发明名称 |
Four dimensional (4D) color barcode for high capacity data encoding and decoding |
摘要 |
A method for encoding and decoding color barcodes to increase their data capacity. The encoding steps include determining a shape, a foreground color and a background color for each data cell, wherein a combination of the shape, foreground and background colors for the data cell is chosen from a plurality of such combinations in accordance with a value of the digital data to be encoded; and coloring some pixels in the data cell with a foreground color and other pixels with a background color, in accordance with the shape, foreground and background colors for the data cell determined above. The decoding steps include segmenting the data cells, recognizing a shape, a foreground color of the shape and a background color of the data cell, and obtaining digital data from a combination of the shape and foreground and background colors in each data cell. |
申请公布号 |
US8915440(B2) |
申请公布日期 |
2014.12.23 |
申请号 |
US201113337036 |
申请日期 |
2011.12.23 |
申请人 |
Konica Minolta Laboratory U.S.A., Inc. |
发明人 |
Ming Wei;Tian Yibin |
分类号 |
G06K19/06;G06K7/00;G06K7/12 |
主分类号 |
G06K19/06 |
代理机构 |
Chen Yoshimura LLP |
代理人 |
Chen Yoshimura LLP |
主权项 |
1. A method for decoding a color barcode, comprising the steps of:
(a) segmenting a plurality of data cells in the color barcode using a data processing apparatus; (b) recognizing in each data cell, using the data processing apparatus, a combination of a shape formed by a subset of pixels of the data cell, a foreground color of the shape, and a background color of the remaining pixels of the same data cell, wherein the foreground color and the background color are selected from a multiplicity of different colors, and wherein at least one of the plurality of data cells has a foreground color and background color combination containing a color that is neither white nor black; (c) using the data processing apparatus, obtaining digital data from the combination of the recognized shape and the foreground and background colors in each data cell. |
地址 |
San Mateo CA US |