The Application of Estimation Method Based on Improved Wavelet Coefficients for Image Denoising

Wavelet threshold is a commonly method in image denoising. The paper, based on the analysis and estimation of the standard deviation of image noise, comes up with the wavelet shrinkage image threshold method. The procedure is: first, to make sure the standard deviation of the image noise can be estimated by the two Lap lace templates, second, to design different smaller image denoising algorithm through the definition of signal wavelet transform, finally, to estimate the standard deviation through the denoising images from the simulation results to improve the peak value signal-to-noise ratio and visual effect, and eventually eliminate noise effectively.