在openCV 2.4.2上的calcOpticalFlowPyrLK

Question

I have some problem with new calcOpticalFlowPyrLK function on opencv 2.4.2. This is my old function and parameters :

calcOpticalFlowPyrLK(prevImg, currentImg, prevPts, nextPts, status, err, Size(15,15),3, TermCriteria(TermCriteria::COUNT+TermCriteria::EPS, 100, 0.02),OPTFLOW_USE_INITIAL_FLOW,0.0001);

It works with OpenCV 2.4.1 but now i try to use it on OpenCV 2.4.2 .It gives this error:

/src/NaturalFeatureRecognition/OpticalFlowTracker.cpp:164: error: undefined reference to 'cv::calcOpticalFlowPyrLK(cv::_InputArray const&, cv::_InputArray const&, cv::_InputArray const&, cv::_OutputArray const&, cv::_OutputArray const&, cv::_OutputArray const&, cv::Size_<int>, int, cv::TermCriteria, int, double)'

Answer 1

确保在项目设置中链接了所有OpenCV库-我不认为此函数的原型在新的OpenCV版本中已更改。

Answer 2

您忘记将此添加为标题：

#include <opencv2/video/tracking.hpp>

Answer 3

在我的情况下（Opencv2.4.8 + QT）我必须在项目的pro-file中添加libopencv_video248.dll.a的路径： LIBS += C:\\\\Opencv2.4.8\\\\install\\\\x64\\\\mingw\\\\lib\\\\libopencv_video248.dll.a