Subband image coding using cosine modulated filter banks with perfect reconstruction and linear phase
Helmut Bölcskei, T. Stranz, Franz Hlawatsch, R. Sucher · 2002
We propose a lossy image coding scheme based on the previously introduced even-stacked cosine modulated filter banks (CMFBs) that allow linear phase filters in all channels. We describe modifications of the JPEG quantization matrix and zig-zag sequence to match the structure of even-stacked CMFBs. We discuss the efficient design of even-stacked CMFBs. The rate-distortion performance and perceptual performance of the proposed transform coder are demonstrated using simulation results.