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SOL9 Sample: HistgramEqualizedImage
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1 Screenshot
2 Source code
/*
* HistgramEqualizedImage.cpp
* Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*/
//2017/03/30
//See http://docs.opencv.org/2.4/doc/tutorials/imgproc/histograms/histogram_equalization/histogram_equalization.html
//2017/12/01 Added save, saveAs methods to MainView.
#define _CONSOLE_
#include <sol/ModuleFileName.h>
#include <sol/LabeledComboBox.h>
#include <sol/FileDialog.h>
#include <sol/DropFiles.h>
#include <sol/opencv/OpenCVApplicationView.h>
#include <sol/opencv/OpenCVImageView.h>
namespace SOL {
class MainView :public OpenCVApplicationView {
private:
typedef enum {
COLOR_MODEL_HSV,
COLOR_MODEL_YCRCB
} COLOR_MODEL;
private:
////////////////////////////////////////////////////////////////////////////////////////
//Inner classes start.
class OriginalImageView :public OpenCVImageView {
private:
cv::Mat originalImage;
cv::Mat& getMat()
{
return originalImage;
}
void display()
{
show(originalImage);
}
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);
loadImage(filename, imageLoadingFlag);
} catch (SOL::Exception ex) {
caught(ex);
}
}
~OriginalImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
refresh();
} catch (Exception& ex) {
caught(ex);
}
}
};
class HistramImageView :public OpenCVImageView {
private:
cv::Mat originalImage;
// cv::Mat colorModeledImage;
cv::Mat destImage;
cv::Mat& getMat()
{
return destImage;
}
void display()
{
show(destImage);
}
public:
HistramImageView(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);
loadImage(filename, imageLoadingFlag);
} catch (SOL::Exception ex) {
caught(ex);
}
}
~HistramImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
destImage = originalImage.clone();
refresh();
} catch (Exception& ex) {
caught(ex);
}
}
void equalizeHistgram(COLOR_MODEL colorModel)
{
try {
int equalizeChannel = 0;
int toNewColorFormat = COLOR_BGR2HSV;
int toOldColorFormat = COLOR_HSV2BGR;
switch (colorModel) {
case COLOR_MODEL_HSV:
equalizeChannel = 2;
toNewColorFormat = COLOR_BGR2HSV;
toOldColorFormat = COLOR_HSV2BGR;
break;
case COLOR_MODEL_YCRCB:
equalizeChannel = 0;
toNewColorFormat = COLOR_BGR2YCrCb;
toOldColorFormat = COLOR_YCrCb2BGR;
break;
default:
break;
}
cv::Mat colorModeledImage;
//Convert color-format from BGR to HSV or YCrCB
cvtColor(originalImage, 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, destImage, toOldColorFormat);
} catch (cv::Exception& ex) {
; //
}
refresh();
}
};
//Inner classes end.
////////////////////////////////////////////////////////////////////////////////////////
StringT<char> imageFile;
StringT<char> savedImageFile;
SmartPtr<OriginalImageView> originalImage;
SmartPtr<HistramImageView> histgramImage;
COLOR_MODEL colorModel;
SmartPtr<LabeledComboBox> colorModelComboBox;
FileDialog filedlg;
void updateCaption()
{
char caption[MAX_PATH];
sprintf_s(caption, CountOf(caption), "%s - %s",
(const char*)imageFile,
getAppName());
setText(caption);
}
//Horizontal Scroll event by TrackBars
void colorModelChanged(Action& action)
{
colorModel = (COLOR_MODEL)colorModelComboBox->getCurSel();
histgramImage -> equalizeHistgram(colorModel);
}
void resize(int w, int h)
{
if (originalImage && histgramImage && colorModelComboBox) {
originalImage -> reshape(2, 2, (w-160)/2-1, h-4);
histgramImage -> reshape((w-160)/2+1, 2, (w-160)/2-1, h-4);
colorModelComboBox -> reshape(w-155 + 10, 10, 140, 60);
}
}
void openFile(const char* filename)
{
try {
originalImage -> loadImage(filename);
