基于形状模板的快速高精度可靠图像匹配_赵振民.pdfVIP

第 30卷第 2期 计算机应用 Vo.l 30 No. 2 2010年 2月 Journal of ComputerApp lications Feb. 2010 : 1001- 9081( 2010) 02- 0441- 04 赵振民, 彭国华, 符立梅 (, 710072) (die0lian0hua@ 126. com) : 为了提高工业检测中图像匹配精度和速度, 提出一种基于 状模板的快速高精度图像配准算法: 根据定 义的图像匹配相似度量,采用图像金字塔有哪些信誉好的足球投注网站匹配策略, 利用 状信息进行模板匹配具体流程为: 首先在参考图像 上选择感兴趣区域生成模板,使用 Canny滤波器对模板和有哪些信誉好的足球投注网站图像进行滤波, 并计算边缘点的方向向量; 其次,在此基 础上构造该模板和有哪些信誉好的足球投注网站图像的图像金字塔, 在图像金字塔最高层图像进行完全遍历匹配, 获得具有匹配分值的潜在 匹配点, 然后根据匹配分值大小逐层逐次跟踪潜在匹配点, 进行匹配, 直至图像金字塔最底层; 最后使用最小二乘法 调整位姿参数,使其达到亚像素精度实验表明该方法匹配速度快, 匹配精度高, 而且匹配鲁棒性高, 不受遮挡混乱 非线性光照变化离焦对比度低全局对比度反转局部对比度反转等情况的影响, 完全可以满足实际工业需求 : 状模板匹配; 图像金字塔; 最小二乘法; 方向向量; Canny算子 : P751; P391. 41 : A Fast h igh-precision reliab le im age m atch ing algorithm based on shape ZHAO Zhen-m in, PENG Guo-hua, FU L-imei (College of Science, N orthwestern P olytechnical University, X ipan Shaanxi 710072, China) A bstract: A shape-based m atching algorithm was proposed to mi prove the accuracy and speed of mi age m atching in industrial detection. It is the temp late m atch ing based on shape inform ation, using mi age pyram id strategy, accord ing to m atch ing smi ilarity measures defined. Specific process was as follow s: first, the temp late was generated by selecting the interest region in the reference mi age. hen, the tem plate and the search mi age w ere filtered using Canny operator, and the direction vectors of their edgesw ere computed. he mi age pyram idsw ere constructed for the filtered tem plate and the filtered search mi age on th is basis. he mi age m atching w as carried out on the highest level of the mi age pyram ids according to the smi ilarity m easures defined.