基于骨架模板匹配的彩色印刷品文字缺陷检测

针对彩色印刷品文字缺陷检测难等问题，提出了基于骨架模板匹配的文字缺陷检测方法。选取标准样本图像中有代表性的颜色，经过粗分割和精分割，提取主颜色；在每个主颜色的色板上分析连通分量区域几何位置关系，定位文字区；逐步细化文字区色板并赋予不同权值，得到骨架模板；把待检样品图像与骨架模板匹配得到缺陷信息并标记在待检样品图像上，完成缺陷检测。实验结果表明，该方法能有效消除印刷过程中多种干扰带来的抖动和配准精度对文字缺陷检测的影响，精确实现文字缺陷检测。

Color Printing Character Defect Inspection Based on Skeleton Template Matching

A character defect inspection method based on skeleton template matching is presented to deal with the detection problems of character breakage or stroke break. The dominant color is extracted by coarse segmentation and fine segmentation of the typical pixels from standard image samples. Regional geometric location of connected component is analyzed and text area is located on color planes of each dominant color. The text skeleton template is obtained by using the progressive refinement of color planes in text area. The sample images for inspection to skeleton template are matched in order to gain defect information and the defect information on sample images is labeled. Experiment results show that this method is able to eliminate the effects which are caused by twitter from interferences in the printing process and registration accuracy of text defect detection. It achieves an accurate defect inspection result.