Es++ Sample: ColoredImageDenoising


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 *  ColoredImageDenoising.cpp
 *
 *****************************************************************************/

//
#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 DenoisedImageView :public Es::OpenCVScrolledImageView {
  private:
    cv::Mat denoised_image;

  public:
    DenoisedImageView()
    {
    }

    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();
      denoised_image  = original_image.clone();
      scaleImage(denoised_image, scaling_ratio);
    }    

    void denoise(int h, int hColor, int templateWindowSize, 
            int searchWindowSize, int scalingRatio)
    {
      cv::Mat& original_image = getOriginalImage();
      try {
        cv::fastNlMeansDenoisingColored(original_image, denoised_image, 
          (float)h, 
          (float)hColor,
          templateWindowSize, searchWindowSize);

        scaleImage(denoised_image, scalingRatio);
      } catch (cv::Exception& ex) {
      }
    }

    void rescale(int scaling_ratio)
    {
      OpenCVScrolledImageView::scaleImage(denoised_image, scaling_ratio);
    }
  };
  // Inner classes end.
  /////////////////////////////////////////////////////// 

  Es::Label              filepath;

  Es::HorizontalLayout   horiz_layout;

  Es::VerticalLayout     control_pane;

  OriginalImageView      original_image;

  DenoisedImageView       denoised_image;

  int                    loading_flag;

  Es::OpenCVScaleComboBox scale_combobox;

  static const int        H_PARAMETER_MAX = 31;
  int                     hParameter;  
  Es::LabeledTrackBar     hParameter_trackbar;

  static const int        HCOLOR_PARAMETER_MAX = 31;
  int                     hColorParameter; 
  Es::LabeledTrackBar     hColorParameter_trackbar;

  static const int        TEMPLATE_WINDOW_SIZE_MAX = 31;
  int                     templateWindowSize; 
  Es::LabeledTrackBar     templateWindowSize_trackbar;
 
  static const int        SEARCH_WINDOW_SIZE_MAX = 31;
  int                     searchWindowSize;  
  Es::LabeledTrackBar     searchWindowSize_trackbar;
 
  int                     scaling_ratio;  //Percentage.
  static const int        CONTROLPANE_WIDTH = 200;

  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/MeshedNioh.png";

    filepath.set_label(filename);
    int ww = (w - CONTROLPANE_WIDTH)/2;

    filepath.set_size_request(w, 30);
    original_image.set_size_request(ww, h);
    denoised_image.set_size_request(ww, h);
    control_pane.set_size_request( CONTROLPANE_WIDTH, h);

    horiz_layout.pack_start(original_image);
    horiz_layout.pack_start(denoised_image);

    horiz_layout.pack_start(control_pane, FALSE, FALSE, 0);

    scale_combobox.set_selection(scaling_ratio);
    scale_combobox.set_changed_callback(
             sigc::mem_fun(*this, &MainView::scale_changed) );

    hParameter_trackbar.set_label("HParameter:[1,31]");
    hParameter    = 27;
    hParameter_trackbar.configure_adjuster(
           (double)hParameter, 1.0f, (double)H_PARAMETER_MAX);

    hParameter_trackbar.set_value_changed_callback(
            sigc::mem_fun(*this, &MainView::hParameter_changed) );

    hColorParameter_trackbar.set_label("HColorarameter:[1,31]");
    hColorParameter    = 27;
    hColorParameter_trackbar.configure_adjuster(
              (double)hColorParameter, 1.0f, 
              (double)HCOLOR_PARAMETER_MAX); 
                
    hColorParameter_trackbar.set_value_changed_callback(
        sigc::mem_fun(*this, &MainView::hColorParameter_changed) );

    templateWindowSize_trackbar.set_label("TemplateWindowSize:[1,31]");
    templateWindowSize    = 15;
    templateWindowSize_trackbar.configure_adjuster(
                (double)templateWindowSize, 1.0f,
                (double)TEMPLATE_WINDOW_SIZE_MAX);

    templateWindowSize_trackbar.set_value_changed_callback(
        sigc::mem_fun(*this, &MainView::templateWindowSize_changed) );
            
    searchWindowSize_trackbar.set_label("SearchWindowSize:[1,31]");
    searchWindowSize    = 13;
    searchWindowSize_trackbar.configure_adjuster(
                 (double)searchWindowSize, 1.0f,
                 (double)SEARCH_WINDOW_SIZE_MAX);

    searchWindowSize_trackbar.set_value_changed_callback(
       sigc::mem_fun(*this, &MainView::searchWindowSize_changed) );

    control_pane.set_spacing(20);
    control_pane.pack_start(scale_combobox, Gtk::PACK_SHRINK);
    control_pane.pack_start(hParameter_trackbar, Gtk::PACK_SHRINK);
    control_pane.pack_start(hColorParameter_trackbar, Gtk::PACK_SHRINK);

    control_pane.pack_start(templateWindowSize_trackbar, Gtk::PACK_SHRINK);
    control_pane.pack_start(searchWindowSize_trackbar, Gtk::PACK_SHRINK);

    loading_flag = IMREAD_COLOR;
    original_image.loadImage(filename, loading_flag, scaling_ratio);
    denoised_image.loadImage(filename, loading_flag, scaling_ratio);

    denoised_image.denoise(hParameter, hColorParameter, templateWindowSize, 
        searchWindowSize, 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);
    denoised_image.rescale(scaling_ratio);
  }

  void hParameter_changed()
  {
    hParameter = hParameter_trackbar.get_value();
    denoised_image.denoise(hParameter, hColorParameter, templateWindowSize, 
    searchWindowSize, scaling_ratio);
  }

  void hColorParameter_changed()
  {
    hColorParameter = hColorParameter_trackbar.get_value();
    denoised_image.denoise(hParameter, hColorParameter, templateWindowSize, 
    searchWindowSize, scaling_ratio);
  }

  void templateWindowSize_changed()
  {
    templateWindowSize = templateWindowSize_trackbar.get_value();
    denoised_image.denoise(hParameter, hColorParameter, templateWindowSize, 
    searchWindowSize, scaling_ratio);
  }
  
  void searchWindowSize_changed()
  {
    searchWindowSize = searchWindowSize_trackbar.get_value();
    denoised_image.denoise(hParameter, hColorParameter, templateWindowSize, 
    searchWindowSize, 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);
      denoised_image.loadImage(filename, loading_flag, scaling_ratio);

      denoised_image.denoise(hParameter, hColorParameter, templateWindowSize, 
    searchWindowSize, 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;
}