A kind of edge detection algorithm with edge-preserving characteristics

作者：Dou, Zheng^*; Shi, Peng Yu; Lin, Yun

来源：Journal of Harbin Institute of Technology, 2013, 20(2): 86-89.

• Boundary extraction
• Detection algorithm
• Edge detection algorithms
• Edge information
• Filtering process
• Measure
• Variance
• Wavelet transformations

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.

• 出版日期2013
• 单位哈尔滨工程大学