matlab找出图像（矩阵）中某个元素，并验证

matlab找出图像（矩阵）中某个元素，并验证

OriginImg = imread("test.png");  % 一种思路是找出黑白目标点，另一种是直接全局目标
OriginImg = double(rgb2gray(OriginImg));
OriginImg = 1 - OriginImg/255;  % 颜色反转   其实像素位置已经有了

ImgTargetInd = find(OriginImg==1);
[row, col] = ind2sub(size(OriginImg), ImgTargetInd)

yanzhengImg = ones(50,50);

for yanzhengi = 1:length(row)
        yanzhengImg(row(yanzhengi),col(yanzhengi))=0;  % perfect !
end