TY - GEN
T1 - A roi quality adjustable rate control scheme for low bitrate video coding
AU - Yang, Ling
AU - Zhang, Li
AU - Ma, Siwei
AU - Zhao, Debin
PY - 2009
Y1 - 2009
N2 - This paper proposed a novel Region of Interest (ROI) based rate control algorithm for video communication systems, in which the subjective quality of ROI can be adjusted according to users' requirements. In the proposed scheme, in order to analyze the relationship between subjective quality and encoding parameters, a Structural Similarity Index Map - quantization parameter (SSIM-QP) model is established. Through this relation, the possible visual quality range of ROI is defined according to the range of ROI QP, which is predicted by rate control algorithm. Then, with interest levels being identified within the visual quality range, resources allocated to ROI is determined. Finally, considering both the quality of ROI and the entire frame, resource allocation is slightly adjusted. Experimental results demonstrate that the subjective visual quality of ROI in our proposed scheme can be adjustable improved compared to the existing rate control algorithms.
AB - This paper proposed a novel Region of Interest (ROI) based rate control algorithm for video communication systems, in which the subjective quality of ROI can be adjusted according to users' requirements. In the proposed scheme, in order to analyze the relationship between subjective quality and encoding parameters, a Structural Similarity Index Map - quantization parameter (SSIM-QP) model is established. Through this relation, the possible visual quality range of ROI is defined according to the range of ROI QP, which is predicted by rate control algorithm. Then, with interest levels being identified within the visual quality range, resources allocated to ROI is determined. Finally, considering both the quality of ROI and the entire frame, resource allocation is slightly adjusted. Experimental results demonstrate that the subjective visual quality of ROI in our proposed scheme can be adjustable improved compared to the existing rate control algorithms.
KW - Rate control
KW - Region of interest
KW - SSIM
UR - https://www.scopus.com/pages/publications/70449633557
U2 - 10.1109/PCS.2009.5167372
DO - 10.1109/PCS.2009.5167372
M3 - 会议稿件
AN - SCOPUS:70449633557
SN - 9781424445943
T3 - 2009 Picture Coding Symposium, PCS 2009
BT - 2009 Picture Coding Symposium, PCS 2009
T2 - 2009 Picture Coding Symposium, PCS 2009
Y2 - 6 May 2009 through 8 May 2009
ER -