摘要： 在实际应用中，Data Matrix二维条形码的解码效果会受到不均匀光照和复杂背景的影响。为此，提出一种层次化的Data Matrix实时解码方法。利用大津法将条码图像的前景和背景进行分割，得到二值化的条码图像，对其进行区域定位和精确定位。在此基础上，设计基于数字信号处理的二维条形码快速解码终端。实验结果表明，该解码方法具有较好的实时性和较高的鲁棒性。

关键词: 条码识别, 二值化, 条码定位, 连通域, Radon变换

Abstract: Un-uniform illumination and complex background will influence Data Matrix 2D barcode decoding effect in real application situation. Aiming at this problem, this paper proposes a hierarchical method of Data Matrix real-time decoding. The method implements barcode region segmentation from background with Otsu algorithm to get the binary barcode image. It coarsely localizes the barcode region and achieves fine-level localization, and develops a terminal for real-time Data Matrix decoding based on Digital Signal Processing(DSP). Experimental results demonstrate that the method is real-time and robust.

Key words: barcode recognition, binaryzation, barcode localization, connected domain, Radon transform

中图分类号: 

• TP391.41