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Mat element access

asked 2012-09-04 04:19:57 -0500

mrgloom gravatar image

updated 2015-12-27 07:53:40 -0500

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]
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answered 2012-09-04 04:48:58 -0500

Vladislav Vinogradov gravatar image

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

mrgloom gravatar imagemrgloom ( 2012-09-05 01:09:27 -0500 )edit

Yes, for Mat_<Vec3b>.

Vladislav Vinogradov gravatar imageVladislav Vinogradov ( 2012-09-05 01:29:58 -0500 )edit
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Asked: 2012-09-04 04:19:57 -0500

Seen: 1,692 times

Last updated: Sep 04 '12