Just-noticeable difference estimation with pixels in images
Journal of Visual Communication and Image Representation
No-reference noticeable blockiness estimation in images
Image Communication
Spatio-temporal just noticeable distortion profile for grey scale image/video in DCT domain
IEEE Transactions on Circuits and Systems for Video Technology
A fine rate control algorithm with adaptive rounding offsets (ARO)
IEEE Transactions on Circuits and Systems for Video Technology
Perceptually-friendly H.264/AVC video coding
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Journal of Network and Computer Applications
A novel H.264 rate control algorithm with consideration of visual attention
Multimedia Tools and Applications
Saliency detection using joint spatial-color constraint and multi-scale segmentation
Journal of Visual Communication and Image Representation
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We present a method for extracting local visual perceptual cues and its application for rate control of videophone, in order to ensure the scarce bits to be assigned for maximum perceptual coding quality. The optimum quantization step is determined with the rate-distortion model considering the local perceptual cues in the visual signal. For extraction of the perceptual cues, luminance adaptation and texture masking are used as the stimulus-driven factors, while skin color serves as the cognition-driven factor in the current implementation. Both objective and subjective quality evaluations are given by evaluating the proposed perceptual rate control (PRC) scheme in the H.263 platform, and the evaluations show that the proposed PRC scheme achieves significant quality improvement in block-based coding for bandwidth-hungry applications.