VIDEO SIGNAL HIERARCHY DECODER, VIDEO SIGNAL HIERARCHY DECODING METHOD, AND VIDEO SIGNAL HIERARCHY DECODING PROGRAM

摘要

PROBLEM TO BE SOLVED: To increase the prediction efficiency between resolutions in video hierarchy decoding.;SOLUTION: An extract section 109 divides a bit stream for outputting to a base layer decoding section 110 and an enhancement layer decoding section 112. A high resolution estimation signal restoring section 111 refers to a quantization parameter obtained in base layer decoding to restore a high resolution estimation signal from a base layer decoding signal to output the signal to the enhancement layer decoding section 112. At the enhancement layer decoding section 112, the bit stream obtained from the extract section 109 and the high resolution estimation signal outputted from the high resolution estimation signal restoring section 111 are supplied, the bit stream is decoded, and a signal obtained there and the high resolution estimation signal are used to decode a signal having the space resolution of an original video signal.;COPYRIGHT: (C)2008,JPO&INPIT