openCV 3.0.0 cv::vector missing

Question

I'm upgrading from opencv 2.4.11 to 3.0.0 I have used cv::vector in my code <br> but now I get the error vector in not a member of 'cv'

I will start using std::vector instead <br> however I can't find anywhere was it removed or just moved to another header file?

Solution

In OpenCV prior to 3.0, you can see at the beginning of core.hpp that OpenCV is using std::vector internally:

#ifndef __OPENCV_CORE_HPP__
#define __OPENCV_CORE_HPP__

...
#include <vector>
...

/*! \namespace cv
    Namespace where all the C++ OpenCV functionality resides
*/
namespace cv {
...
using std::vector;
...

So you can access std::vector also through cv namespace like:

cv::vector

In fact, internally OpenCV refers to std::vector just as vector.

In OpenCV 3.0 instead the #using std::vector is not present, and internally OpenCV refers always to std::vector.

You'll be able to use cv::vector adding this into your code:

namespace cv
{
    using std::vector;
}