任意方向帧内预测  

Unified Directional Intra Prediction

作　　者：陈海燕[1] 

机构地区：[1]华东政法大学计算机科学与技术系,上海201620

出　　处：《电视技术》2012年第3期24-25,47,共3页Video Engineering

基　　金：国家社会科学基金项目(06BFX051);上海高校选拔优秀青年教师科研专项基金

摘　　要：提出一种新的任意方向帧内预测算法。对于任意一个预测角度,首先求出其余切与正切值。然后对于当前编码块内任意一个像素,求出与其在同一个方向上的当前块左边一列和上边一行上像素的坐标,从而求出当前像素的左边一列预测值和上面一行的预测值。两者中与当前像素距离较近的预测值就是当前像素的最终预测值。实验结果表明该算法与角度帧内预测(ADI)相比具有相同或略优的性能。A new unified directional intra prediction is proposed in this paper. Firstly, get the tangent and cotangent of the current prediction angular, then get the coordinates of the two pixels in the left border and the upper border of the current block with the same direction with a certain pixel in the current coding block. The one between the two pixels that is nearer to the current pixel is the prediction of the current pixel. Experiments show that the new unified directional intra prediction is with same or slightly better coding performance when compared to the angular directional prediction （ADI）.

关 键 词：帧内预测 任意方向 角度帧内预测 

分 类 号：TN919.81[电子电信—通信与信息系统]