Wavelet transform has its unique advantage in image processing
which analyze image subtly. Different from wavelet transform
computation using partial differential equations need to be iterated again and again. It deals with the image us a whole in the whole course. It can not only remove noise but also keep details of image. Combining with two methods
drawbacks will be overcome and better effect can be achiered. A nonlinear method for combining wavelet transform with nonlinear scale diffusion is proposed. By using the properties of time-frequency of wavelet transform and enhancing edges of nonlinear scale diffusion