Fast motion vector refinement for MPEG-1 to MPEG-4 transcoding with spatial down-sampling in DCT domain.
Kwang-deok SeoJae-kyoon KimPublished in: ICIP (1) (2001)
Keyphrases
- compressed domain
- dct domain
- motion vectors
- pixel domain
- motion estimation
- compressed video
- video transcoding
- dct coefficients
- video sequences
- macroblock
- motion compensation
- compressed images
- bit rate
- video coding
- bitstream
- video analysis
- compression standards
- reference frame
- video data
- error concealment
- video objects
- computational complexity
- block matching
- coding efficiency
- motion field
- computer vision
- prediction error
- video coding standard
- block size
- inter frame
- optical flow
- three dimensional
- discrete cosine transform