Reducing Image Compression Artifacts by Structural Sparse Representation and Quantization Constraint Prior.
Chen ZhaoJian ZhangSiwei MaXiaopeng FanYongbing ZhangWen GaoPublished in: IEEE Trans. Circuits Syst. Video Technol. (2017)
Keyphrases
- sparse representation
- image classification
- image representation
- test images
- compression artifacts
- reconstruction error
- input image
- image data
- sparse coefficients
- sparse coding
- dictionary learning
- multiscale
- face recognition
- image features
- single image
- image patches
- random projections
- high resolution
- joint optimization
- natural images
- image quality
- image retrieval
- image segmentation
- high dimensional data
- data sets
- signal processing
- dimensionality reduction
- pattern recognition