Patent ID: 8446949
Filing Date: 2013-05-21
Classification: H04N

Abstract:
1. A distributed coded video decoding apparatus, comprising: a key picture decoding unit for reconstructing key pictures transmitted from an encoding apparatus; a side information generation unit for generating side information using at least one of the key pictures reconstructed by the key picture decoding unit and/or a previously reconstructed Wyner-Ziv (WZ) picture by a video reconstruction unit; a side information update unit for updating the side information using the side information generated by the side information generation unit and a corrected reconstructed WZ picture corrected by a video correction unit; a channel code decoding unit for decoding quantization symbols using parity bits transmitted from the encoding apparatus and the side information from the side information update unit; the video reconstruction unit for reconstructing a current WZ picture, which is a decoding target, using the quantization symbols decoded by the channel code decoding unit and the side information received from the side information update unit; and the video correction unit for calculating reliability of the reconstructed current WZ picture using at least one of channel code decoded data reliability from the channel code decoding unit and a reconstructed video reliability from the video reconstruction unit, determining whether to correct the reconstructed current WZ picture and determining a correction unit based on the calculated reliability of the reconstructed current WZ picture, and then correcting the reconstructed current WZ picture.