Assign values to OpenCv matrix all at once

Asked Jul 03 '13 at 21:05

Active Jul 04 '13 at 20:22

Viewed 522 times

I simply want to set the elements of a matrix to a specific value, without doing deep or even shallow copies.

As far as I’ve understood

myMat = Mat::ones(rows, cols, CV_32SC1)*10;

will allocate space on disk for a new matrix (same data type and dimension in this case), set values, release old data and then make myMat point to the new data. Instead

myMat = 10;

will just set values to the original data, without new allocation and release. It is equivalent to

myMat.setTo(10);

which in turn corresponds to old style:

cvSet(myMat, cvScalar(0));

Am I wrong in some point?

edited Jul 04 '13 at 20:22

bjou

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asked Jul 03 '13 at 21:05

Koleey

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You are right except for the last `cvScalar(_10_)`. That was the only question? – Mikhail Jul 03 '13 at 21:18
Yes it was, but it is very important for me. Thank you. – Koleey Jul 04 '13 at 06:27

Assign values to OpenCv matrix all at once

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