关键词: 边缘检测, 结构元素, HSL空间, 彩色形态学, 图像处理

Abstract: A new method of realizing edge detection for color image is constructed based on the gradient algorithm of multi-structuring elements morphology in HSL space.The ability of edge detection based on multi-structuring elements morphology is superior to single-structuring element.In this method color image of RGB space is converted into image of HSL space，the basic color morphological operators in HSL space are defined and improved multi-structuring elements color morphological operators are proposed.The experiments show that this algorithm can more effectively suppress noise and better extract useful image edge information than traditional methods，and it can meet various requirements in application.

Key words: edge detection, structural elements, HSL space, color morphology, image processing