一种改进的Canny边缘检测算子

摘要

用Canny边缘检测算子检测一些边缘不明显图片的边缘时,得到的边缘图像可能有间断,甚至会漏检一些倾斜的边缘.本文通过对两个斜方向上的梯度信息的提取添加,使梯度信息更加完整,进而得到了更好的边缘图像.Lina图片和折反射全向图像的边缘检测效果证明了改进算子的有效性.%While extracting the edges of some fuzzy images with Canny operator, the edge images may be intermittent, even miss some oblique lines. In this paper, by adding another two diagonal gradients, the diagonal information is more complete, so better edges of images can be got. The test results of Lina and catadioptric omni-directional images proved the effectiveness of the improved operator.