Practical R-Q and D-Q Models for Video Rate Control

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概要

• 論文の詳細を見る

• Practical and accurate R-Q (rate-quantization) and D-Q (distortion-quantization) models are presented to describe the R-D (rate-distortion) relationship before encoding a frame. The R-Q model is based on a linear relationship between non-zero level count of the DCT coefficients and the generated bits, while the D-Q model comes from the observation that the ratio Q^2_p/D (QP) can be very accurately approximated by a quadratic function of Qp, where Qp is the quantization parameter used for quantization of DCT coefficients in H.263 video coding standard. Simulation results show that the proposed models estimate the real coding results very accurately.

• 社団法人電子情報通信学会の論文
• 2003-04-01

著者

• KWON Jae

  Division of Skull Base Surgery, Department of Neurosurgery, Dongsan Medical Center, Keimyung Univers

• KIM Jae-kyoon

  Division of Electrical Engineering, Department of Electrical Engineering and Computer Science, Korea

• Lee Myeong-jin

  System Lsi Biz. Samsung Electronics

• Kwon Jae

  Division Of Electrical Engineering Department Of Electrical Engineering And Computer Science Korea A

• Kim Jae-kyoon

  Division Of Electrical Engineering Department Of Electrical Engineering And Computer Science Korea A

• Kim Jae-kyoon

  Division Of Electrical Engineering Department Of Electrical Engineering And Computer Science Korea A

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• Adaptive Video Frame Rate Control over Explicit Rate Networks Based on Channel Rate Prediction
• Practical R-Q and D-Q Models for Video Rate Control
• An Efficient Laplacian-Model Based Dequantization for Uniformly Quantized DCT Coefficients

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