谁能告诉我matlab中以下代码是干嘛用的啊

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;

这个实际上是定义坐标的,貌似.