Image enhancement in the 2D DCT domain using a band-adaptive contrast modification
Eduardo Esteves Vale, Abraham Alcaim · 2008
A new algorithm for image enhancement in the two dimensional discrete cosine transform (2D DCT) domain is presented. The proposed scheme uses a band-adaptive contrast modification to enhance a large number of image details. In addition, it avoids noise amplification during the enhancement process. Experiments show the effectiveness of the proposed scheme as compared to other techniques reported in the literature. The new method was applied in the decompression domain of a DCT-based codec.