Fast and memory efficient algorithm for DCT-domain inverse motion compensation of low bitrate video

Author

Chen, William ; Vasudev, Bhaskaran

Author_Institution

Epson Palo Alto Lab., CA, USA

Volume

1

fYear

2002

fDate

2002

Firstpage

121

Abstract

We implement a complete compressed domain video decoding pipeline that is optimized for both fast and memory efficient decoding. We combine fast DCT-domain inverse motion compensation algorithms with memory compression methods that take advantage of the sparse number of nonzero DCT coefficients within a coded block. We integrate these into an H.263 and MPEG-4 simple profile video decoder. We measure the performance of our video decoder along three dimensions: computational complexity, memory efficiency, and PSNR.

Keywords

decoding; discrete cosine transforms; inverse problems; motion compensation; video signal processing; DCT-domain inverse motion compensation; H.263 video decoder; MPEG-4 video decoder; PSNR; compressed domain video decoding pipeline; computational complexity; fast DCT-domain inverse motion compensation algorithms; low bitrate video; memory compression methods; memory efficiency; memory efficient decoding; nonzero DCT coefficients; Bit rate; Decoding; Discrete cosine transforms; Laboratories; MPEG 4 Standard; Motion compensation; PSNR; Pipelines; Transform coding; Video compression;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing, 2002. DSP 2002. 2002 14th International Conference on

Print_ISBN

0-7803-7503-3

Type

conf

DOI

10.1109/ICDSP.2002.1027846

Filename

1027846