PARP Research Group

Universidad de Murcia

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examples/canvasInteract/canvasInteract.cpp Go to the documentation of this file. /* * Copyright (C) 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 <QVApplication> #include <QVVideoReaderBlock> #include <QVDefaultGUI> #include <QVImageCanvas> #include <qvipp.h> class MyImageCanvas : public QVImageCanvas { public: MyImageCanvas(QString name) : QVImageCanvas(name) {} ; void custom_viewer(){ QVPolyline poly = getPropertyValue<QVPolyline>("poly select"); getQVPainter()->setPen(Qt::yellow); getQVPainter()->setBrush(QBrush(Qt::magenta, Qt::DiagCrossPattern)); for(int i=0; i<poly.size(); i++) { getQVPainter()->drawEllipse(poly[i].x()-10, poly[i].y()-10, 20, 20); getQVPainter()->drawTextUnscaled(poly[i], QString("Point %1").arg(i)); } getQVPainter()->setBrush(QBrush(Qt::magenta, Qt::NoBrush)); } }; class MyWorker: public QVProcessingBlock { public: MyWorker(QString name = QString()): QVProcessingBlock(name) { addProperty< QVImage<uChar,1> >("Input image", inputFlag|outputFlag); addProperty< QVImage<uChar,1> >("Output image", outputFlag); addProperty<QRect>("input rectangle", inputFlag); addProperty<QVPolyline>("input polyline", inputFlag); } void iterate() { QVImage<uChar> image = getPropertyValue< QVImage<uChar,1> >("Input image"); QRect rect = getPropertyValue<QRect>("input rectangle"); QVPolyline poly = getPropertyValue<QVPolyline>("input polyline"); QVImage<uChar> dest = image; // Darken ROI area (by adding 0 to each pixel, but scaling dividing by 2^1: if (rect != QRect()) image.setROI(rect); AddC(image, 0, dest, 1, QPoint(rect.x(), rect.y())); dest.resetROI(); // Undo it arount input polyline's points: // std::cout << poly << std::endl; for (int i = 0; i < poly.size(); i++) for (int x = poly[i].x()-3; x <= poly[i].x()+3; x++) for (int y = poly[i].y()-3; y <= poly[i].y()+3; y++) if ( (x >= 0) && (x < static_cast<int>(image.getCols())) && (y >= 0) && (y < static_cast<int>(image.getRows())) ) dest(x, y) = image(x, y); setPropertyValue< QVImage<uChar,1> >("Output image", dest); }; }; int main(int argc, char *argv[]) { QVApplication app(argc, argv, "Example program for QVision library." ); MyWorker myWorker("worker"); QVVideoReaderBlock camera("Video"); MyImageCanvas imageCanvas("Features"); QVDefaultGUI interface; camera.linkProperty(&myWorker, "Input image"); myWorker.linkProperty("Output image", imageCanvas); imageCanvas.linkSelectedRectangle(myWorker, "input rectangle"); imageCanvas.linkSelectedPolyline(myWorker, "input polyline"); return app.exec(); }

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