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谁能告诉我matlab中以下代码是干嘛用的啊

CurHist = zeros(Bin,1);%%%生成一个一列的列向量其中元素全为零 T = InitRect1(2); B = InitRect1(4); L = InitRect1(1); R = InitRect1(3); for j=1:Bin CurHist(j,1) = IntHist(B,R,j); if (T-1) > 0 CurHist(j,1) = CurHist(j,1) - IntHist(T-1,R,j); end if (L-1) > 0 CurHist(j,1) = CurHist(j,1) - IntHist(B,L-1,j); end if ((T-1) > 0) && ((L-1) > 0) CurHist(j,1) = CurHist(j,1) + IntHist(T-1,L-1,j); end end CandBackHist = CurHist - CandForeHist; SumCandBackHist = repmat(sum(CandBackHist, 1), Bin, 1); CandBackDensity = CandBackHist ./ SumCandBackHist;
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