Wavelet coding with fractal for image sequences
Meng Wu · 2002
Based on the underlying performance of fractals and DWT, one new method using fractal-based self-quantization coding to code different subband coefficients of DWT is presented. Within this method we define a kind of mapping structure for parent-child nodes of wavelet coefficients so that finer coefficients can be fractal encoded according to the successive coarser ones. On the other hand, with respect to the HVS model, we assign different error thresholds to different scales and different shape of range blocks to different orientations of the same scale, by which the perceptually lossless high compression ratio can be achieved and the matching process can be quickened dramatically.