计算机技术与发展Issue(11)：22-25,4.DOI:10.3969/j.issn.1673-629X.2013.11.006
基于改进的Sobel算子边缘检测算法
Edge Detection Algorithm Based on Improved Sobel Operator
摘要
Abstract
An improved Sobel algorithm is proposed to overcome the disadvantage,which the traditional Sobel operator algorithm is insen-sitive for the diagonal directions. The algorithm increases two templates in both directions of 45 o and 135 o ,and reallocates operator tem-plate weight according to diagonal edge. The algorithm first converts the image to grayscale image,and then obtains the gradient image with the improved Sobel operator,then refines the gradient image with local gradient threshold values,finally the algorithm binaries the image according to the direction toward combining selected threshold. Simulation result shows that the algorithm has a higher detection accuracy,achieves more rich and more continuous edge than traditional Sobel algorithm.关键词
边缘检测/Sobel算子/斜向边缘Key words
edge detection/Sobel operator/diagonal edge分类
信息技术与安全科学引用本文复制引用
沈德海,侯建,鄂旭..基于改进的Sobel算子边缘检测算法[J].计算机技术与发展,2013,(11):22-25,4.基金项目
辽宁省高等学校实验室项目(L2012397) （L2012397）
博士后基金项目(2012M520158) （2012M520158）
辽宁省高等学校实验室项目(L2012397) （L2012397）
辽宁省“百千万人才工程”资助项目(2012921058) （2012921058）
教育厅科研一般项目(L2012400) （L2012400）
