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ISCAS
2006
IEEE

Towards rate-distortion tradeoff in real-time color video coding

14 years 4 months ago
Towards rate-distortion tradeoff in real-time color video coding
—In this paper, we address the key problem in real-time video coding, the rate-distortion (R-D) tradeoff. As most video coding applications employ color images, we analyze the R-D modeling problem of the color image sequence. We investigate that the R-D characteristics of color video signal in traditional transform-based video coding systems should be modeled for the luminance and chrominance components separately. So we propose separable R-D models for color video coding. The feedback from the encoder buffer is analyzed by a control-theoretic adaptation approach to avoid buffer overflow and underflow. To achieve smooth video quality and satisfy the delay constraints in real-time applications, a novel R-D tradeoff controller is designed. In the proposed R-D tradeoff framework, both the quality variation and buffer safety are considered. Extensive simulation results demonstrate that the proposed approach can achieve smooth video quality without sacrificing overall quality while ef...
Zhenzhong Chen, King Ngi Ngan
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where ISCAS
Authors Zhenzhong Chen, King Ngi Ngan
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