Mat element access

813 ●9 ●22 ●39

I read this article, but I can't find how to access Mat element like this

img[y][x]=100;

is it possible? And another question is how can I don't omit type of Mat, but check types on compilation time.

instead of

img.at<uchar>(i,j)

something like this

img[i][j]

1 answer

Sort by » oldest newest most voted

4775 ●4 ●24 ●62

You can use template version of Mat:

Mat_<Vec3b> bgrMat;
bgrMat(y, x) = Vec3b(0,0,0);
Vec3b* row = bgrMat[y] // pointer to mat row

So I can access pixel like bgrMat(y, x) = Vec3b(B,G,R); ?

mrgloom ( 2012-09-05 01:09:27 -0600 )edit

Yes, for Mat_<Vec3b>.

Vladislav Vinogradov ( 2012-09-05 01:29:58 -0600 )edit

Asked: 2012-09-04 04:19:57 -0600

Seen: 3,392 times

Last updated: Sep 04 '12