In C++, we can dynamically create pointer like this:
int nCount = 5; float *fBuffer = new float[nCount];
For OenCV, if we want to allocate 5 Mat as well, shall we call
cv::Mat *MatArray = new cv::Mat(Height,width, 32FC3)[nCount] ?
or how can we achieve it?
Also, do we need to call MatArray.Release()?
Thanks
no, please don't use new with cv::Mat, or raw pointers at all.
cv::Mat is already a smartpointer around the pixels, so passing around pointers to that will for sure wreck the internal refcounts, sooner or later
instead, please use a std::vector , like this:
vector<Mat> imgs(5); // allocate 5 (empty) Mats
for (int i=0; i<5; i++) // load 5 images
imgs[i] = imread(format("my_%d.jpg", i));
// no need to release() the mat's, this will be done automatically
Asked: 2018-06-28 09:52:18 -0600
Seen: 1,344 times
Last updated: Jun 30 '18