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A Kind of Edge Detection Algorithm with Edge-Preserving Characteristics

本站小编 哈尔滨工业大学/2019-10-24

A Kind of Edge Detection Algorithm with Edge-Preserving Characteristics

Zheng Dou1, Peng-Yu Shi1,2, Yun Lin1

(1. Institute of Information and Communications Engineering, Harbin Engineering University, Harbin 150001, China; 2.Unit 92493 of People′s Libration Army, Liaoning Huludao 102249, China)



Abstract:

Traditional Sobel algorithm is deeply influenced by Gaussian noise, therefore, before boundary extraction, mean filter should be done. But the filtering process is always over-smooth images’ details of certain directions, so that images’ edges will not be extracted correctly. Aiming at this problem, this paper puts forward a detection algorithm based on edge-preserving characteristics, by matching edge mould of different directions to definite edge preserving directions. Instead of the mean filter process, this algorithm improves the performance of traditional algorithms, and provides the simulation results. The experiment results prove that this algorithm preserves more images’ edge information when canceling noise.

Key words:  variance  measure  image fusion  wavelet transformation  multi-resolution analysis

DOI:10.11916/j.issn.1005-9113.2013.02.016

Clc Number:TP391.9

Fund:


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