Keyphrases
- quantization table
- image quality
- jpeg images
- step size
- quantization step
- adaptive quantization
- bits per pixel
- huffman coding
- image coder
- jpeg compression
- discrete cosine transformation
- image compression
- image coding
- low bit rate
- databases
- coding method
- entropy coding
- compression algorithm
- compression ratio
- compressed domain
- transform coding
- discrete cosine transform
- database
- mobile devices
- quantization error
- dct coefficients
- frequency domain
- urban environments
- dct domain
- transform coefficients
- navigation systems
- arithmetic coding
- subband coding
- human visual system
- subband image coding
- subband
- feature vectors