关键词: 图像处理, 边缘检测, 边缘检测评价, 量化评价, 边缘连续性

Abstract: Edge detection is an important step in image processing. The results of edge detection effect directly the results of image processing. But there is lacking a standard numerical evaluation measure for the results of edge detection. A method to evaluate the edge connectivity for the results of edge detectors is brought forward. This paper regards the edge connectivity as an evaluation index of the results of image edge extraction, and evalutes the edge connectivity by calculating the average value of the product of the area of convex?hull and the length of edge segments. This paper designs multiple tests to assess the performance of the evaluation algorithm on one image by different edge detection algorithms and different parameters. The experiments prove that the algorithm of evaluating the edge connectivity is effective and fast, the evaluation result is conform to human visual system. This method has some application value for the some high level of image processing and automatic processing.

Key words: image processing, edge detection, edge detection evaluation, numerical evaluation, edge connectivity