www.gusucode.com > vision 源码程序 matlab案例代码 > vision/ComputeAnIntegralImageExample.m
%% Compute an Integral Image % Compute the integral image and use it to compute the sum of pixels over a rectangular region of an intensity image. %% % Create an image matrix. I = magic(5) %% % Define rectangular region as [startingRow, startingColumn, endingRow, endingColumn]. [sR sC eR eC] = deal(1,3,2,4); %% % Compute the sum over the region using the integral image. J = integralImage(I); regionSum = J(eR+1,eC+1) - J(eR+1,sC) - J(sR,eC+1) + J(sR,sC)