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SOL9 Sample: EdgePreservingFilter
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1 Screenshot
2 Source code
/*
* EdgePreservingFilter.cpp
* Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*/
//2017/04/18
//photo.hpp
/** @brief Filtering is the fundamental operation in image and video processing. Edge-preserving smoothing
filters are used in many different applications @cite EM11 .
@param src Input 8-bit 3-channel image.
@param dst Output 8-bit 3-channel image.
@param flags Edge preserving filters:
- **RECURS_FILTER** = 1
- **NORMCONV_FILTER** = 2
@param sigma_s Range between 0 to 200.
@param sigma_r Range between 0 to 1.
CV_EXPORTS_W void edgePreservingFilter(InputArray src, OutputArray dst, int flags = 1,
float sigma_s = 60, float sigma_r = 0.4f);
*/
#define _CONSOLE_
#include <sol/ModuleFileName.h>
#include <sol/LabeledTrackBar.h>
#include <sol/FileDialog.h>
#include <sol/opencv/OpenCVApplicationView.h>
#include <sol/opencv/OpenCVImageView.h>
#include <sol/DropFiles.h>
namespace SOL {
class MainView :public OpenCVApplicationView {
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 FilteredImageView :public OpenCVImageView {
private:
cv::Mat originalImage;
cv::Mat destImage;
cv::Mat& getMat()
{
return destImage;
}
void display()
{
show(destImage);
}
public:
FilteredImageView(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);
}
}
~FilteredImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
destImage = originalImage.clone();
} catch (Exception& ex) {
caught(ex);
}
}
void filter(int ksize, int sigmaColor, int sigmaSpace)
{
try {
int flag = RECURS_FILTER ; //NORMCONV_FILTER is very slow;
cv::edgePreservingFilter(
originalImage,
destImage,
flag,
(double)sigmaSpace,
(double)sigmaColor/100.0f);
} catch (cv::Exception& ex) {
; //Ignore
}
refresh();
}
};
//Inner classes end.
////////////////////////////////////////////////////////////////////////////////////////
StringT<char> imageFile;
StringT<char> savedImageFile;
SmartPtr<OriginalImageView> originalImage;
SmartPtr<FilteredImageView> filteredImage;
static const int KERNEL_SIZE_MAX = 31;
int ksize;
SmartPtr<LabeledTrackBar> kernelSizeTrackBar;
static const int SIGMA_COLOR_MAX =200;
int sigmaColor;
SmartPtr<LabeledTrackBar> sigmaColorTrackBar;
static const int SIGMA_SPACE_MAX=100;
int sigmaSpace;
SmartPtr<LabeledTrackBar> sigmaSpaceTrackBar;
FileDialog filedlg;
void updateCaption()
{
char caption[1024];
sprintf_s(caption, CountOf(caption), "%s - %s", (const char*)imageFile,
getAppName());
setText(caption);
}
//Horizontal Scroll event by TrackBars
void commonTrackBarCallback(Action& action)
{
ksize = kernelSizeTrackBar->getPosition();
sigmaColor = sigmaColorTrackBar->getPosition();
sigmaSpace = sigmaSpaceTrackBar->getPosition();
filteredImage -> filter(ksize, sigmaColor, sigmaSpace);
updateCaption();
}
void resize(int w, int h)
{
if (originalImage && filteredImage && kernelSizeTrackBar &&
sigmaColorTrackBar && sigmaSpaceTrackBar) {
originalImage -> reshape(2, 2, (w-170)/2-1, h-4);
filteredImage -> reshape((w-170)/2+1, 2, (w-170)/2-1, h-4);
kernelSizeTrackBar -> reshape(w-170 + 2, 2, 160, 60);
sigmaColorTrackBar -> reshape(w-170 + 2, 70, 160, 60);
sigmaSpaceTrackBar -> reshape(w-170 + 2, 140, 160, 60);
}
}
void openFile(const char* filename)
{
try {
originalImage -> loadImage(filename);
filteredImage -> loadImage(filename);
const char* fname = strrchr(filename, '\\');
if (fname) {
fname++;
}
imageFile = fname;
filteredImage -> filter(ksize, sigmaColor, sigmaSpace);
updateCaption();
} 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\\YellowFlower.png";
int imageLoadingFlag = CV_LOAD_IMAGE_COLOR;
Args ar;
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
originalImage = new OriginalImageView(this, "", ar);
originalImage -> addCallback(XmNdropCallback, this,
(Callback)&MainView::dropFiles, NULL);
ar.reset();
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
filteredImage = new FilteredImageView(this, "", ar);
ksize = 3;
sigmaColor = 160;
sigmaSpace = 40;
ar.reset();
ar.set(XmNminimum, 0);
ar.set(XmNmaximum, KERNEL_SIZE_MAX);
ar.set(XmNposition, ksize);
ar.set(XmNdisplayOddValue, false);
ar.set(XmNdisplayFloatValue, false);
kernelSizeTrackBar = new LabeledTrackBar(this, "KernelSize", ar);
kernelSizeTrackBar -> addCallback(XmNtrackBarScrollCallback, this,
(Callback)&MainView::commonTrackBarCallback, NULL);
ar.reset();
ar.set(XmNminimum, 0);
ar.set(XmNmaximum, SIGMA_COLOR_MAX);
ar.set(XmNposition, sigmaColor);
ar.set(XmNdisplayOddValue, false);
ar.set(XmNdisplayFloatValue, false);
sigmaColorTrackBar = new LabeledTrackBar(this, "SigmaColor", ar);
sigmaColorTrackBar -> addCallback(XmNtrackBarScrollCallback, this,
(Callback)&MainView::commonTrackBarCallback, NULL);
ar.reset();
ar.set(XmNminimum, 0);
ar.set(XmNmaximum, SIGMA_SPACE_MAX);
ar.set(XmNposition, sigmaSpace);
ar.set(XmNdisplayFloatValue, true);
ar.set(XmNdisplayOddValue, false);
sigmaSpaceTrackBar = new LabeledTrackBar(this, "SigmaSpace", ar);
sigmaSpaceTrackBar -> addCallback(XmNtrackBarScrollCallback, this,
(Callback)&MainView::commonTrackBarCallback, NULL);
addCallback(XmNmenuCallback, IDM_EXIT, this,
(Callback)&MainView::confirm, NULL);
filteredImage -> filter(ksize, sigmaColor, sigmaSpace);
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 filtered image into the filename.
filteredImage->writeImage(savedImageFile);
} else {
saveAs(action);
}
} catch (Exception& ex) {
caught(ex);
}
}
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 binarized image into the filename.
filteredImage->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, 440);
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.