if (rad <= 1)
col = 1 - rad * (1 - col); // increase saturation with radius
else
col *= .75; // out of range
data[2 - b] = (int)(255.0 * col);
}
}
}
}
int main(int, char**)
{
VideoCapture cap;
cap.open(0);
//cap.open("test_02.wmv");
if( !cap.isOpened() )
return -1;
Mat prevgray, gray, flow, cflow, frame;
namedWindow("flow", 1);
Mat motion2color;
for(;;)
{
double t = (double)cvGetTickCount();
cap >> frame;
cvtColor(frame, gray, CV_BGR2GRAY);
imshow("original", frame);
if( prevgray.data )
{
calcOpticalFlowFarneback(prevgray, gray, flow, 0.5, 3, 15, 3, 5, 1.2, 0);
motionToColor(flow, motion2color);
imshow("flow", motion2color);
}
if(waitKey(10)>=0)
break;
std::swap(prevgray, gray);
t = (double)cvGetTickCount() - t;
cout << "cost time: " << t / ((double)cvGetTickFrequency()*1000.) << endl;
}
