Compressibility Constrained Sparse Representation With Learnt Dictionary for Low Bit-Rate Image Compression.
Mai XuShengxi LiJianhua LuWenwu ZhuPublished in: IEEE Trans. Circuits Syst. Video Technol. (2014)
Keyphrases
- sparse representation
- low bit rate
- image compression
- dictionary learning
- sparse coding
- compression algorithm
- signal processing
- bit rate
- wavelet transform
- compression ratio
- face recognition
- visual quality
- reconstructed image
- image classification
- compressive sensing
- discrete cosine transform
- image quality
- video compression
- image processing
- image patches
- subband
- joint optimization
- dimensionality reduction
- random projections
- coding method
- video conferencing
- image representation
- high dimensional data
- sparse codes
- high quality
- data points
- object recognition
- rate distortion
- sparse approximations