Low Bit-Rate Image Compression via Adaptive Down-Sampling and Constrained Least Squares Upconversion.
Xiaolin WuXiangjun ZhangXiaohan WangPublished in: IEEE Trans. Image Process. (2009)
Keyphrases
- low bit rate
- image compression
- constrained least squares
- bit rate
- compression algorithm
- subband
- visual quality
- reconstructed image
- video compression
- compression ratio
- wavelet transform
- image processing
- image quality
- video conferencing
- regularized least squares
- coding method
- compressed images
- basis vectors
- high frequency
- learning algorithm
- regularization parameter
- discrete cosine transform
- probabilistic model
- video coding
- sample size
- random sampling