Summed-Area Variance Shadow Maps 区域求和的方差阴影图
local area variance 局部方差
variance of area gray-scale 区域灰度方差
Area general variance function is obtained according to nesting theory.
借助套合理论建立区域性通用变异函数。
However, for the composite load has the characteristics of complex composition, random time variance and spread over different area, its exact mathematics model is still not built up.
然而，系统中的综合负荷，由于具有构成复杂、随机时变、地域分散等特点，其准确的数学模型一直没有建立起来。
The algorithm mainly controls the size of the smoothing area and the mean variance threshold to select the maximum correlation area containing minimum noise interference.
该算法主要通过控制平滑区域大小和均方差阈值来选择受噪声干扰最小和最大相关区域。
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