A Chinese-sensible code self-adaptive binarization processing method and device based on light balance
A processing method, Chinese Sensible code technology, applied in the field of Chinese Sensible code images, can solve problems such as increased ratio, lack of accuracy and rapidity of recognition, and lack of information
Inactive Publication Date: 2019-06-14
BEIJING INSPIRY XINCHUANG TECH
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Overexposure of light will lead to loss of information, and insufficient light will cause the gray value difference between the foreground color and the background color to become smaller, resulting in inaccurate binarization. Compensating the background light will increase the contrast of the place where the original gray level is relatively concentrated. With the accuracy and rapidity of recognition
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[0018] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] In the following introduction, the terms "first" and "second" are only used for the purpose of description, and should not be understood as indicating or implying relative importance. The following description provides multiple embodiments of the present disclosure, and different embodiments can be replaced or combined in combination, so the application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment contains features A, B, C, and another embodiment contains features B, D, then the application should also be considered to include all other possible combinations containing one or more of A, B, C, D Although this embodiment may not be clearly written in the following content.
[0020] In order to make the purpose, technical solution and advantages o...
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The invention provides a Chinese-sensible code self-adaptive binarization processing method based on light balance. The method comprises the steps of obtaining a shielding area of a user shielding a screen; collecting image information of a Chinese-sensible code in a shielding area of the user shielding the screen, converting the image information of the Chinese-sensible code into a grayscale image; illumination detection is carried out on the gray level image, carrying out light balance processing on the gray level image of the Chinese-sensible code according to an illumination detection result; grouping pixel points of the grayscale image after light balance processing according to a set image grayscale jump threshold value, determining a binarization threshold value of the grayscale ofthe pixel points of each group of each row according to a maximum entropy threshold value method, and grayscale adaptive binarization processing is carried out on the pixel points of each group of each row according to the binarization threshold value. According to the method, the accuracy and the usability of Chinese-sensible code reading of the Chinese-sensible code reading device based on the double screens are improved, and the safety and the applicability are provided for subsequent transaction payment. The invention further provides a Chinese-sensible code self-adaptive binarization processing device based on light balance.
Description
technical field [0001] The present disclosure relates to the technical field of Chinese Sensible code images, in particular, to a method and device for adaptive binarization processing of Chinese Sensible codes based on light balance. Background technique [0002] In the prior art, the Chinese Sensible Code is more and more widely used in the Internet of Things due to its advantages of large amount of information, rich categories, and offline readability. It is used for information display of items, circulation and recycling of commodities. to Hanxin code. However, since Chinese Sensible codes are usually exposed to the external environment, and are often printed or printed on different materials, the difference in ambient light will greatly interfere with the recognition of Chinese Sensible code images. Accurate recognition of Chinese Sensible code images in the case is crucial. That is to say, if the Chinese Sensible code has a large amount of information, the image size...
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Inventor 王越晏成凌涛王志申姚远
Owner BEIJING INSPIRY XINCHUANG TECH