Video coding for digital cinema
In this paper, we present several techniques to improve the efficiency of motion-compensated 3-D subband/wavelet video coding for digital cinema (DC). Since DC data coming from scanning photographic film contains film-grain noise, we introduce one level spatial subband decomposition to reduce the noise, and impose motion-compensated temporal filtering (MCTF) only on the spatial LL subbands. Also we make the GOP size adaptive to better handle motion complexity and editing effects. In order to realize approximately constant quality in a full length motion picture, we propose to interleave the subbands of the temporal frames, and encode all the GOPs to the same fractional bit plane using the EZBC coder.