Method and system for evaluating resolution index in naked eye stereoscopic display

A naked-eye stereo and evaluation method technology, applied in stereo systems, televisions, electrical components, etc., can solve the problems of impracticality and increase the difficulty of determining the minimum resolution test target.

Active Publication Date: 2017-01-11
SYSU CMU SHUNDE INT JOINT RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for better understanding when switching between two modes: 1) In one mode (the normal viewing direction), it adjusts how much light enters an eye's retina compared with another mode called 3D; or2) Switched back into regular observation mode where we see things that look slightly differently from what they were looking at beforehand instead of just showing them up sideways like traditional monitors. By measuring these changes over time, researchers have been able to determine which part of our brain has changed during vision training sessions.

Problems solved by technology

This patents discuss two technical problem addressed in these documents relates to evaluating the performance of displaying images accurately despite variations caused by factors like pixel size and numbering arrangement. Current methods have limitations due to their subjectivity and lack precision.

Method used

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  • Method and system for evaluating resolution index in naked eye stereoscopic display
  • Method and system for evaluating resolution index in naked eye stereoscopic display

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Embodiment 1

[0040] The principle of 3D display is the principle of binocular parallax, that is, the image is divided into two channels by using a light-splitting element, so that different images are sent to different eyes, and then the brain produces a concave-convex visual effect through the fusion of the images, so there is stereo vision. The most critical element in this process is the light splitting element, which is also the biggest difference between the display in 2D mode and 3D mode. In glasses-type 3D displays, polarizers or shutter glasses are used to split light, while in naked-eye 3D displays, grating arrays or lens arrays are used to split light.

[0041] Secondly, the spectroscopic element is a linear optical system. When the object light passes through the spectroscopic element for imaging, its spatial spectrum will be modulated. The modulation behavior is as follows: the imaging contrast and phase will be modulated, and the imaging quality will be affected accordingly. ...

Embodiment 2

[0064] The evaluation method provided in Embodiment 1 can only determine whether the resolution of the naked-eye stereoscopic display device is lost in 3D mode, but cannot evaluate its actual resolution. In order to solve this technical defect, this embodiment provides another evaluation method. On the basis of the method in Embodiment 1, this method adds a step, and the specific content is as follows:

[0065] In the case that it is determined that the resolution has been lost, the evaluation method also includes the step of determining the actual resolution of the naked-eye stereoscopic display device in 3D mode, specifically shifting the determined point to the left so that it falls on the spatial frequency-contrast threshold curve On C(f), then determine the spatial frequency corresponding to this contrast, and then solve the actual resolution of the naked-eye stereoscopic display device in 3D mode according to the spatial frequency.

Embodiment 3

[0067] This embodiment further explains the quantization process through two examples.

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Abstract

The invention relates to a method of evaluating a resolution index in naked eye stereoscopic display. The method comprises the following steps: S1, the brightness of a naked eye stereoscopic display device to play a pure white picture in a 3D mode is acquired and marked as E; and the illumination L1 of the naked eye stereoscopic display device to play the pure white picture in the 3D mode and the illumination L2 when a pure black picture is played are acquired; S2, the E, the L1 and the L2 are used for building a spatial frequency-contrast threshold curve C(f); S3, the naked eye stereoscopic display device displays a tested picture in the 3D mode, the image displayed by the naked eye stereoscopic display device is photographed, the photographed image is processed, and the contrast of the photographed image is thus acquired; S4, the spatial frequency of the photographed image is solved; and S5, according to the contrast of the photographed image and the spatial frequency, a corresponding point is determined in the f-C space, and a resolution loss condition is judged through the relation between the point and the spatial frequency-contrast threshold curve C(f), wherein the resolution loss conditions are as follows: if the point is lower than the threshold curve, resolution loss happens; and if the point is higher than the threshold curve, the resolution has no loss and is unchanged.

Description

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Claims

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Application Information

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Owner SYSU CMU SHUNDE INT JOINT RES INST
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