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Mat element wise multiplication 8UC1 x 8UC3

asked 2017-01-26 22:53:11 -0500

Nbb gravatar image

How do i multiple an single channel mat with a 3 channel mat element wise ?

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answered 2017-01-27 01:35:51 -0500

berak gravatar image

both Mat's need the same number of channels for this, so you have to convert the 8UC1 one:

Mat uc1 = ...
Mat uc3;
cvtColor(uc1, uc3, COLOR_GRAY2BGR);

Mat res;
multiply(mat, uc3, res, CV_16UC3); // choose larger depth, to avoid saturation !
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Asked: 2017-01-26 22:53:11 -0500

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Last updated: Jan 27 '17