| Es++ Sample: HistgramEqualizedImage |
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*
* Copyright (c) 2017 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
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*
* HistgramEqualizedImage.cpp
*
*****************************************************************************/
//
#include <es++/Pair.h>
#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:
typedef enum {
COLOR_MODEL_HSV = 0,
COLOR_MODEL_YCRCB
} COLOR_MODEL;
private:
///////////////////////////////////////////////////////
//Inner classes start.
class OriginalImageView :public Es::OpenCVScrolledImageView {
public:
OriginalImageView()
{
}
void rescale(int scaling_ratio)
{
OpenCVScrolledImageView::scaleImage(scaling_ratio);
}
};
class HistgrammedImageView :public Es::OpenCVScrolledImageView {
private:
cv::Mat dest_image;
public:
HistgrammedImageView()
{
}
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();
dest_image = original_image.clone();
scaleImage(dest_image, scaling_ratio);
}
void equalize_histgram(int colorModel, int scaling_ratio)
{
try {
cv::Mat& original_image = getOriginalImage();
int equalizeChannel = 0;
int toNewColorFormat = cv::COLOR_BGR2HSV;
int toOldColorFormat = cv::COLOR_HSV2BGR;
switch (colorModel) {
case COLOR_MODEL_HSV:
equalizeChannel = 2;
toNewColorFormat = cv::COLOR_BGR2HSV;
toOldColorFormat = cv::COLOR_HSV2BGR;
break;
case COLOR_MODEL_YCRCB:
equalizeChannel = 0;
toNewColorFormat = cv::COLOR_BGR2YCrCb;
toOldColorFormat = cv::COLOR_YCrCb2BGR;
break;
default:
break;
}
cv::Mat colorModeledImage;
//Convert color-format from BGR to HSV or YCrCB
cvtColor(original_image, colorModeledImage, toNewColorFormat);
//Split ycrcbImage to three channles.
std::vector<Mat> channels(3);
cv::split(colorModeledImage, channels);
//Equalize a channel of channels specified equalizedChannel index.
cv::equalizeHist(channels[equalizeChannel], channels[equalizeChannel]);
//Merge three channels images to ycrcbImage
cv::merge(channels, colorModeledImage);
//Convert color-format HSV orYCrCb to BGR
cv::cvtColor(colorModeledImage, dest_image, toOldColorFormat);
scaleImage(dest_image, scaling_ratio);
} catch (cv::Exception& ex) {
; //
}
}
void rescale(int scaling_ratio)
{
OpenCVScrolledImageView::scaleImage(dest_image, scaling_ratio);
}
};
// Inner classes end.
///////////////////////////////////////////////////////
Es::Label filepath;
Es::HorizontalLayout horiz_layout;
Es::VerticalLayout control_pane;
OriginalImageView original_image;
HistgrammedImageView histgrammed_image;
int loading_flag;
Es::OpenCVScaleComboBox scale_combobox;
int color_model;
Es::LabeledComboBox color_model_combobox;
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/flower.png";
filepath.set_label(filename);
int ww = (w - CONTROLPANE_WIDTH)/2;
filepath.set_size_request(w, 30);
original_image.set_size_request(ww, h);
histgrammed_image.set_size_request(ww, h);
control_pane.set_size_request( CONTROLPANE_WIDTH, h);
horiz_layout.pack_start(original_image);
horiz_layout.pack_start(histgrammed_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) );
const char* models[] = {
"HSV",
"YCrCb",
};
color_model = COLOR_MODEL_HSV;
color_model_combobox.set_label("ColorModel");
color_model_combobox.append_items(models, CountOf(models));
color_model_combobox.set_active_text(models[0]);
color_model_combobox.set_changed_callback(
sigc::mem_fun(*this, &MainView::color_model_changed));
control_pane.set_spacing(20);
control_pane.pack_start(scale_combobox, Gtk::PACK_SHRINK);
control_pane.pack_start(color_model_combobox, Gtk::PACK_SHRINK);
loading_flag = IMREAD_COLOR;
original_image.loadImage(filename, loading_flag, scaling_ratio);
histgrammed_image.loadImage(filename, loading_flag, scaling_ratio);
histgrammed_image.equalize_histgram(color_model,
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);
histgrammed_image.rescale(scaling_ratio);
}
void color_model_changed()
{
Es::Pair<int, const char*> models[] = {
{COLOR_MODEL_HSV, "HSV"},
{COLOR_MODEL_YCRCB, "YCrCb"},
};
std::string text = color_model_combobox.get_active_text();
const char* item = text.c_str();
for (size_t i = 0; i<CountOf(models); i++) {
if (strcmp(models[i].second, item) == 0) {
color_model = models[i].first;
break;
}
}
printf("color_model %s\n", text.c_str());
histgrammed_image.equalize_histgram(color_model,
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);
histgrammed_image.loadImage(filename, loading_flag, scaling_ratio);
histgrammed_image.equalize_histgram(color_model,
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;
}