Abstract

This paper proposes a new color QR code which is forward compatible with standard QR code decoders for increasing the conveyable capacity of encoded information. The proposed method allocates three standard bicolor QR code to color channels of YCbCr color space so that one QR code in the Y channel can be decoded by a standard QR decoder. In addition, a proprietary decoder further decodes two more QR codes in Cb and Cr channels. The proposed method is based on the standard bicolor QR code in its encoding and decoding processes, whereas conventional methods increasing the conveyable capacity require complex proprietary codecs or different technology. Experimental results show the effectiveness of the proposed method.

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