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Rate Distortion Modeling of Skip Mode and Early Skip Mode Selection for H.264/MPEG-4 AVC
Rate Distortion Modeling Skip Mode Early Skip Mode
2010/12/20
This paper proposed a linear rate-distortion (RD) cost model for skip mode in H.264. The proposed RD cost model is derived theoretically based on the quantization scheme of H.264, and the simulation r...
一种基于八叉树的Huffman解码方法及其在MPEG-4中的应用
数据压缩 Huffman解码 八叉树
2009/4/3
传统的二值Huffman解码方法的解码效率较低。为了提高解码速度，该文提出了一种基于八叉树的Huffman解码方法。该方法将Huffman码表示为八叉树结构，并根据各个节点在树中的位置将码表重建为一维数组。解码时，每次从码流中读取3 bit码元，并使用数值计算代替判断和跳转操作，从而提高了解码效率。将本文方法应用于MPEG-4 VLC和RVLC解码的实验结果表明，该方法在内存增加不大的情况下能大幅...
Reducing Spatial Resolution for MPEG-2 to H.264/AVC Transcoding
Reducing Spatial Resolution MPEG-2 to H.264/AVC Transcoding
2010/12/15
Transcoding is an important technique for reducing the bit rate or spatial resolution to meet the constrained transmission bandwidths and terminal capabilities. In this paper, we propose a spatial dow...
MPEG Transcoding For DVD recording.