Visual Quality Enhancement in DCT-Domain Spatial Downscaling Transcoding Using Generalized DCT Decimation.
Yuh-Ruey LeeChia-Wen LinPublished in: IEEE Trans. Circuits Syst. Video Technol. (2007)
Keyphrases
- dct domain
- visual quality
- human visual system
- compressed images
- high frequency
- low frequency
- image quality
- bit rate
- contrast enhancement
- dct coefficients
- jpeg compressed images
- reconstructed image
- transform domain
- wavelet domain
- video transcoding
- spatial domain
- pixel domain
- discrete cosine transform
- low bit rate
- post processing
- blocking artifacts
- macroblock
- peak signal to noise ratio
- image processing
- compressed domain
- subjective quality
- rate distortion
- digital video
- visual information
- jpeg images
- high quality
- coding efficiency
- reference frame
- high resolution
- multiresolution