摘要
针对HEVC中PU划分模式和帧间运动模式的选择引起的高复杂度，提出一种快速帧间预测算法。首先，判断图像的运动状态和纹理复杂度，根据当前图像的时空域相关性及图像内容的特点，减少PU划分模式。然后，根据运动剧烈程度对当前PU运动模式预判，从而不需要遍历所有的运动模式。实验结果表明，在视频重建质量基本相当的前提下，改进后的算法编码时间与参考算法相比节省30％～60％左右。
In order to solve the high complexity which result from the choice of PU mode and frame movement patterns which is the new technology in HEVC, a fast inter frame Prediction algorithm is proposed in this paper. Firstly, it is determine the movement of images and texture complexity, and reduce PU mode based on the current image in spatial domain correlation and characteristics of image content. Then, according to the characteristics of inter-frame motion mode,it is predict the current PU Motion mode by mo- tion state, and it is not need traverse all of the patterns of motion. Experimental results show that the modified algorithm saves enco- ding time 30% - 60% and video quality loss is negligible.
出处
《电视技术》
北大核心
2016年第7期1-5,10,共6页
Video Engineering
基金
国家自然科学基金项目(61401270)
关键词
HEVC
帧间预测
PU划分模式
运动模式
时空域相关性
运动状态
纹理复杂度
HEVC
inter-frame prediction
prediction unit （ PU ） mode
motion mode
correlation of temporal and spatial
motionstate
texture complexity
