Sparse optimization with directional DCT bases for image compression.
Angélique DremeauCédric HerzetChristine GuillemotJean-Jacques FuchsPublished in: ICASSP (2010)
Keyphrases
- image compression
- discrete cosine transform
- vector quantization
- low bit rate
- wavelet transform
- reconstructed image
- subband
- compression scheme
- compression ratio
- karhunen loeve transform
- compression algorithm
- image processing
- optimization algorithm
- high dimensional
- discrete cosine transformation
- entropy coding
- optimization problems
- sparse data
- compression standards
- sparse pca
- run length coding
- dct coefficients
- compressed images
- subband coding
- transform coding
- joint optimization
- sparse coding
- visual quality
- optimization method