mirror/opencv
1
0
Fork 0
mirror of https://github.com/opencv/opencv.git synced 2025-01-18 14:13:15 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #801 from kirill-kornyakov:lkdemo-fix

Browse Source
This commit is contained in:
Andrey Kamaev 2013-04-12 14:59:11 +04:00 committed by OpenCV Buildbot
commit b696d49d5a
1 changed files with 8 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
samples/cpp/lkdemo.cpp
View File

@ -12,9 +12,8 @@ static void help()
{
// print a welcome message, and the OpenCV version
cout << "\nThis is a demo of Lukas-Kanade optical flow lkdemo(),\n"
"Using OpenCV version %s\n" << CV_VERSION << "\n"
<< endl;
"Using OpenCV version " << CV_VERSION << endl;
cout << "\nIt uses camera by default, but you can provide a path to video as an argument.\n";
cout << "\nHot keys: \n"
"\tESC - quit the program\n"
"\tr - auto-initialize tracking\n"
@ -30,15 +29,17 @@ static void onMouse( int event, int x, int y, int /*flags*/, void* /*param*/ )
{
if( event == CV_EVENT_LBUTTONDOWN )
{
point = Point2f((float)x,(float)y);
point = Point2f((float)x, (float)y);
addRemovePt = true;
}
}
int main( int argc, char** argv )
{
help();
VideoCapture cap;
TermCriteria termcrit(CV_TERMCRIT_ITER|CV_TERMCRIT_EPS,20,0.03);
TermCriteria termcrit(CV_TERMCRIT_ITER|CV_TERMCRIT_EPS, 20, 0.03);
Size subPixWinSize(10,10), winSize(31,31);
const int MAX_COUNT = 500;
@ -56,8 +57,6 @@ int main( int argc, char** argv )
return 0;
}
help();
namedWindow( "LK Demo", 1 );
setMouseCallback( "LK Demo", onMouse, 0 );
@ -134,17 +133,16 @@ int main( int argc, char** argv )
needToInit = true;
break;
case 'c':
points[0].clear();
points[1].clear();
break;
case 'n':
nightMode = !nightMode;
break;
default:
;
}
std::swap(points[1], points[0]);
swap(prevGray, gray);
cv::swap(prevGray, gray);
}
return 0;