| 摘要 |
<p>Provided are a multilayer quick response code encoding/decoding method and encoding/decoding device to improve the information capacity contained in the QR code. The method includes: obtaining an image layer number N of a multilayer quick response (QR) code, with the multilayer quick response (QR) code being a multilayer quick response (QR) code obtained by encoding an original quick response (QR) code; acquiring N groups of colour coefficient characteristic values from a bidirectional invertible colour characteristic library, wherein the colour coefficient characteristic values are used for changing the colour parameter of the original quick response (QR) code image layer; and overlaying the original quick response (QR) code image layer according to an agreed colour order using the acquired N groups of colour coefficient characteristic values so as to obtain the multilayer quick response (QR) code image. On one hand, the multilayer QR code image can meet the transmission of a large amount of information, thus improving the transmission efficiency; on the other hand, multiple encryption of the file can be carried out, increasing the security of file transmission.</p> |
