中圖分類號(hào)： TN911.73 文獻(xiàn)標(biāo)識(shí)碼： A DOI： 10.19358/j.issn.2096-5133.2022.03.003 引用格式： 李迪，吳奇，楊浩森. 基于改進(jìn)Sobel算子的邊緣檢測系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)[J].信息技術(shù)與網(wǎng)絡(luò)安全，2022，41(3)：13-17.
Design and implementation of edge detection system based on improved Sobel operator
Li Di，Wu Qi，Yang Haosen
(School of Microelectronics，Xidian University，Xi′an 710071，China)
Abstract： Edge detection is one of the basic problems in image processing and computer vision, and the Sobel operator is one of the most important operators for edge detection. In view of the limitations of the traditional Sobel operator and the low efficiency of serialized image processing on the PC side, this paper proposes an improved method. Firstly, the template direction of the traditional Sobel operator is changed from 2 directions to 8 directions, and the direction information of the pixels in the image is fully utilized. Then according to the characteristics of the Field Programmable Gate Array(FPGA) hardware such as fast processing speed, parallel pipeline processing, etc，F(xiàn)PGA is used to replace the PC side to process the image. The edge detection system of the improved Sobel operator can optimize the edge detection effect of the image and improve the efficiency of image processing. The simulation results show that using the edge detection based on the improved Sobel operator of FPGA, the extracted image edge information is more ideal.
Key words : Field Programmable Gate Array(FPGA)；Sobel operator；edge detection；image processing
