• 数字信息处理 •

### 基于八方向Sobel算子的边缘检测算法

1. 河北师范大学数学与信息科学学院 石家庄050024;河北师范大学数学与信息科学学院 石家庄050024;河北师范大学数学与信息科学学院 石家庄050024;石家庄学院 石家庄050035;河北师范大学数学与信息科学学院 石家庄050024
• 出版日期:2018-11-16 发布日期:2018-11-16
• 基金资助:
本文受国家自然科学基金项目(11201113),河北省科学技术研究与发展计划项目(12226508)资助

### Edge Detection Algorithm Based on the Eight Directions Sobel Operator

ZHENG Ying-juan,ZHANG You-hui,WANG Zhi-wei,ZHANG Jing and FAN Sheng-juan

• Online:2018-11-16 Published:2018-11-16

Abstract: An edge detection algorithm based on eight directions sobel operator is proposed for the problem that traditional edge detection method’s result is not satisfactory. The algorithm based on eight templates of 0°,22.5°,45°,67.5°,90°,112.5°,135° and 157.5° different directions is used to detect edges better in different directions. In the detection process,we take into account that the distance of neighborhood pixel to the center pixel is different,the contribution of the neighborhood pixel to the center pixel is different. This algorithm weights the neighborhood pixel according to the Euclidean of it to the center pixel. We let the pixel nearer to the center pixel has greater weight. The experimental results show that the new algorithm can detect the image edge relatively complete,with clear contours and better continuity.

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