Image Retrieval Using VQ Index Histograms in Classified DCT Domain.
Ya-Pei FengZhe-Ming LuPublished in: J. Inf. Hiding Multim. Signal Process. (2018)
Keyphrases
- dct domain
- compressed images
- image retrieval
- dct coefficients
- post processing
- transform domain
- spatial domain
- vector quantization
- discrete cosine transform
- image blocks
- digital video
- human visual system
- compressed domain
- image compression
- low pass filtering
- block boundaries
- quantization step
- digital images
- jpeg images
- video transcoding
- low frequency
- image quality
- visual quality
- blocking artifacts
- image representation
- motion estimation
- reference frame
- frequency domain
- high quality