METHODS, SYSTEMS AND DEVICES FOR GENERATING UPSAMPLE FILTER AND DOWNSAMPLE FILTER AND FOR PERFORMING ENCODING

摘要

A method for generating an upsample filter and a downsample filter. The method comprises the steps of: upsampling and downsampling the video signal in conformity with Markov Model so as to derive the reconstructed signal; calculating the energy of the reconstructed signal; calculating the parameters of the wavelet filter corresponding to the maximum value of the energy of the reconstructed signal on the basis of the biorthogonal wavelet theory with parameters and the energy of the reconstructed signal, and generating an upsample filter and a downsample filter. Meanwhile, also provided are a method, device and system for performing the spatial scalable video encoding by use of the upsample filter and the downsample filter according to the present invention. With the solution according to the embodiment of the present invention, it is possible to minimize the loss of the encoding energy so that the qulity and performance of the video signal encoding could be improved.