新的二维形状描述方法与边界平滑-计算机应用研究.PDFVIP

第 8 期 郑晓东等: 新的二维形状描述方法与边界平滑 1·71 · 新的二维形状描述方法与边界平滑 * 郑晓东, 周妮娜, 黄心汉 ( 华中科技大学 控制科学与控制工程系, 湖北 武汉 430074) 摘 要: 提出了一种新的二维形状描述方法 , 该方法利用对目标图像边界搜索的结果 , 将目标边界曲线像素的 坐标 ( x , y ) 分别用两个数组 x = X[ i] ; y = Y[ i] 描述。将一个二维图像的问题转换成两个一维数组的分析问题 , i i 简化了分析的复杂度。通过分别对两个数组的处理可以对原目标边界进行一系列处理, 如边界圆滑、锐化、拐点 检测等。介绍了该描述方法及其基本性质, 并利用该描述方法通过小波分解对工件目标边界的平滑进行了具体 分析。 关键词: 形状描述; 二进制小波; 图像处理; 边界跟踪 中图法分类号: TP301. 6 文献标识码: A 文章编号 : 1001- 3695( 2006) 08- 0171- 03 New Method of 2D Shape Representation and Edge Smoothing ZHENG Xiao-dong, ZHOU Ni-na, HUANG Xin-han ( Dept. of Control Science Engineering, Huazhong University of Science Technology , Wuhan Hubei 430074 , China) Abstract: There is put forward a new methods of 2D( two-dimensional) shape representation which stores the object border- line pixels coordinate value( x , y ) into two arrays x = X[ i] ; y = Y[ i] by the sequence of object borderline tracking result. It i i changes a 2D image problem into two single dimension arrays’problem. It lowers down the complexity of analysis. A series of processes about object borderline can be implemented such as smoothing, enhancement, corner detection etc. By operating on the two arrays. The representation of this method and its basic property are Introduced. And a concrete analysis has been done for the course of workpiece boundary smoothing based on this 2D shape representation by wavelet. Key words: Shape Representation; Binary Wavelet; Image Processing; Boundary Tracking 图像经过边缘提取或阈值分割等处理后就得到了目标封 X[ i] , y =Y [ i