Device for improving reading disorder of low eyesight crowd

Abstract

The invention discloses a device for improving the dyslexia of people with low vision. The device comprises a videography unit, an image storage unit, a video coding unit and a display unit; wherein, the videography unit is used for collecting image data; the image storage unit is used for storing the image data; the video coding unit is used for encoding the image data stored by the image storage unit into a video signal; and the display unit is used for displaying the video signal. The device further comprises a digital processing unit which is used for storing the image data collected by the videography unit into the image storage unit after the contrast stretch on the image data; the digital processing unit carries out the contrast stretch, which means: for each pixel in the image data, the input brightness value of the pixel multiplied by N equals the brightness value of the pixel output by the digital processing unit, and N is more than 1; wherein, the input brightness value of the pixel is the brightness value of the pixel in the image data collected by the videography unit. The device can improve the display frame rate of an image.

Description

technical field [0001] The invention relates to the field of electronic equipment, in particular to a device for improving dyslexia of low-vision people. Background technique [0002] Low-vision patients and the elderly have different degrees of obstacles when reading books, newspapers, documents, instructions, etc. Traditionally, they use a magnifying glass, but because it is only optical magnification, there are problems such as limited magnification and edge deformation. Therefore, in Developed countries such as Europe and the United States have basically eliminated magnifying glasses, and generally use high-tech products such as graphic and text visual aids to improve reading barriers for low-vision people. [0003] Take the picture-text visual aid device as an example. This device is a device to improve reading disabilities of low-vision people. It can present users with more vivid image effects. Through the internal digital image processing function, it can also realiz...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, due to reasons such as insufficient refinement and efficiency of the image processing algorithm, the processing time is long, and the image refresh rate often cannot reach a high level; and when the image display frame rate is low (for example: 30fps), the graphics and text visual aid Display smear phenomenon will appear during the movement of the device, which greatly affects the comfort of use

[0005] In addition, because only the brightness signal is processed, only black and white and black and white display modes can be obtained; although it can meet the basic requirements of most low vision patients, it has not taken into account some special low vision groups

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