DCT Image Denoising: a Simple and Effective Image Denoising Algorithm
Guoshen Yu, Guillermo Sapiro · Image Processing On Line · 2011
This work presents a simple but effective denoising algorithm using a local DCT thresholding. This thresholding is applied separately to each color channel after decorrelation. Due to its simplicity and excellent performance, this contribution can be considered as a baseline for comparison and lower bound of performance for newly developed techniques.