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Fill a matrix

asked 2013-02-26 09:06:09 -0500

Tom Sgouros gravatar image

What is the easiest way to fill a cv::Mat object with scalars of a single value?

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answered 2013-02-26 09:59:17 -0500

You can use matrix multiplication for single channel, or setTo function for multiple channels:

cv::Mat mat = cv::Mat::ones(rows,cols,CV_8UC1);
mat *= 12; // to set all values to 12
std::cout << mat << std::endl;
// To set a multi dimensional matrix
cv::mat mat2 = cv::Mat(rows,cols,CV_8UC2);
mat2.setTo(cv::Scalar(12,12)); // to set all values to 12
std::cout << mat2 << std::endl;
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Asked: 2013-02-26 09:06:09 -0500

Seen: 3,395 times

Last updated: Feb 26 '13