关键词: 边缘检测, 递归滤波, 平滑滤波器, 模糊边缘模型

Abstract: For the edges detection problem of digital images containing different degrees of noise, two smoothing and edge detection filters, based on a model of crest-line blurred edge contours, were proposed. First, these filters were used to achieve image smoothing and gradient calculation by the third-order recursive form, and then non-maximum suppression and dual-threshold edge detection were performed. The experimental results show that the proposed method can obtain more clear gradient images, accurate detected edge and less computational time than the ones with Canny and Deriche operators.

Key words: edge detection, recursive filtering, smoothing filter, blurred edge model