摘要： 提出了一种基于亚像素边缘检测的二维条码识别算法,能有效地解决边缘模糊对条码识别的影响。以PDF417条码为例研究了基于亚像素边缘检测的二维条码识别算法。首先定位条码位置并在条码中分割出单个码字符号图像。然后根据分割出来的单个码字符号图像讨论了基于亚像素边缘检测的识别算法。实验结果表明基于亚像素边缘检测的识别算法具有良好的性能,显著地提高了条码的识别率，满足了实际使用的要求。

关键词: 二维条码, 条码识别, 亚像素边缘检测, PDF417

Abstract: A novel recognition algorithm based on subpixel detection is proposed in this paper. This novel algorithm can resolve the problem caused by the blurred edge. In the paper, PDF417 are used as an example to discuss the algorithm. First, the position of barcode is located from the image. Then the image is segmented to locate the single codeword image. At last, the algorithm based on subpixel detection is discussed as an important topic. The result shows that the performance of the novel algorithm based on subpixel detection is good. It can achieve higher recognition rate, which suffices to the requirement of the practical use.

中图分类号: 

• TP391.44