21 March 2013 Dual resolution two-dimensional color barcode
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In this paper, a QR code is presented with a dual resolution structure. It contains a high resolution layer that is coded in luminance and is in consistency with the conventional QR code, and a low resolution layer providing additional error checking information, that is coded in chrominance and is robust to blurring. The proposed QR code is compatible to its underlying conventional black and white barcode as it can be read by their decoders. Its advantage is additional reliability when a color decoder is used. In particular, it enhances the decoding accuracy for devices such as mobile devices for barcodes printed in small sizes.
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Zhigang Fan, Zhigang Fan, Yonghui Zhao, Yonghui Zhao, Shenge Wang, Shenge Wang, Hengzhou Ding, Hengzhou Ding, } "Dual resolution two-dimensional color barcode", Proc. SPIE 8664, Imaging and Printing in a Web 2.0 World IV, 86640K (21 March 2013); doi: 10.1117/12.2009370; https://doi.org/10.1117/12.2009370


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