Adaptive Clipping in JEM

This paper presents an adaptive clipping technique with optimized syntax in the video coding Joint Exploratory Model (JEM), which exploits the signal characteristics of the video sequence. The component-wise clipping bounds are coded for each slice. Two encoding methods leveraging the efficiency of...

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Bibliographic Details
Main Authors: Galpin, Franck, Bordes, Philippe, Racape, Fabien
Format: Conference Proceeding
Language:English
Subjects:
Adaptation models
clipping
Computational modeling
Decoding
Distortion
Encoding
HEVC
JEM
Quantization (signal)
residuals
Syntactics
video compression
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Description
Summary:This paper presents an adaptive clipping technique with optimized syntax in the video coding Joint Exploratory Model (JEM), which exploits the signal characteristics of the video sequence. The component-wise clipping bounds are coded for each slice. Two encoding methods leveraging the efficiency of the proposed technique are then described. The first one consists in modeling the errors induced by the clipping process in the Rate Distortion Optimization. The second one aims at reducing the cost of transform coefficients by smoothing the residuals. Finally, experimental results are provided and several variants are discussed.
ISSN:2375-0359
DOI:10.1109/DCC.2017.36