H.266/VVC分步全零块判决快速算法

牛伟宏,黄晓峰,祁伟,殷海兵,颜成钢

Fast stepwise all zero block detection algorithm for H.266/VVC

Wei-hong NIU,Xiao-feng HUANG,Wei QI,Hai-bing YIN,Cheng-gang YAN

表 2 全零块和非全零块的不同特征比较

Tab.2 Comparison of different features between AZB and NAZB

量化块 M 系数级特征 TU级特征 上下文级特征 $ {n_0} $ $ {n_1} $ $ \;\beta $ SIG( $ {P_1} $) SIG( $ {P_2} $) SIG( $ {P_3} $) CSBF CBF AZB 64 0.9258 0.0742 0.1537 0.3725 0.3323 0.3546 0.0789 0.2932 AZB 128 0.9383 0.0617 0.1051 0.3729 0.3516 0.3621 0.0826 0.3922 AZB 256 0.9488 0.0512 0.0677 0.3870 0.3586 0.3783 0.0939 0.4193 AZB 512 0.9530 0.0470 0.0426 0.3946 0.3622 0.3825 0.0948 0.4244 NAZB 64 0.8350 0.1337 0.2734 0.5499 0.4958 0.5371 0.1340 0.6625 NAZB 128 0.8602 0.1141 0.2046 0.5467 0.4944 0.5284 0.1267 0.6523 NAZB 256 0.8696 0.1088 0.1473 0.5334 0.4891 0.5209 0.1235 0.6200 NAZB 512 0.8725 0.1061 0.1006 0.5323 0.4879 0.5155 0.1200 0.5648