CAJ | 학술논문

提出了一种能够快速实现帧内预测编码的新算法,该算法先利用宏块分割进行宏块边界方向检测,得到图像纹理的方向,只在最可能的几个模式中进行模式选择,从而降低了运算量.对不同的视频测试序列的仿真结果表明,使用该算法后帧内编码时间平均可以减少72.64%.同时保持相近的图像压缩质量和码率水平.
제출료일충능구쾌속실현정내예측편마적신산법,해산법선이용굉괴분할진행굉괴변계방향검측,득도도상문리적방향,지재최가능적궤개모식중진행모식선택,종이강저료운산량.대불동적시빈측시서렬적방진결과표명,사용해산법후정내편마시간평균가이감소72.64%.동시보지상근적도상압축질량화마솔수평.
A tOOl for intra prediction is introduced in the new video coding standard-H.264,and this technique can cut down the spatial redundancy effectively.Though intra prediction can improve the efficiency of the intra encoder,it is undoubtedly computationally intensive.To overcome this drawback,a novel fast intra prediction algorithm is proposed in this paper.By making use of the division of the macro-block,the edge direction is detected first and the direction of texture is estimated.Then the intra mode decision will be made among several most possible modes,which can diminish the number of the calculation..For variable video sequences,simulation results show that with the proposed algorithm the time of the intra coding can be reduced about 72.64%while keeping a close quality and precision.