parameter, a dynamic visual value is obtained. According to the optical parameter, the brightness, saturability and chrominance of the dynamic visual target are calibrated, the sensing field depth of a three-dimensional imaging model replaces the physical field depth in the traditional sense, and detection can be automatically conducted anywhere and anytime.

Description

Technical field: [0001] The invention relates to the field of traffic safety equipment, in particular to a head-mounted display device-based portable dynamic vision detection method. Background technique: [0002] Dynamic vision refers to the ability of the eyes to capture, decompose, and perceive images of moving objects when the eyes observe moving objects. It is an ability to perceive the details of moving objects. This ability is accompanied by the process of capturing images through dynamic vision, processing brain information in a short period of time, and the corresponding reaction process of the body. Dynamic vision is relative to static vision, that is, the ability to perceive details of stationary objects. It correlates with, but cannot be predicted by, static vision. The driver's dynamic vision is closely related to traffic safety. The ability of the driver's eyes to distinguish objects in relative motion during driving is directly related to driving safety. If ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B3/032G06T17/00
CPCA61B3/0041A61B3/032G06T17/00
Inventor 金会庆王江波张树林邱佳杰郝诗海傅红
Owner ANHUI SANLIAN APPLIED TRAFFIC TECH
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