Video Bitstream Recompression Based on Sparse Representation of DCT Coefficients.
Han WangLuheng JiaZuhai ZhangKebin JiaPublished in: ICCAI (2023)
Keyphrases
- sparse representation
- dct coefficients
- bitstream
- compressed domain
- pixel domain
- jpeg images
- macroblock
- dct domain
- scalable video coding
- compression algorithm
- video analysis
- bit rate
- coding scheme
- discrete cosine transform
- compressed images
- bit budget
- sparse coding
- jpeg compression
- transform domain
- face recognition
- image classification
- video data
- video quality
- feature vectors
- joint optimization
- error resilience
- rate distortion
- motion vectors
- image representation
- video transmission
- video coding
- signal processing
- watermarking algorithm
- test images
- low frequency
- error concealment
- high dimensional data
- spatial domain
- event detection
- video frames
- visual quality
- wavelet coefficients