Fast motion vector re-estimation for transcoding MPEG-1 into MPEG-4 with lower spatial resolution in DCT-domain.
Kwang-deok SeoJae-kyoon KimPublished in: Signal Process. Image Commun. (2004)
Keyphrases
- compressed domain
- dct domain
- motion vectors
- spatial resolution
- pixel domain
- compressed video
- video transcoding
- video sequences
- motion estimation
- dct coefficients
- macroblock
- motion compensation
- bitstream
- bit rate
- frame rate
- video coding
- compressed images
- image reconstruction
- reference frame
- video data
- high resolution
- video analysis
- inter frame
- block matching
- motion field
- digital video
- video objects
- video coding standard
- reconstructed image
- error concealment
- low resolution
- computational complexity
- spatial information
- post processing
- coding efficiency
- video compression
- video quality
- subband
- rate distortion
- visual quality
- blocking artifacts
- super resolution
- spatial domain