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00025 #include <QList>
00026 #include <QPointF>
00027
00028 #include <qvdta.h>
00029 #include <qvip.h>
00030 #include <QVPolylineF>
00031
00032 #include <QVHarrisPointDetector>
00033
00034 #ifndef DOXYGEN_IGNORE_THIS
00035 QVHarrisPointDetector::QVHarrisPointDetector(QString name): QVWorker(name)
00036 {
00037 addProperty< QVImage<uChar,3> >("Input image", inputFlag|outputFlag);
00038
00039 addProperty< QList < QPointF > >("Feature locations", outputFlag);
00040 addProperty< int >("Max number of corners", inputFlag, 300, "Maximal number of corners to detect", 10, 1000);
00041
00042 addProperty< double >("Threshold", inputFlag, 1.0, "window size ", 0.0, 256.0);
00043 }
00044
00045 void QVHarrisPointDetector::iterate()
00046 {
00047
00048 const QVImage<uChar> image = getPropertyValue< QVImage<uChar,3> >("Input image");
00049 const double threshold = getPropertyValue<double>("Threshold");
00050 const int pointNumber = getPropertyValue<int>("Max number of corners");
00051 timeFlag("grab Frame");
00052
00053
00054 QVImage<sFloat> cornerResponseImage(image.getRows(), image.getCols());
00055 FilterHessianCornerResponseImage(image, cornerResponseImage);
00056 timeFlag("Corner response image");
00057
00058
00059 QList<QPointF> hotPoints = GetMaximalResponsePoints3(cornerResponseImage, threshold);
00060 timeFlag("Local maximal filter");
00061
00062
00063
00064 setPropertyValue< QList<QPointF> >("Feature locations", hotPoints.mid(MAX(0,hotPoints.size() - pointNumber)));
00065 }
00066 #endif