Image and video denoising by sparse 3D transform-domain collaborative filtering | Block-matching and 3D filtering (BM3D) algorithm and its extensionsImage and video denoising by sparse 3D transform-domain collaborative filtering Block-matching and 3D filtering (BM3D) algorithm and its extensions Abstract We propose a novel image denoising strategy based on an enhanced sparse representation in transform-domain. The enhancement of the sparsity is achieved by grouping similar 2D image fragments (e.g. blocks) into 3D data arrays which we call "gro
