Orientation adaptive subband coding of images

A subband coding scheme is proposed. It utilizes orientation of local image features to avoid the highly objectionable Gibbs-like phenomena observed at reconstructed image edges with conventional subband schemes at low bit rates. At comparable bit rates, the subjective image quality obtained by the authors´ orientation adaptive scheme is considerably enhanced over a conventional separable subband coding scheme, as well as other separable approaches, such as the JPEG compression standard