Hue-based volume-flexible color two-dimensional code stream data communication method and system

Abstract

The invention provides a hue-based volume-flexible color two-dimensional code stream data communication method and system. The method comprises the following steps: obtaining color recognition rate of a picture shooting device, and finding the number of colors in the device when the two-dimensional code capacity can be maximized; carrying out original data segment according to the selected optimal color quantity and adding check bit and a mask; carrying out color mapping with data by utilizing a color set obtained through a color generation algorithm and generating a color two-dimensional code; finding a two-dimensional code positioning pattern in each picture and carrying out positioning on each color block; carrying out color identification according to each color plate in the code; and finally, carrying out mapping between the identified colors and the corresponding data, and obtaining transmitted data after check and mask removal. Through the color generation algorithm, color identification rate is improved, and the capacity of a conventional two-dimensional code is improved; and the two-dimensional code stream serves as a communication mode to realize data transmission between devices, and transmission efficiency is high.

Description

technical field [0001] The present invention relates to two-dimensional codes and related communication technologies, in particular to a hue-based capacity-variable color two-dimensional code stream data communication method and system. Background technique [0002] Screen to camera communication (SCC) is a short-distance point-to-point communication method that has become very popular in recent years. In SCC, the transmitted file is encoded into a two-dimensional code stream and displayed on the screen of the sending end, and the receiving device continuously captures and decodes the screen of the sending end to receive the sent file. This communication method does not rely on special hardware devices on the mobile phone, and since the screen of the sending end must be photographed, SCC also has good security and privacy features. [0003] Nowadays, QR codes are widely used in daily life. In 2014, a certain code scanning software on the Android platform had nearly 100 mill...

AI Technical Summary

Problems solved by technology

Although some QR codes in existing studies use 4 or even 8 colors for data transmission, none of these studies have explained the reasons for their choice of colors, and the impact of choosing different colors on transmission

What potential factors can affect color recognition in photographs have not been considered in existing studies

Although some articles mentioned the importance of color selection in QR codes, they did not conduct in-depth research on this, nor did they propose an algorithm for color selection and recognition

In addition, the limit of color recognition has not been studied, and whether more colors can be used in QR codes is still an unknown problem

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