PARP Research Group

Universidad de Murcia

---

examples/fastLaplace/fastLaplace.cpp Go to the documentation of this file. /* * Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group. * <http://perception.inf.um.es> * University of Murcia, Spain. * * This file is part of the QVision library. * * QVision is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation, version 3 of the License. * * QVision is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with QVision. If not, see <http://www.gnu.org/licenses/>. */ #include <stdio.h> #include <stdlib.h> #include <iostream> #include <QDebug> #include <qvip.h> #include <qvipp.h> #include <QVApplication> #include <QVVideoReaderBlock> #include <QVDefaultGUI> #include <QVImageCanvas> #ifndef DOXYGEN_IGNORE_THIS class MyBlock: public QVProcessingBlock { public: MyBlock(QString name): QVProcessingBlock(name) { addProperty< QVImage<uChar,1> >("Input image", inputFlag|outputFlag); addProperty< QVImage<uChar,1> >("Laplace image", outputFlag); addProperty< QList<QPointF> >("Laplace features", outputFlag); addProperty< bool >("Show Laplace features", inputFlag, true); addProperty< int >("Threshold", inputFlag, 32, "Maximal detection threshold", 0, 64); } void iterate() { const QVImage<uChar,1> image = getPropertyValue< QVImage<uChar,1> >("Input image"); const bool showLaplaceFeatures = getPropertyValue< bool >("Show Laplace features"); const int threshold = getPropertyValue< int >("Threshold"); timeFlag("init"); const QVImage<uChar, 1> laplaceImage = FastLaplaceFilter(image); timeFlag("Laplace filter"); const QList<QPointF> points = FastLaplacePoints(image, threshold); timeFlag("Laplace points"); setPropertyValue< QVImage<uChar,1> >("Laplace image", laplaceImage); if (showLaplaceFeatures) setPropertyValue< QList<QPointF> >("Laplace features", points); else setPropertyValue< QList<QPointF> >("Laplace features", QList<QPointF>()); } }; int main(int argc, char *argv[]) { QVApplication app(argc, argv, "Example program for QVision library. Shows Laplace response image and features."); QVVideoReaderBlock camera("Video"); MyBlock block("Laplace block"); camera.linkProperty(&block,"Input image"); QVDefaultGUI interface; QVImageCanvas inputImage("Input image"); block.linkProperty("Input image", inputImage); QVImageCanvas laplaceImage("Laplace image"); block.linkProperty("Laplace image", laplaceImage); block.linkProperty("Laplace features", laplaceImage); laplaceImage.setRadius("Laplace features", 2); return app.exec(); } #endif

---

QVision framework. PARP research group. Copyright © 2007, 2008, 2009, 2010, 2011.