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Method for measuring and calculating black and white refreshing time of electronic paper

A refresh time, electronic paper technology, applied in computing, image data processing, instruments, etc., can solve problems such as hindering the development and promotion of electronic paper, inability to measure research, and complex performance testing of electronic paper, achieving accurate and rapid refresh time, accurate Fast calculation, the effect of reducing the amount of processing calculation

Active Publication Date: 2020-03-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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Problems solved by technology

[0002] With the development of science and technology in modern society, electronic paper has become an indispensable information display carrier. It has good bistable characteristics. Display technology, but in reality, the performance test of electronic paper is more complicated, and the inability to effectively measure and study it has become the main factor hindering the development and promotion of electronic paper. Therefore, the detection of the refresh rate of electronic paper is helpful. Measuring the performance of e-paper

Method used

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  • Method for measuring and calculating black and white refreshing time of electronic paper
  • Method for measuring and calculating black and white refreshing time of electronic paper
  • Method for measuring and calculating black and white refreshing time of electronic paper

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Embodiment Construction

[0048] refer to figure 1 , a method for calculating the black and white refresh time of electronic paper, characterized in that the method is as follows:

[0049] (1) Use a photographic microscope to shoot and collect DW videos of electronic paper refreshed from white to white and WB videos from white to black in an environment without natural light, and adjust the magnification of the photographic microscope so that the images can clearly see the electronic paper The unit pixel grid reduces the error of measuring time.

[0050] (2) Preprocess the collected DW video and WB video, cut out the initial part of the DW video and WB video, and select the unit pixel grid on the surface of the electronic paper screen without any mess, and does not contain the unit pixel grid Border, so that the black border of the pixel grid will not affect the accuracy of the calculation data, the initial part is the video image of the first 1-2 seconds of the video.

[0051] (3) Grayscale processi...

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Abstract

The invention discloses a method for measuring and calculating the black and white refreshing time of an electronic paper. The method comprises the steps of video image acquisition, preprocessing, gray scale conversion, wavelet packet denoising and refreshing time measurement and judgment. According to the method, the image processing calculation amount can be greatly reduced; by taking the gray value of a flickering part in the electronic paper conversion refreshing process as zero, and judging the color according to the average gray value of the image, the acquisition of the color change points is prevented from being interfered by the flickering gray average, and the data is more accurate by denoising the image, so that the color change points can be obtained accurately and rapidly, therefreshing time is calculated, the calculation is rapid and convenient while the accuracy is ensured, and the refresh performance of the electronic paper can be effectively and rapidly reflected.

Description

technical field [0001] The invention relates to a monitoring technology for video image change points, in particular to a method for measuring and calculating the black and white refresh time of electronic paper. Background technique [0002] With the development of science and technology in modern society, electronic paper has become an indispensable information display carrier. It has good bistable characteristics. Display technology, but in reality, the performance test of electronic paper is more complicated, and the inability to effectively measure and study it has become the main factor hindering the development and promotion of electronic paper. Therefore, the detection of the refresh rate of electronic paper is helpful. To measure the performance of electronic paper. Contents of the invention [0003] In order to overcome the shortcomings of the prior art, the present invention provides an accurate and convenient method for measuring and calculating the black and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/90
CPCG06T7/0002G06T7/90G06T2207/10016
Inventor 易子川张桂芝熊诗怡迟锋张智水玲玲刘黎明白鹏飞张崇富彭保
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA ZHONGSHAN INST
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