关于“数字阶跃边缘源于二阶方向导数过零点”的评论。

Comments on ``digital step edges from zero crossings of second directional derivatives''.

机构信息

Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA 02139.

出版信息

IEEE Trans Pattern Anal Mach Intell. 1985 Jan;7(1):121-7. doi: 10.1109/tpami.1985.4767628.

DOI:10.1109/tpami.1985.4767628

Abstract

In a recent paper,1 Haralick published an edge detection scheme that was supported, in part, by an evaluation against the Prewitt and the Marr-Hildreth (¿2G) operators. This evaluation led to the conclusion that Haralick's method performed the best, and the ¿2G operator performed the worst. The implementation of the ¿2G operator, on which this evaluation was based, differed significantly from that used by Marr and Hildreth. Evaluation of the performance of the Marr-Hildreth implementation of the ¿2G operator on similar images shows that this edge detection method in fact performs comparably to the Prewitt and Haralick operators.

摘要

在最近的一篇论文中，1 Haralick 发表了一种边缘检测方案，该方案部分得到了对 Prewitt 和 Marr-Hildreth（¿2G）算子的评估的支持。该评估得出的结论是 Haralick 的方法表现最好，而¿2G 算子表现最差。该评估所依据的¿2G 算子的实现与 Marr 和 Hildreth 使用的实现有很大的不同。对类似图像上的 Marr-Hildreth 实现的¿2G 算子的性能进行评估表明，这种边缘检测方法实际上与 Prewitt 和 Haralick 算子的性能相当。