Wavelet-based denoising of images

الملخص EN

Wavelet-analysis has become a powerful tool for denoising images.

It represents a new way to achieve better noise reduction and increased contrast.

Here, experimentally demonstrate abilities of discrete wavelet transform with Daubechies basis functions for improving the quality of noisy images.in this research two methods has been compaired for modify the coefficients using soft and hard threshold to improv the visual fineness of noisy image depend on Root-Mean-Square error (RMS).

The low RMS value and better noise reduction find in soft threshold method which is based on Daubechies wavelet (db8) for first example image RMS=0.101 and second example RMS=0.109.