TY - JOUR
T1 - Reduction of temporal distortion in video coding based on detection of just-noticeable temporal pumping artifact
AU - Gong, Yanchao
AU - Wan, Shuai
AU - Yang, Kaifang
AU - Wu, Hong Ren
AU - Yang, Fuzheng
AU - Li, Bo
N1 - Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - At low bit-rates, video coding under the hierarchical prediction structure induces a temporal distortion known as temporal pumping artifact (TPA) when the quantization parameter cascading strategy is used. TPA manifests itself as a pumping effect visually, due to severe quality fluctuations among adjacent pictures, which seriously affects the perceptual quality of a video. In this work, the causes and perception of the TPA is first analyzed. Then a metric of just-noticeable temporal pumping artifact (JNTPA) is formulated based on characteristics of the human visual system. Based on JNTPA, an efficient algorithm has been devised for TPA reduction (denoted as TRA-JNTPA for short). The experimental results have demonstrated that the proposed JNTPA measure is in line with human perception, and compared with JVT-P014, the proposed TRA-JNTPA achieves significant reduction of the TPA with superior subjective video quality at a given bit-rate.
AB - At low bit-rates, video coding under the hierarchical prediction structure induces a temporal distortion known as temporal pumping artifact (TPA) when the quantization parameter cascading strategy is used. TPA manifests itself as a pumping effect visually, due to severe quality fluctuations among adjacent pictures, which seriously affects the perceptual quality of a video. In this work, the causes and perception of the TPA is first analyzed. Then a metric of just-noticeable temporal pumping artifact (JNTPA) is formulated based on characteristics of the human visual system. Based on JNTPA, an efficient algorithm has been devised for TPA reduction (denoted as TRA-JNTPA for short). The experimental results have demonstrated that the proposed JNTPA measure is in line with human perception, and compared with JVT-P014, the proposed TRA-JNTPA achieves significant reduction of the TPA with superior subjective video quality at a given bit-rate.
KW - Hierarchical prediction structure
KW - Human visual system
KW - Just noticeable temporal pumping artifact
KW - Quantization parameter cascading
KW - Video coding
UR - http://www.scopus.com/inward/record.url?scp=84959109450&partnerID=8YFLogxK
U2 - 10.1016/j.image.2016.01.006
DO - 10.1016/j.image.2016.01.006
M3 - 文章
AN - SCOPUS:84959109450
SN - 0923-5965
VL - 42
SP - 1
EP - 18
JO - Signal Processing: Image Communication
JF - Signal Processing: Image Communication
ER -