对码本模型中码字结构的改进

针对码本结构, 提出一种简化算法. 该算法通过将码字元组中判断该码字是否冗余的元素--最大未使用时间改为由元组的其他变量直接计算而不存储在码字中, 去除了该变量所占用的空间, 将6元组替换为5元组. 实验结果表明, 该改进不会对运动目标检测增加额外计算, 准确性和实时性不受影响, 并可减少码本模型占用的内存.

Improvement on Codeword Structure in Codebook Model

The codeword space was reduced according to calculating the longest interval so that codeword is never recurred by other variable in tuple,and the interval is not stored in codeword,thus 6-tuple based codeword is replaced by 5-tuple.The experimental result shows that the new codebook model is as fast and accurate as the original model.Moreover,the memory space demanded is reduced.