HIGH COMPRESSION IMAGE-CODING USING AN ADAPTIVE MORPHOLOGICAL SUBBANDDECOMPOSITION

In this paper a morphological subband decomposition with perfect recon struction is proposed. Critical subsampling is achieved. Reconstructed images using this decomposition do not suffer from any ringing effect . In order to avoid poor texture representation by morphological filte rs an adaptive subband decomposition is introduced. It chooses linear filters on textured regions and morphological filters otherwise. A sim ple and efficient texture detection criterion is proposed and applied to the adaptive decomposition. Comparisons to other coding techniques such as JPEG and linear subband coding show that the proposed scheme p erforms significantly better both in terms of PSNR and visual quality.