文件名称：DIRECTIONAL-RATIONAL APPROACH FOR COLOR IMAGE ENHANCEMENT
文件大小：81KB
文件格式：PDF
更新时间：2013-02-13 11:48:50
new approach multivariate
In this paper, we present an unsharp masking-based approach for noise smoothing and edge enhancing in multichannel images. The proposed structure is similar to the conventional unsharp masking structure, however, the enhancement is allowed only in the direc- tion of maximal change and the enhancement parameter is com- puted as a nonlinear function of the rate of change. The proposed scheme enhances the true details, limits the overshoot near sharp edges and attenuates noise in flat areas. Moreover the use of the control function eliminates the need for the subjective coefficient used in the conventional unsharp masking technique.