Transrating of MPEG-2 coded video via requantization with optimal trellis-based DCT coefficients modification.
Michael LavrentievDavid MalahPublished in: EUSIPCO (2004)
Keyphrases
- pixel domain
- dct domain
- coded video
- dct coefficients
- compressed domain
- bitstream
- coding scheme
- discrete cosine transform
- transform domain
- macroblock
- digital video
- error concealment
- feature vectors
- post processing
- video quality
- compressed video
- video conferencing
- bit rate
- spatial domain
- compressed images
- jpeg images
- watermarking algorithm
- multiple description coding
- human visual system
- low complexity
- coded images
- blocking artifacts
- video analysis
- compression algorithm
- image blocks
- wavelet domain
- packet loss
- frequency domain
- high quality