A perceptually optimized JPEG-LS coder for color images
SPPR'07 Proceedings of the Fourth conference on IASTED International Conference: Signal Processing, Pattern Recognition, and Applications
No-reference noticeable blockiness estimation in images
Image Communication
A perceptually relevant no-reference blockiness metric based on local image characteristics
EURASIP Journal on Advances in Signal Processing
Spatio-temporal just noticeable distortion profile for grey scale image/video in DCT domain
IEEE Transactions on Circuits and Systems for Video Technology
A novel analytic quantization-distortion model for hybrid video coding
IEEE Transactions on Circuits and Systems for Video Technology
Perception-oriented video coding based on foveated JND model
PCS'09 Proceedings of the 27th conference on Picture Coding Symposium
Adaptive Block-Size Transform Based Just-Noticeable Difference Profile for Images
PCM '09 Proceedings of the 10th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
A perceptually optimized JPEG-LS coder for color images
SPPRA '07 Proceedings of the Fourth IASTED International Conference on Signal Processing, Pattern Recognition, and Applications
Fast JND-based video carving with GPU acceleration for real-time video retargeting
IEEE Transactions on Circuits and Systems for Video Technology
A simplified human vision model applied to a blocking artifact metric
CAIP'07 Proceedings of the 12th international conference on Computer analysis of images and patterns
High capacity watermarking in nonedge texture under statistical distortion constraint
ACCV'07 Proceedings of the 8th Asian conference on Computer vision - Volume Part I
Modeling the masking effect of the human visual system with visual attention model
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Perceptually-friendly H.264/AVC video coding
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
A perceptually tuned watermarking scheme for color images
IEEE Transactions on Image Processing
Perceptual visual quality metrics: A survey
Journal of Visual Communication and Image Representation
Mobile JND: environment adapted perceptual model and mobile video quality enhancement
Proceedings of the 3rd Multimedia Systems Conference
Multiresolution, perceptual and vector quantization based video codec
Multimedia Tools and Applications
Perceptual auto-regressive texture synthesis for video coding
Multimedia Tools and Applications
Perceptual watermarking using a new Just-Noticeable-Difference model
Image Communication
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We present a motion-compensated residue signal preprocessing scheme in video coding scheme based on just-noticeable-distortion (JND) profile. Human eyes cannot sense any changes below the JND threshold around a pixel due to their underlying spatial/temporal masking properties. An appropriate (even imperfect) JND model can significantly help to improve the performance of video coding algorithms. From the viewpoint of signal compression, smaller variance of signal results in less objective distortion of the reconstructed signal for a given bit rate. In this paper, a new JND estimator for color video is devised in image-domain with the nonlinear additivity model for masking (NAMM) and is incorporated into a motion-compensated residue signal preprocessor for variance reduction toward coding quality enhancement. As the result, both perceptual quality and objective quality are enhanced in coded video at a given bit rate. A solution of adaptively determining the parameter for the residue preprocessor is also proposed. The devised technique can be applied to any standardized video coding scheme based on motion compensated prediction. It provides an extra design option for quality control, besides quantization, in contrast with most of the existing perceptually adaptive schemes which have so far focused on determination of proper quantization steps. As an example for demonstration, the proposed scheme has been implemented in the MPEG-2 TM5 coder, and achieved an average peak signal-to-noise (PSNR) increment of 0.505 dB over the twenty video sequences which have been tested. The perceptual quality improvement has been confirmed by the subjective viewing tests conducted.