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In this paper, a novel frame-level dependent bit allocation (DBA) method is proposed. Our contribution is two-fold: First, the dependency between adjacent frames is quantitatively measured by the introduced inter-frame dependency model(IFDM). The IFDM not only holds for slow video sequences, but remains valid for video sequences of median and high motion as well. Second, based on the IFDM, the conventional...
Rate-distortion (-) optimized mode decision plays an essential role in H.264/AVC encoding. Among all the possible coding modes, it aims to select the one which has the best trade-off between bitrate and compression distortion. Specifically, this tradeoff is tuned through the choice of the Lagrange multiplier. However, in the H.264 reference software, the value of Lagrange multiplier...
H.264/AVC employs intra prediction to reduce spatial redundancy between neighboring blocks. Different directional prediction modes are used to cater diversified video content. Although it achieves quite high coding efficiency, it is desirable to establish a proper theoretical quantization error model under different prediction modes, since this allows us to explain the behavior of existing codecs...
Accurate statistical distribution for estimating the transformed residues is greatly important for us to analyze the rate-distortion behavior of video encoders. However, the previous work pays more attention to those sequences of low-resolution. In this paper, we address the statistical characteristics of DCT coefficients of high-definition videos coded by H.264/AVC. The contribution of this paper...
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