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

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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
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18
samples/cpp/lkdemo.cpp
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@ -12,9 +12,8 @@ static void help()
{ {
// print a welcome message, and the OpenCV version // print a welcome message, and the OpenCV version
cout << "\nThis is a demo of Lukas-Kanade optical flow lkdemo(),\n" cout << "\nThis is a demo of Lukas-Kanade optical flow lkdemo(),\n"
"Using OpenCV version %s\n" << CV_VERSION << "\n" "Using OpenCV version " << CV_VERSION << endl;
<< endl; cout << "\nIt uses camera by default, but you can provide a path to video as an argument.\n";
cout << "\nHot keys: \n" cout << "\nHot keys: \n"
"\tESC - quit the program\n" "\tESC - quit the program\n"
"\tr - auto-initialize tracking\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 ) if( event == CV_EVENT_LBUTTONDOWN )
{ {
point = Point2f((float)x,(float)y); point = Point2f((float)x, (float)y);
addRemovePt = true; addRemovePt = true;
} }
} }
int main( int argc, char** argv ) int main( int argc, char** argv )
{ {
help();
VideoCapture cap; 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); Size subPixWinSize(10,10), winSize(31,31);
const int MAX_COUNT = 500; const int MAX_COUNT = 500;
@ -56,8 +57,6 @@ int main( int argc, char** argv )
return 0; return 0;
} }
help();
namedWindow( "LK Demo", 1 ); namedWindow( "LK Demo", 1 );
setMouseCallback( "LK Demo", onMouse, 0 ); setMouseCallback( "LK Demo", onMouse, 0 );
@ -134,17 +133,16 @@ int main( int argc, char** argv )
needToInit = true; needToInit = true;
break; break;
case 'c': case 'c':
points[0].clear();
points[1].clear(); points[1].clear();
break; break;
case 'n': case 'n':
nightMode = !nightMode; nightMode = !nightMode;
break; break;
default:
;
} }
std::swap(points[1], points[0]); std::swap(points[1], points[0]);
swap(prevGray, gray); cv::swap(prevGray, gray);
} }
return 0; return 0;