基于高清编码的自适应Slice划分算法

Adaptive Slice Partition Algorithm Based on High Definition Encoding

对于多核高清视频实时编码系统,提出一种自适应Slice划分算法。该算法基于码率控制和熵编码复杂度模型,通过Intra预测得到当前编码图像的纹理复杂度分布,预测编码图像的计算复杂度分布,通过自适应Slice划分实现多核间计算复杂度均匀分配,从而提高多核并行编码效率。实验结果表明,与固定宏块数的Slice划分算法相比,该算法能更有效地提高并行加速比。

Aiming at high definition video real-time encoding based on multi-core system, an adaptive slice partition algorithm is proposed.Based on rate control and entropy encoding complexity model,the algorithm performs intra-prediction for current frame to get the distribution of texture complexity,then predicts the distribution of computational complexity,and allocates resources evenly in multi-core system through adaptive slice partition.Experimental results prove this algorithm significantly improves the parallel speedup compared to fixed macroblock slice partition.