Es++ Sample: ContourFinder |
/****************************************************************************** * * Copyright (c) 2017 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. * * * ContourFinder.cpp * *****************************************************************************/ //2017/10/18 //See: http://docs.opencv.org/3.2.0/df/d0d/tutorial_find_contours.html // #include <es++/gtkmm-3.0/Application.h> #include <es++/gtkmm-3.0/Label.h> #include <es++/gtkmm-3.0/LabeledTrackBar.h> #include <es++/gtkmm-3.0/FileOpenDialog.h> #include <es++/opencv-4.0/OpenCVMainView.h> #include <es++/opencv-4.0/OpenCVScrolledImageView.h> #include <es++/opencv-4.0/OpenCVScaleComboBox.h> using namespace Gtk; namespace Es { class MainView :public Es::OpenCVMainView { private: /////////////////////////////////////////////////////// //Inner classes start. class OriginalImageView :public Es::OpenCVScrolledImageView { public: OriginalImageView() { } void rescale(int scaling_ratio) { OpenCVScrolledImageView::scaleImage(scaling_ratio); } }; class DetectedImageView :public Es::OpenCVScrolledImageView { private: cv::Mat gray_image; cv::Mat detected_image; cv::Mat contour_image; public: DetectedImageView() { } void loadImage(const std::string& filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR, int scaling_ratio=100) { OpenCVScrolledImageView::loadImage(filename, imageLoadingFlag, scaling_ratio); cv::Mat& original_image = getOriginalImage(); detected_image = original_image.clone(); cv::cvtColor(original_image, gray_image, COLOR_BGR2GRAY ); contour_image = gray_image.clone(); scaleImage(contour_image, scaling_ratio); } //The following method is based on the sample code // on http://docs.opencv.org/3.2.0/df/d0d/tutorial_find_contours.html void detect(int threshold1, int threshold2, int scaling_ratio) { cv::RNG rng; cv::Mat& original_image = getOriginalImage(); threshold1 = (threshold1/2)*2 + 1; threshold2 = (threshold2/2)*2 + 1; cv::Canny(gray_image, detected_image, (double)threshold1, (double)threshold2); std::vector<std::vector<cv::Point> > contours; std::vector<cv::Vec4i> hierarchy; //2 find contours on the canny edge-detected image cv::findContours(detected_image, contours, hierarchy, RETR_TREE, CHAIN_APPROX_SIMPLE, Point(0, 0) ); contour_image = Mat::zeros(detected_image.size(), CV_8UC3 ); for( size_t i = 0; i< contours.size(); i++ ) { cv::Scalar color = cv::Scalar( rng.uniform(0, 255), rng.uniform(0,255), rng.uniform(0,255) ); cv::drawContours(contour_image, contours, (int)i, color, 2, 8, hierarchy, 0, Point() ); } scaleImage(contour_image, scaling_ratio); } void rescale(int scaling_ratio) { OpenCVScrolledImageView::scaleImage(contour_image, scaling_ratio); } }; // Inner classes end. /////////////////////////////////////////////////////// Es::Label filepath; Es::HorizontalLayout horiz_layout; Es::VerticalLayout control_pane; OriginalImageView original_image; DetectedImageView detected_image; int loading_flag; Es::OpenCVScaleComboBox scale_combobox; Es::LabeledTrackBar threshold1_trackbar; int threshold1; Es::LabeledTrackBar threshold2_trackbar; int threshold2; int scaling_ratio; //Percentage. static const int CONTROLPANE_WIDTH = 180; std::string filename; Es::FileOpenDialog file_dialog; public: ////////////////////////////////////////////// //Constructor // MainView(Es::Application& applet, std::string& name, Es::Args& args) :OpenCVMainView(applet, name, args) ,scaling_ratio(100) //100% ,file_dialog(*this, Es::FileOpenDialog::IMAGE_FILES) { int w = (int)args.get(XmNwidth); int h = (int)args.get(XmNheight); int ratio = (int)args.get(XmNscalingRatio); scaling_ratio = OpenCVImageView::validateScale(ratio); Es::MainLayout& main_layout = get_main_layout(); main_layout.pack_start(filepath, FALSE, FALSE, 0); main_layout.pack_start(horiz_layout); filename = "../../images/Geometry.png"; filepath.set_label(filename); int ww = (w - CONTROLPANE_WIDTH)/2; filepath.set_size_request(w, 30); original_image.set_size_request(ww, h); detected_image.set_size_request(ww, h); control_pane.set_size_request( CONTROLPANE_WIDTH, h); horiz_layout.pack_start(original_image); horiz_layout.pack_start(detected_image); horiz_layout.pack_start(control_pane, FALSE, FALSE, 0); scale_combobox.set_selection(scaling_ratio); threshold1 = 50; threshold1_trackbar.set_label("CannyThreshold1: [0, 300]"); threshold1_trackbar.configure_adjuster((double)threshold1, 0.0f, 300.0f); threshold1_trackbar.set_value_changed_callback( sigc::mem_fun(*this, &MainView::threshold1_value_changed) ); threshold2 = 100; threshold2_trackbar.set_label("CannyThreshold2: [0, 300]"); threshold2_trackbar.configure_adjuster((double)threshold2, 0.0f, 300.0f); threshold2_trackbar.set_value_changed_callback( sigc::mem_fun(*this, &MainView::threshold2_value_changed) ); control_pane.set_spacing(20); control_pane.pack_start(scale_combobox, Gtk::PACK_SHRINK); control_pane.pack_start(threshold1_trackbar, Gtk::PACK_SHRINK); control_pane.pack_start(threshold2_trackbar, Gtk::PACK_SHRINK); scale_combobox.set_changed_callback( sigc::mem_fun(*this, &MainView::scale_changed) ); loading_flag = IMREAD_COLOR; original_image.loadImage(filename, loading_flag, scaling_ratio); detected_image.loadImage(filename, loading_flag, scaling_ratio); detected_image.detect(threshold1, threshold2, scaling_ratio); show_all(); } void scale_changed() { std::string scale = scale_combobox.get_active_text(); printf("scale_changed %s\n", scale.c_str()); scaling_ratio = scale_combobox.get_selection(); original_image.rescale(scaling_ratio); detected_image.rescale(scaling_ratio); } void threshold1_value_changed() { threshold1 = (int)threshold1_trackbar.get_value(); detected_image.detect(threshold1, threshold2, scaling_ratio); } void threshold2_value_changed() { threshold2 = (int)threshold2_trackbar.get_value(); detected_image.detect(threshold1, threshold2, scaling_ratio); } void file_open() { int rc = file_dialog.popup(); if (rc == Gtk::RESPONSE_OK) { const std::string filename = file_dialog.get_filename(); filepath.set_label(filename); original_image.loadImage(filename, loading_flag, scaling_ratio); detected_image.loadImage(filename, loading_flag, scaling_ratio); detected_image.detect(threshold1, threshold2, scaling_ratio); } } }; } int main(int argc, char** argv) { Es::Environment env; try { std::string name = argv[0]; Es::Application applet(argc, argv); Es::Args args; args.set(XmNx, 20); args.set(XmNy, 40); args.set(XmNwidth, 900); args.set(XmNheight, 400); args.set(XmNscalingRatio, 60); //60% Es::MainView mainv(applet, name, args); mainv.show(); applet.run(mainv); } catch (Es::Exception& ex) { caught(ex); } catch (...) { printf("Get exception \n"); } return 0; }