A method of generating beautified two-dimensional code
A technology of two-dimensional codes and code words, which is applied to recording carriers used by machines, instruments, computer parts, etc., can solve the problems of not being able to see the background clearly and affect the visual effect, so as to improve the visual effect and maintain the visual integrity Effect
Active Publication Date: 2018-01-23
NANJING FENGLIJIAN IT CO LTD
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Problems solved by technology
In the existing similar two-dimensional code beautification method, there are more dark and light noise modules on the faces of the characters in the background image, and some of them can’t even see the background clearly, which greatly affects the visual effect
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[0046] The present invention will be further described below in conjunction with drawings and embodiments.
[0047] Such as figure 1 As shown, a method for generating a beautified two-dimensional code is characterized in that it comprises the following steps:
[0048] Step 1. Construct codeword distribution map
[0049] According to the QR code standard [ISO / IEC 18004 2006], there are certain rules for the division of RS blocks in a certain version and the distribution of codewords in each RS block. This method utilizes the arrangement rule of the code words, marks the code words in each RS block, and constructs a code word distribution map. The RS block is a code word grouping structure defined in the two-dimensional code. This type of two-dimensional code has a built-in RS error correction algorithm to generate an error correction codeword, and place the error correction codeword after the data codeword. The data codewords and error correction codewords in each group for...
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The invention discloses a method for generating a beautified two-dimensional code. According to the RS block in the two-dimensional code structure and the distribution characteristics of the code words in the RS block, the present invention generates a code word distribution map; then utilizes the saliency detection technology to detect the region of interest in the background picture to generate a saliency map; combined with the code word distribution map and saliency map, calculate the saliency value of each codeword block, and form a codeword sorting table according to the saliency value, and select the top m codewords as possible Replace the area, the rest is a non-replaceable area; finally, for the codeword module in the replaceable area, directly replace the background image; for the module in the non-replaceable area, adopt a threshold-based layered replacement rule. In addition, the shape of the "back" locator of the functional area can also be transformed. The present invention increases the diversity and interest of the content of the two-dimensional code, makes the two-dimensional code more personalized, and improves the appearance and visual effect of the two-dimensional code.
Description
technical field [0001] The invention belongs to the technical field of two-dimensional codes, and in particular relates to a method for generating beautified two-dimensional codes. Background technique [0002] Quick Response Code (Quick Response Code), referred to as QR code, is a two-dimensional barcode invented by Japan's Denso wave company in 1994. QR code was approved by ISO international standard ISO / IEC18004 in June 2000. QR code is an open standard with open specifications. QR codes usually consist of a series of black and white square modules arranged according to certain rules to form a matrix. QR code has a larger storage information capacity than one-dimensional barcode, rich coded character set, strong error correction ability, and unique positioning function can resist rotation. With the popularity of smart phones with cameras, QR code applications are becoming more and more popular, such as electronic coupons, train tickets, scanning code payment, billboards...
Claims
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IPC IPC(8): G06K19/06
Inventor 李黎吴国峰
Owner NANJING FENGLIJIAN IT CO LTD