Image Denoising Algorithm Based on Improved Filter in Contourlet Domain

A contourlet domain image denoising framework based on a novel Improved Rotating Kernel Transformation is proposed, where the difference of subbands in contourlet domain is taken into account. In detail: (1). A novel Improved Rotating Kernel ...

For image denoising, the main challenge is how to preserve the information-bearing structures such as edges and textures to get satisfactory visual quality when improving the signal-to-noise-ratio (SNR). Edge-preserving image denoising has become a very ...

A novel image denoising method based on non-aliasing Contourlet transform(NACT) is presented according to coefficient inter-scale correlation. A noisy image was decomposed into a low frequency approximation sub-image and a series of high frequency ...