图像边缘检测的Prewitt算子的改进算法  

Improvement of Prewitt operator on edge detection of Image

作　　者：樊娜[1] 李晋惠[1] 

机构地区：[1]西安工业学院计算机科学与工程学院,西安710032

出　　处：《西安工业学院学报》2005年第1期37-39,44,共4页Journal of Xi'an Institute of Technology

基　　金：陕西省教育厅自然科学基金 (0 3JK1 71 )

摘　　要：　本文对图像边缘检测经典算子Prewitt算子和该算子模板匹配方法进行了分析,根据模板排列规律,建立矩阵变换关系,提出一种改进算法.经实验证明,在一定配置环境中,将改进算法应用在某图像连续处理系统中,图像处理效果保持不变,较好的平滑了噪声,且目标物体的边缘检测轮廓清晰.和经典Prewitt算子比较,改进后的算子处理时间显著缩短,处理358张大小为184×184的图片所用时间为2.563s,而改进前所用处理时间为19.685s.处理速度提高了8倍,满足了图像连续处理系统对处理时间的要求.The method of Prewitt operator combined with template is analyzed in this paper.According to the principle of template arrangement,the relationship of matrix transformation is set up and an improvement method of Prewitt is provided.The result of experiment shows that the effect of image processing is maintained and the outlines of pictures are clear and smooth.Compared with Prewitt operator,it will take 2.563 seconds to process 358 images by modified Prewitt operator.The time of processing is reduced and the speed of image processing by the modified Prewitt operator is 8 times faster than by common algorithms.

关 键 词：边缘检测 PREWITT算子 模板 矩阵变换 

分 类 号：TN911.73[电子电信—通信与信息系统]