H.264帧内预测模式选择快速算法的研究

H.264 INTRA PREDICTION MODE SELECTION FAST ALGORITHM STUDY

提出一种适用于H.264帧内预测的快速算法,利用相邻像素间的梯度筛选预测模式来避免不必要的预测模式计算。实验结果表明:用全I帧编码,该算法在图像质量和输出码率基本不变的情况下,编码时间大约节省了60%。

The paper presents a fast algorithm suitable for H.264 intra prediction.It takes advantage of gradient filtration prediction mode between neighbouring pixels to avoid unnecessary prediction mode calculations.Experimental results show that,when coded totally in I frame,the algorithm saves about 60% coding time while the image quality and the output rate are almost unchanged.