面向AVS的全零块预先判决算法  

New all-zero blocks detection algorithm suitable for AVS

作　　者：郭依正[1] 焦蓬蓬[1] 

机构地区：[1]南京师范大学泰州学院信息科学与技术系,江苏泰州225300

出　　处：《计算机工程与应用》2010年第28期208-210,共3页Computer Engineering and Applications

摘　　要：尽管H.264标准的全零系数块检测技术目前已经得到了深入的讨论,但是由于AVS整数变换中使用了8×8块和新的指数阶量化步长的量化器,以往适合于H.264的全零块判别准则并不能直接应用于AVS。根据AVS整数变换的特点,推导出了一种适合于AVS标准的新全零块判别准则。实验结果表明,该准则在保证图像质量的同时尽量防止漏判。The all-zero blocks detection technology in H.264 standard has been discussed in depth,but the use of 8×8 block in AVS integer transform and the use of quantizer which adopted the new exponent rank quantization step,the past all-zero blocks detection algorithm suitable for H.264 can not be directly applied to AVS.According to the features of AVS integer transform,a new all-zero blocks detection algorithm suitable for AVS standard is deduced.The results show that this method can obtain a better image quality,and prevent miss-judgment largely.

关 键 词：视频编码 数字音视频编解码技术标准(AVS) 全零块检测 整数变换 

分 类 号：TN919.8[电子电信—通信与信息系统]