Creating an array of Mats of size n

array
#cvMat

asked 2014-04-12 11:55:05 -0600

Luek
127 ●4 ●6 ●13

I am trying to create an array of Mat objects to store images and am getting warnings for using anything other than a statically typed number such as 10

int numberOfRects = boundRect.size();
Mat image_array[numberOfRects];

When I try this code I get an error stating Variable length array of non-POD element type 'cv::Mat'

Same goes for this code: Mat image_array[boundRect.size()];

How can I create an array of Mats based on the size of boundRect?

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answered 2014-04-12 12:43:30 -0600

Guanta
6736 ●6 ●25 ●79

Static arrays need the size for their construction at compile time. If you want to have the size controlled at run-time, you need to either create the mat-array via new or use std::vector (I'd prefer the latter one, since when using new you'll also need to call delete[] and it also prevents you from writing at non existent memory).