Improving the visual quality of JPEG-encoded images via companding.
Manish BakshiDaniel R. FuhrmannPublished in: J. Electronic Imaging (1997)
Keyphrases
- visual quality
- decoded image
- image quality
- high compression ratio
- compressed images
- low bit rate
- lossy compression
- jpeg compressed images
- peak signal to noise ratio
- perceptual quality
- bit rate
- blocking effect
- coded images
- high frequency
- contrast enhancement
- higher psnr
- compression rate
- image data
- reconstructed image
- image compression
- signal noise ratio
- jpeg images
- enhanced image
- human visual system
- image retrieval
- compression ratio
- perceptual distortion
- error concealment
- image features
- compression algorithm
- quality assessment
- test images
- jpeg compression
- subband
- rate control
- pixel values
- image classification
- color restoration