A Decoding System of MaxiCode using the Camera Mobile Phone

• Main Authors: Kuo, Yi-Cheng, 郭益成
• Other Authors: Chen, Ling-Hwei
• Format: Others
• Language: en_US
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/54404188375913835511

碩士 === 國立交通大學 === 多媒體工程研究所 === 97 === In this thesis, we construct a MaxiCode decoding system, and we implement it on the camera mobile phone. MaxiCode is a fixed-size matrix 2D barcode, and it is often used by transportation industry to record the transportation information of packages. In our system, we process the MaxiCode’s picture which is taken by the camera phone. Firstly, the edge points of the picture are used for the image binarization. Next, we use the thinned connected components to locate the Finder Pattern of MaxiCode, and we find the Orientation Pattern of Maxicode to rotate the code into the right position. Then we extract the boarders of MaxiCode, and we use inverse perspective transformation to rectify the code shape. Finally, the run-length of data points are extracted by horizontal projection, and the modules corresponding to the run-length are taken to decode. Experimental results show that the system can decode the MaxiCode image correctly and efficiently.