Application of an Improved Method of Wavelet Transform in Image Edge Detection

摘要

Edge detection is widely used to extract and analyze contour and texture feature. This paper focuses on researches of wavelet analysis and the application of its improved method in edge detection. The basic idea of the improved method is that we first preprocess image, and the image texture will be shown when processing it under a uniform threshold, then the texture curve becomes thinner after the morphological processing for the texture is done. Experimental results show that the improved texture is more clearly and accurately under the same threshold and image texture becomes much thinner after morphological preprocessing. The improved method is effective.