Experimental results show that it can lessen the time of variable length code output in video encoders. 实验结果表明,该方法能显著缩短视频编码中变字长编码的时间。
The code word of variable length code comprises of prefix and suffix. No code word is a prefix of any other code word in the set. 可变长熵编码的码字由前缀和后缀组成,任何一个码字都不是其他码字的前缀。
Variable length code is a general lossless entropy coding method, which is widely used in video compress standards. 可变长码是视频压缩中常用的熵编码方式,因为码字的长度不固定,可变长码的解码器设计往往是整个视频解码器的难点之一。
Each Variable Length Code(VLC) truth-table whose input is the bit stream code and output is the value and length of code is stored into different PLA respectively. 采用基于PLA的并行算法,在PLA中存储了以编码码字为输入,码值和码长为输出的各个变长码真值表。
We propose an algorithm to reduce the complexity of variable length code output by exploiting register width and shift ability of barrel shifter. 另外提出了一种有效利用CPU寄存器字宽和桶型寄存器移位能力,缩减变字长编码输出运算复杂性的方法。