Abstract: 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.

Key words: multicore, parallel encoding, Slice partition, H.264 standard

摘要： 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。

关键词: 多核, 并行编码, Slice划分, H.264标准

CLC Number: 

• TP311.52