| OZ++ Sample: HarrisCornerDetector |
/****************************************************************************** * * Copyright (c) 2019 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer. * * 2. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * HarrisCornerDetector.cpp * *****************************************************************************/ //2017/06/10 // See: http://docs.opencv.org/2.4/modules/imgproc/doc/ // feature_detection.html?highlight=cornerharris#cornerharris // // http://www.swarthmore.edu/NatSci/mzucker1/opencv-2.4.10-docs/ // doc/tutorials/features2d/trackingmotion/harris_detector/harris_detector.html //2019/01/03 #include <opencv2/stitching.hpp> #include <oz++/motif/Label.h> #include <oz++/motif/RowColumn.h> #include <oz++/motif/LabeledTrackBar.h> #include <oz++/opencv/OpenCVScaleComboBox.h> #include <oz++/opencv/OpenCVMainView.h> #include <oz++/opencv/OpenCVImageView.h> #include <oz++/motif/FileOpenDialog.h> namespace OZ { class MainView :public OpenCVMainView { private: /////////////////////////////////////////////// //Inner classes start. class OriginalImageView: public OpenCVImageView { private: cv::Mat originalImage; cv::Mat scaledImage; virtual void display() { show(scaledImage); } public: OriginalImageView(View* parent, const char* name, Args& args) :OpenCVImageView(parent, name, args) { try { const char* filename = (const char*)args.get(XmNimageFileName); int imageLoadingFlag = args.get(XmNimageLoadingFlag); int scalingRatio = (int)args.get(XmNimageScalingRatio); loadImage(filename, imageLoadingFlag, scalingRatio); } catch (OZ::Exception ex) { caught(ex); } } ~OriginalImageView() { } void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR, int scalingRatio=100) { originalImage = readImage(filename, imageLoadingFlag); scaleImage(originalImage, scaledImage, scalingRatio); } void rescale(int scalingRatio) { scaledImage.release(); scaleImage(originalImage, scaledImage, scalingRatio); } }; class DetectedImageView: public OpenCVImageView { private: cv::Mat originalImage; cv::Mat grayImage; cv::Mat detectedImage; cv::Mat scaledImage; //The scale image is displayed on this image view. virtual void display() { show(scaledImage); } public: DetectedImageView(View* parent, const char* name, Args& args) :OpenCVImageView(parent, name, args) { try { const char* filename = (const char*)args.get(XmNimageFileName); int imageLoadingFlag = args.get(XmNimageLoadingFlag); int scalingRatio = (int)args.get(XmNimageScalingRatio); loadImage(filename, imageLoadingFlag, scalingRatio); } catch (OZ::Exception ex) { caught(ex); } } ~DetectedImageView() { } void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR, int scalingRatio=100) { originalImage = readImage(filename, imageLoadingFlag); cv::cvtColor( originalImage, grayImage, COLOR_BGR2GRAY ); detectedImage = grayImage.clone(); //cv::Mat::zeros(originalImage.size(), CV_32FC1 ); scaleImage(grayImage, scaledImage, scalingRatio); } void rescale(int scalingRatio) { scaledImage.release(); scaleImage(detectedImage, scaledImage, scalingRatio); } //The following detectCornert method is based on the code: //http://www.swarthmore.edu/NatSci/mzucker1/opencv-2.4.10-docs/ // doc/tutorials/features2d/trackingmotion/harris_detector/harris_detector.html int detectCorner(int blockSize, int ksize, int threshold, int scalingRatio) { //blockSize: Neighborhood size. //ksize : Aperture parameter for the Sobel operator, // which should be odd. ksize = (ksize/2)*2 + 1; //k: Harris detector free parameter. double k = 0.04; detectedImage.release(); cv::Mat destImage = cv::Mat::zeros(originalImage.size(), CV_32FC1 ); cv::cornerHarris(grayImage, destImage, blockSize, ksize, k, BORDER_DEFAULT ); cv::Mat destNormalized; cv::normalize(destImage, destNormalized, 0, 255, NORM_MINMAX, CV_32FC1, Mat() ); //We draw circles at the corners detected by cornerHarris on the originalImage // by using the destNormalized image data and the threshold parameter // which is used to draw the circles.. detectedImage = originalImage.clone(); int detectedNumber = 0; for( int j = 0; j < destNormalized.rows ; j++ ) { for( int i = 0; i < destNormalized.cols; i++ ) { if( (int) destNormalized.at<float>(j,i) > threshold ) { cv::circle(detectedImage, cv::Point( i, j ), 5, cv::Scalar(0, 0, 255), //red 1, 8, 0); detectedNumber++; } } } scaleImage(detectedImage, scaledImage, scalingRatio); return detectedNumber; } }; //Inner classes end. private: StringT<char> imageFile; int imageLoadingFlag; int imageScalingRatio; //percentage SmartPtr<Label> label; SmartPtr<OriginalImageView> originalImage; SmartPtr<DetectedImageView> detectedImage; SmartPtr<RowColumn> controlPane; SmartPtr<OpenCVScaleComboBox> scaleComboBox; int blockSizeMax; int blockSize; SmartPtr<LabeledTrackBar> blockSizeTrackBar; int ksizeMax; int ksize; SmartPtr<LabeledTrackBar> ksizeTrackBar; int detectorThreshold; SmartPtr<LabeledTrackBar> detectorThresholdTrackBar; SmartPtr<Label> detectedNumber; SmartPtr<FileOpenDialog> fileDialog; public: void scaleChanged(Action& action) { int val = scaleComboBox->getScale(); if (val > 0 && imageScalingRatio != val) { imageScalingRatio = val; originalImage -> rescale(imageScalingRatio); detectedImage -> rescale(imageScalingRatio); } } void trackBarScrolled1(Action& action) { blockSize = blockSizeTrackBar->getPosition(); ksize = ksizeTrackBar->getPosition(); detectorThreshold = detectorThresholdTrackBar->getPosition(); int number = detectedImage->detectCorner(blockSize, ksize, detectorThreshold, imageScalingRatio); setDetectedNumber(number); } void trackBarScrolled2(Action& action) { blockSize = blockSizeTrackBar->getPosition(); ksize = ksizeTrackBar->getPosition(); detectorThreshold = detectorThresholdTrackBar->getPosition(); int number = detectedImage->detectCorner(blockSize, ksize, detectorThreshold, imageScalingRatio); setDetectedNumber(number); } void trackBarScrolled3(Action& action) { blockSize = blockSizeTrackBar->getPosition(); ksize = ksizeTrackBar->getPosition(); detectorThreshold = detectorThresholdTrackBar->getPosition(); int number = detectedImage->detectCorner(blockSize, ksize, detectorThreshold, imageScalingRatio); setDetectedNumber(number); } void cancel(Action& action) { fileDialog->popdown(); } void fileOpen(Action& action) { fileDialog->popup(); } void updateLabel(const char* filename) { CompoundString cs(filename); label->set(XmNlabelString, cs); } void setDetectedNumber(int number) { char string[128]; sprintf(string, "DetectedNumber:%d", number); CompoundString cs(string); detectedNumber->set(XmNlabelString, cs); } void ok(Action& action) { try { imageFile = fileDialog->getFileName(); const char* filename = (const char*)imageFile; printf("filename: %s\n", filename); fileDialog->popdown(); originalImage->invalidate(); originalImage->loadImage(filename, imageLoadingFlag, imageScalingRatio); originalImage->invalidate(); detectedImage ->loadImage(filename, imageLoadingFlag, imageScalingRatio); blockSize = blockSizeTrackBar->getPosition(); ksize = ksizeTrackBar->getPosition(); detectorThreshold = detectorThresholdTrackBar->getPosition(); int number = detectedImage->detectCorner(blockSize, ksize, detectorThreshold, imageScalingRatio); setDetectedNumber(number); updateLabel(filename); resize(width(), height()); flush(); } catch (OZ::Exception& ex) { caught(ex); } } void resize(Dimension w, Dimension h) { int CP_WIDTH = 200; int LB_HEIGHT = 30; int ww = w-CP_WIDTH; int hh = h - LB_HEIGHT; if (label && originalImage && detectedImage && controlPane ) { label -> reshape(0, 0, w, LB_HEIGHT); originalImage-> reshape(0, LB_HEIGHT, ww/2, hh); detectedImage -> reshape(ww/2, LB_HEIGHT, ww/2-1, hh); controlPane -> reshape(ww-1, LB_HEIGHT, CP_WIDTH+1, hh); //The following two lines are a workaround to erase garbage. controlPane -> unmap(); controlPane -> map(); } flush(); } public: MainView(OpenCVApplication& applet, const char* name, Args& args) :OpenCVMainView(applet, name, args) { BulletinBoard* bboard = getBulletinBoard(); imageFile = "../images/Geometry.png"; imageLoadingFlag = CV_LOAD_IMAGE_COLOR; imageScalingRatio = 60; //% try { Args ar; CompoundString fileNamecs(imageFile); ar.set(XmNlabelString, fileNamecs); ar.set(XmNalignment, XmALIGNMENT_BEGINNING); label = new Label(bboard, "", ar); ar.reset(); ar.set(XmNimageFileName, imageFile); ar.set(XmNimageLoadingFlag, imageLoadingFlag); ar.set(XmNimageScalingRatio, imageScalingRatio); originalImage = new OriginalImageView(bboard, "", ar); ar.reset(); ar.set(XmNimageFileName, imageFile); ar.set(XmNimageLoadingFlag, imageLoadingFlag); ar.set(XmNimageScalingRatio, imageScalingRatio); detectedImage = new DetectedImageView(bboard, "", ar); ar.reset(); controlPane = new RowColumn(bboard, "", ar); const char* defaultScale = "60%"; ar.reset(); CompoundString scaler("Scale"); ar.set(XmNlabelString, scaler); ar.set(XmNdefaultScale, defaultScale); scaleComboBox = new OpenCVScaleComboBox(controlPane, "", ar); scaleComboBox->addCallback(XmNselectionCallback, this, (Callback)&MainView::scaleChanged, NULL); blockSizeMax = 100; ksizeMax = 31; blockSize = 7; ksize = 5; ar.reset(); CompoundString th1Title("BlockSize:[2,100]"); ar.set(XmNminimum, 2); ar.set(XmNmaximum, blockSizeMax); ar.set(XmNvalue, blockSize); ar.set(XmNtitleString, th1Title); blockSizeTrackBar = new LabeledTrackBar(controlPane, "", ar); blockSizeTrackBar->addCallback(XmNvalueChangedCallback, this, (Callback)&MainView::trackBarScrolled1, NULL); ar.reset(); CompoundString th2Title("ApertureSize:[0,31]"); ar.set(XmNminimum, 0); ar.set(XmNmaximum, ksizeMax); ar.set(XmNvalue, ksize); ar.set(XmNtitleString, th2Title); ksizeTrackBar = new LabeledTrackBar(controlPane, "", ar); ksizeTrackBar->addCallback(XmNvalueChangedCallback, this, (Callback)&MainView::trackBarScrolled2, NULL); detectorThreshold = 120; ar.reset(); CompoundString th3Title("DetectThreshold:[100,240]"); ar.set(XmNminimum, 100); ar.set(XmNmaximum, 240); ar.set(XmNvalue, detectorThreshold); ar.set(XmNtitleString, th3Title); detectorThresholdTrackBar = new LabeledTrackBar(controlPane, "", ar); detectorThresholdTrackBar->addCallback(XmNvalueChangedCallback, this, (Callback)&MainView::trackBarScrolled3, NULL); ar.reset(); detectedNumber = new Label(controlPane, "", ar); int number = detectedImage->detectCorner(blockSize, ksize, detectorThreshold, imageScalingRatio); setDetectedNumber(number); ar.reset(); fileDialog = new FileOpenDialog(this, "FileOpenDialog", ar); fileDialog -> getOkButton() -> addCallback(XmNactivateCallback, this, (Callback)&MainView::ok, NULL); sendConfigureEvent(); } catch(OZ::Exception& ex) { caught(ex); } } ~MainView() { } }; } // int main(int argc, char** argv) { try { const char* appclass = argv[0]; OpenCVApplication applet(appclass, argc, argv); Args args; args.set(XmNwidth, 1000); args.set(XmNheight, 380); MainView view(applet, argv[0], args); view.realize(); applet.run(); } catch (OZ::Exception& ex) { caught(ex); } return 0; }