基于小波变换的数字影像的边缘检测与降噪

Edge detection and denoise of digital image based on wavelet transform

目的研究医学数字影像的降噪法,提高临床大夫对医学影像细节的诊断能力。方法采用图像的多尺度小波变换局部模最大值进行空域滤波(主要是边缘检测及降噪)的方法。结果此方法得到了满意的边缘检测和降噪结果,克服了传统方法的缺点。结论此方法降噪能力强,定位精度高。

Objective： To study the denoise of medical digital image and increasing doctor＇s diagnostic ability of image＇s detail. Method： To use muhiscale wavelet transform local max for spacial fultering （especially edge detection and denoise） of image. Result： Good result about edge detection and denoise for image was gained by this way. Conclusion： This way has better efficiency for edge detection and denoise of image.