A method for measuring the reproduction resolution of vr glasses

Abstract

The invention relates to the field of measuring the resolution of small and medium-sized displays in VR glasses, in particular to a test chart for the inherent resolution of displays in VR glasses or helmet glasses and the reproduction resolution of VR videos in 360-degree VR mode. The test chart used to measure the inherent resolution is horizontally distributed with stripes of specific horizontal and vertical resolution values. These resolution values ​​are the main resolution used by current mobile phone displays and VR glasses. There are three lines of the same fringe distribution used to measure the reproduction resolution, corresponding to 3 / 4, 1 / 2, 1 / 4 of the vertical position of the panorama, and 3 / 4π, π / 2, π / 4 positions. The relationship between the grayscale change of black and white stripes with different horizontal and vertical resolutions and the spatial position is a sinusoidal function. The invention has low cost, simple operation and intuitive measurement effect.

Description

Technical field: [0001] The invention relates to the field of measuring the resolution of small and medium displays in VR glasses, in particular to a method for measuring the reproduction resolution of VR glasses. Background technique: [0002] With the development and popularization of VR (virtual reality) technology, a variety of VR glasses have appeared on the market, and the quality of these devices varies. In order to make the relevant market more transparent and allow consumers to have a more intuitive understanding of product quality, it is urgent to develop an effective quality evaluation system for VR glasses displays to evaluate the performance and quality of various VR head-mounted display devices. Indicators are defined, evaluated and standardized. Among various quality indicators, resolution is an extremely important one. [0003] For the quality evaluation system of displays, especially high-definition displays, there is a relatively mature industry standard ...

AI Technical Summary

Problems solved by technology

It is not suitable if it is used to measure the resolution of reproduced images in 360-degree VR mode after projection deformation

for example figure 1 , the stripes corresponding to 1920x1080 are set in the middle and upper part of the image, and the corresponding latitude is greater than π / 2 (the effect in 360-degree VR mode is shown in Figure 8(b)), if you want to measure the latitude of π / 2 resolution, you can’t use this 1920x1080 stripe

figure 2 There are more types of stripes of different frequencies provided in , but the same problem also occurs. There are not enough kinds of test stripes at different latitudes, and it cannot meet the ability of image resolution measurement under 360-degree VR mode display.

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