Image contrast improving method of paper-like display

Abstract

The invention discloses an image contrast improvement method for a paper-like display. The method comprises the following steps: carrying out the video shooting of electrophoresis electronic paper, and screening out a video with electrophoresis electronic paper severely interfered by light noise; framing the video into a picture and intercepting and storing an image of a middle area; converting the image into a grey-scale map; carrying out homomorphic filtering processing on the grey-scale map; calculating a brightness average value of the processed map, and drawing a brightness change curve graph of the image. According to the invention, homomorphic filtering is used to denoise the electrophoresis electronic paper image influenced by the light noise, the noise reduction effect is remarkable, the brightness contrast of the image is enhanced, the authenticity and the accuracy of obtained electrophoresis electronic paper image content can be ensured; and the method can predict the subsequent video brightness by observing the brightness change curve of the image, so that the filtering threshold value can be conveniently and quickly found out, the situation that an obtained image doesnot meet the requirement due to improper setting of certain values can be avoided, and the reliability of image content is further improved.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for improving image contrast of a paper-like display. Background technique [0002] With the development of the times, all kinds of display screens are widely used in people's lives, but all kinds of display screen display technologies mainly used at present have the same development problem-the display effect of the display screen is not good when the external light is strong. Too much energy is consumed during use, resulting in low performance ratio, and electrophoretic electronic paper display has the characteristics of ultra-high performance ratio and paper-like display, and it will inevitably have a broad market prospect in the trend of future display technology development. [0003] When we shoot electrophoretic electronic paper, because it cannot exist in a closed dark space, it will inevitably be affected by light noise when shooting. There is a big diff...

AI Technical Summary

Problems solved by technology

[0002] With the development of the times, all kinds of display screens are widely used in people's lives, but all kinds of display screen technologies mainly used at present have the same development problem-the display effect of the display screen is not good when the external light is strong. Too much energy is consumed in the process of use, resulting in low performance ratio, and the electrophoretic electronic paper display has the characteristics of ultra-high performance ratio and paper-like display, and it will inevitably have a broad market prospect in the trend of future display technology development.

[0003] When we shoot electrophoretic electronic paper, because it cannot exist in a closed dark space, it will inevitably be affected by light noise when shooting. There is a big difference between the image obtained and the image observed by the actual human eye. Therefore, how to effectively The removal of optical noise in the image is an important problem in the application of electrophoretic electronic paper

[0004] At present, there is no method for removing optical noise from images obtained by shooting electrophoretic electronic paper. Therefore, it is necessary to conduct experiments on this method and explore a better way to remove optical noise in images.

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