cv::Mat dst(src.size(), src.type());
I want to make sure the memory of the dst is continuous(without padding), how could I do that?
The most easiest answer is call the reshape after creation.
dst.reshape(0);
But how could I make sure it is continuous when construct?
there are 3 cases, where you'd get non-continuous Mat's.
since you have to reorder the memory in all those cases, checking for continuity and a clone() acll will solve it.
if ( ! mat.isContinuous() )
{
mat = mat.clone();
}
May I say the cv::Mat will allocate continuous memory for me if I construct it like this "cv::Mat dst(src.size(), src.type());"?
First, reshape() does not performs any copy of memory. So if the memory wasn't continuous it will stay this way.
Second, Mat unlike IplImage allocates continuous memory during its construction unless you ask otherwise. So don't worry about that.
Third, if still do not trust Mat to allocate continuous memory for you, you can allocate it yourself and pass it Mat constructor. Don't forget to release it afterwards. I think this is really an overkill but if you insist....
Asked: 2013-10-20 02:16:36 -0600
Seen: 13,628 times
Last updated: Oct 20 '13