histgramImage -> loadImage(filename);
const char* fname = strrchr(filename, '\\');
if (fname) {
fname++;
}
imageFile = fname;
updateCaption();
histgramImage -> equalizeHistgram(colorModel);
} catch (Exception& ex) {
caught(ex);
}
}
void dropFiles(Action& action)
{
char fileName[MAX_PATH] = { 0 };
DropFiles drop((HDROP)action.getWParam());
int num = drop.queryFile(0, fileName, CountOf(fileName));
if(num > 0) {
if (filedlg.isImageFileName(fileName)) {
openFile(fileName);
bringUp();
} else {
bringUp(); //Activate and raise this view
showErrorDialog("Invalid image filename", fileName, MB_OK);
}
}
}
void confirm(Action& action)
{
int rc = MessageBox(NULL, "Are you sure to close this window?", "Confirmation",
MB_OKCANCEL|MB_ICONEXCLAMATION);
if (rc == IDOK) {
exit(action);
}
}
public:
MainView(OpenCVApplication& applet, const char* name, Args& args)
:OpenCVApplicationView(applet, name, args)
{
try {
imageFile = "..\\images\\MaterializedSpheres.png";
int imageLoadingFlag = CV_LOAD_IMAGE_COLOR;
Args ar;
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
originalImage = new OriginalImageView(this, "cvwindow1", ar);
originalImage -> addCallback(XmNdropCallback, this,
(Callback)&MainView::dropFiles, NULL);
ar.reset();
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
histgramImage = new HistramImageView(this, "cvwindow2", ar);
//Create a thresholdTypeComboBx
ar.reset();
colorModelComboBox = new LabeledComboBox(this, "ColorModel", ar);
const char* models[] = {
"HSV",
"YCrCb",
};
for (int i = 0; i<CountOf(models); i++) {
colorModelComboBox -> addString(models[i]);
}
colorModel = COLOR_MODEL_HSV;
colorModelComboBox -> setCurSel((int)colorModel);
//Add a colorModelChanged callback to the colorModelComboBox.
colorModelComboBox -> addCallback(XmNselChangeCallback, this,
(Callback)&MainView::colorModelChanged, NULL);
addCallback(XmNmenuCallback, IDM_EXIT, this,
(Callback)&MainView::confirm, NULL);
histgramImage -> equalizeHistgram(colorModel);
updateCaption();
ar.reset();
ar.set(XmNfilter, FileDialog::getImageFilesFilter());
filedlg.create(this, "OpenFile", ar);
} catch (Exception& ex) {
caught(ex);
}
}
~MainView()
{
}
void open(Action& action)
{
Args ar;
char dir[MAX_PATH] = { 0 };
if (restoreFileFolder(dir, CountOf(dir))) {
ar.set(XmNdirectory, dir);
filedlg.setValues(ar);
}
try {
if(filedlg.open()) {
const char* filename = filedlg.getFileName();
saveFileFolder(filename);
openFile(filename);
}
} catch (Exception& ex) {
caught(ex);
}
}
//2017/12/01
void save(Action& action)
{
try {
if (!savedImageFile.isEmpty()) {
//Write detected image into the filename.
histgramImage->writeImage(savedImageFile);
} else {
saveAs(action);
}
} catch (Exception& ex) {
caught(ex);
}
}
//2017/12/01
void saveAs(Action& action)
{
Args ar;
char dir[MAX_PATH] = { 0 };
if (restoreFileFolder(dir, CountOf(dir))) {
ar.set(XmNdirectory, dir);
filedlg.setValues(ar);
}
try {
if(filedlg.save()) {
const char* filename = filedlg.getFileName();
saveFileFolder(filename);
//Write histgram image into the filename.
histgramImage->writeImage(filename);
savedImageFile = filename;
}
} catch (Exception& ex) {
caught(ex);
}
}
};
}
//
void main(int argc, char** argv)
{
try {
ModuleFileName module(argv[0]);
const char* name = module.getAppName();
OpenCVApplication applet(name, argc, argv);
Args args;
args.set(XmNwidth, 900);
args.set(XmNheight, 380);
MainView view(applet, name, args);
view.realize();
applet.run();
} catch (SOL::Exception& ex) {
caught(ex);
}
}
Last modified: 2 Dec. 2017
Copyright (c) 2017 Antillia.com ALL RIGHTS RESERVED.