fixed opencv_video tests

modules/video/test/test_main.cpp

 #include "test_precomp.hpp"
 
-//CV_TEST_MAIN("cv")
-
-#if 1
-using namespace cv;
-
-int main(int, char**)
-{
-    Mat prevImg = imread("/Users/vp/work/ocv/opencv_extra/testdata/cv/optflow/rock_1.bmp", 0);
-    Mat nextImg = imread("/Users/vp/work/ocv/opencv_extra/testdata/cv/optflow/rock_2.bmp", 0);
-    FileStorage fs("/Users/vp/work/ocv/opencv_extra/testdata/cv/optflow/lk_prev.dat", FileStorage::READ);
-    vector<Point2f> u, v;
-    Mat _u;
-    fs["points"] >> _u;
-    _u.reshape(2, 0).copyTo(u);
-    vector<uchar> status;
-    vector<float> err;
-    double tmin = 0;
-    
-    for( int k = 0; k < 3; k++ )
-    {
-        double t = (double)getTickCount();
-#if 1
-        calcOpticalFlowPyrLK(prevImg, nextImg, u, v, status, err, Size(11,11),
-                             5, TermCriteria(TermCriteria::MAX_ITER+TermCriteria::EPS, 30, 0.01), 100);
-#else
-        {
-            CvMat _prevImg = prevImg;
-            CvMat _nextImg = nextImg;
-            v.resize(u.size());
-            status.resize(u.size());
-            err.resize(u.size());
-            cvCalcOpticalFlowPyrLK(&_prevImg, &_nextImg, 0, 0, (CvPoint2D32f*)&u[0], (CvPoint2D32f*)&v[0], (int)u.size(),
-                                   cvSize(21, 21), 4, (char*)&status[0],
-                                   &err[0], cvTermCriteria(CV_TERMCRIT_EPS+CV_TERMCRIT_ITER, 30, 0.01), 0);
-        }
-#endif
-        t = (double)getTickCount() - t;
-        tmin = k == 0 ? t : std::min(tmin, t);
-    }
-    printf("time = %gms\n", tmin*1000./getTickFrequency());
-        
-    Mat color;
-    cvtColor(prevImg, color, CV_GRAY2BGR);
-    for( size_t i = 0; i < u.size(); i++ )
-    {
-        Point2f ui = u[i], vi = v[i];
-        if( cvIsNaN(v[i].x) || cvIsNaN(v[i].y) || !status[i] )
-        {
-            const float r = 2.f;
-            line(color, Point2f(u[i].x-r,u[i].y-r), Point2f(u[i].x+r,u[i].y+r), Scalar(0, 0, 255), 1);
-            line(color, Point2f(u[i].x-r,u[i].y+r), Point2f(u[i].x+r,u[i].y-r), Scalar(0, 0, 255), 1);
-            continue;
-        }
-        line(color, ui, vi, Scalar(0, 255, 0), 1);
-    }
-    imshow("flow", color);
-    waitKey();
-    return 0;
-}
-#endif
-
+CV_TEST_MAIN("cv")