计算机应用与软件2017，Vol.34Issue(5)：229-233,5.DOI:10.3969/j.issn.1000-386x.2017.05.040
基于深度预测的HEVC编码单元快速划分算法
FAST PARTITION ALGORITHM FOR HEVC CODING UNIT BASED ON DEPTH PREDICTION
摘要
Abstract
A rate-distortion optimization method with high computational complexity is used for CU (coding unit)mode decision in HEVC (High Efficiency Video Coding), which has high time complexity and needs a long encoding time.In order to decrease the coding complexity of HVEC and accelerate the coding speed, a CU fast partition algorithm based on depth prediction is proposed.First, according to the depth correlation between the current CU and the surrounding CU and the current position CU in the reference frame, the optimal depth of the current CU is predicted.Then, the adjacent splitting method or partition decisions based on the relationship between the current depth and the predict depth of the current CU are used to split recursively the current CU.In order to reduce the misjudgment caused by the prediction, in the CU depth level by the two to three levels of division, we use rate distortion or percentage of the way to determine again.Experimental results show that compared with the original HEVC coding method, the algorithm reduced the coding time by 37.7％ when the peak signal-to-noise ratio is reduced by 0.07 dB and the coding bit rate is increased by 0.88％, which has high time efficiency.关键词
高效视频编码(HEVC)/深度预测/快速划分/编码单元(CU)Key words
High efficiency video coding (HEVC)/Depth prediction/Fast partition/Coding unit (CU)分类
信息技术与安全科学引用本文复制引用
赵宏,蒋雨晨,李靖波..基于深度预测的HEVC编码单元快速划分算法[J].计算机应用与软件,2017,34(5):229-233,5.基金项目
国家自然科学基金项目(61262016) （61262016）
甘肃省高校基本科研基金项目(14-0220) （14-0220）
甘肃省自然科学基金项目(1208RJZA239). （1208RJZA239）
