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SOL9 Sample: LinearFilter
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1 Screenshot
2 Source code
/*
* LinearFilter.cpp
* Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*/
//2017/10/01
// Simple linear filter based on cv::filter2D API.
//
// See: http://docs.opencv.org/3.0-beta/modules/imgproc/doc/filtering.html
//2017/12/01 Added save, saveAs methods to MainView.
#define _CONSOLE_
#include <sol/ModuleFileName.h>
#include <sol/DropFiles.h>
#include <sol/LabeledTrackBar.h>
#include <sol/FileDialog.h>
#include <sol/opencv/OpenCVApplicationView.h>
#include <sol/opencv/OpenCVScaleComboBox.h>
#include <sol/opencv/OpenCVScrolledImageView.h>
namespace SOL {
class MainView :public OpenCVApplicationView {
private:
////////////////////////////////////////////////////////////////////////////////////////
//Inner classes start.
class OriginalImageView :public OpenCVScrolledImageView {
private:
cv::Mat originalImage;
public:
OriginalImageView(View* parent, const char* name, Args& args)
:OpenCVScrolledImageView(parent, name, args)
{
try {
const char* filename = (const char*)args.get(XmNimageFileName);
int imageLoadingFlag = args.get(XmNimageLoadingFlag);
int scalingRatio = args.get(XmNimageScalingRatio);
loadImage(filename, imageLoadingFlag, scalingRatio);
} catch (SOL::Exception ex) {
caught(ex);
}
}
~OriginalImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR, int scalingRatio=100)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
setScaledImage(originalImage, scalingRatio);
} catch (Exception& ex) {
caught(ex);
}
}
void rescale(int scalingRatio)
{
setScaledImage(originalImage, scalingRatio);
}
};
class FilteredImageView :public OpenCVScrolledImageView {
private:
cv::Mat originalImage;
cv::Mat filteredImage;
public:
FilteredImageView(View* parent, const char* name, Args& args)
:OpenCVScrolledImageView(parent, name, args)
{
try {
const char* filename = (const char*)args.get(XmNimageFileName);
int imageLoadingFlag = args.get(XmNimageLoadingFlag);
int scalingRatio = args.get(XmNimageScalingRatio);
loadImage(filename, imageLoadingFlag, scalingRatio);
} catch (SOL::Exception ex) {
caught(ex);
}
}
~FilteredImageView()
{
}
void loadImage(const char* filename, int imageLoadingFlag= CV_LOAD_IMAGE_COLOR, int scalingRatio=100)
{
try {
originalImage = readImage(filename, imageLoadingFlag);
filteredImage = originalImage;
setScaledImage(filteredImage, scalingRatio);
} catch (Exception& ex) {
caught(ex);
}
}
/*
*/
void filter(int ksize, int scalingRatio)
{
cv::Mat kernel = Mat::ones(ksize, ksize, CV_32F) / (float)(ksize*ksize);
cv::Mat newImage = originalImage.clone();
cv::filter2D(originalImage,
newImage,
-1 ,
kernel,
cv::Point(-1, -1),
0,
BORDER_DEFAULT );
filteredImage = newImage;
setScaledImage(filteredImage, scalingRatio);
refresh();
}
void rescale(int scalingRatio)
{
setScaledImage(filteredImage, scalingRatio);
}
};
//Inner classes end.
////////////////////////////////////////////////////////////////////////////////////////
StringT<char> imageFile;
StringT<char> savedImageFile;
SmartPtr<OriginalImageView> originalImage;
SmartPtr<FilteredImageView> filteredImage;
int imageLoadingFlag;
int imageScalingRatio;
SmartPtr<OpenCVScaleComboBox> scaleComboBox;
int ksize;
SmartPtr<LabeledTrackBar> ksizeTrackBar;
FileDialog filedlg;
void updateCaption()
{
char caption[MAX_PATH];
sprintf_s(caption, CountOf(caption), "%s - %s",
(const char*)imageFile,
getAppName());
setText(caption);
}
void scaleChanged(Action& action)
{
imageScalingRatio = scaleComboBox->getScale();
originalImage -> rescale(imageScalingRatio);
filteredImage -> rescale(imageScalingRatio);
}
void trackBarScrolled(Action& action)
{
ksize = ksizeTrackBar->getPosition();
int ks = (ksize/2)*2 +1;
filteredImage -> filter(ks, imageScalingRatio);
}
void resize(int w, int h)
{
if (originalImage && filteredImage && ksizeTrackBar) {
originalImage -> reshape(2, 2, (w-160)/2-1, h-4);
filteredImage -> reshape((w-160)/2+1, 2, (w-160)/2-1, h-4);
scaleComboBox -> reshape(w-155 + 10, 10, 140, 60);
ksizeTrackBar -> reshape(w-155 + 10, 60, 140, 60);
}
}
void openFile(const char* filename)
{
try {
originalImage -> loadImage(filename, imageLoadingFlag, imageScalingRatio);
filteredImage -> loadImage(filename, imageLoadingFlag, imageScalingRatio);
const char* fname = strrchr(filename, '\\');
if (fname) {
fname++;
}
imageFile = fname;
int ks = (ksize/2)*2 +1;
filteredImage -> filter(ks, imageScalingRatio);
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 {
imageScalingRatio = 80;
imageFile = "..\\images\\MultipleTexturedCube.png";
imageLoadingFlag = CV_LOAD_IMAGE_COLOR;
Args ar;
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
ar.set(XmNimageScalingRatio, imageScalingRatio);
originalImage = new OriginalImageView(this, "", ar);
originalImage -> addCallback(XmNdropCallback, this,
(Callback)&MainView::dropFiles, NULL);
ar.reset();
ar.set(XmNimageFileName, imageFile);
ar.set(XmNimageLoadingFlag, imageLoadingFlag);
ar.set(XmNimageScalingRatio, imageScalingRatio);
filteredImage = new FilteredImageView(this, "", ar);
ar.reset();
scaleComboBox = new OpenCVScaleComboBox(this, "Scale", ar);
scaleComboBox -> addCallback(XmNselChangeCallback, this,
(Callback)&MainView::scaleChanged, NULL);
ksize = 10;
ar.reset();
ar.set(XmNminimum, 0);
ar.set(XmNmaximum, 31);
ar.set(XmNposition, 10);
ksizeTrackBar = new LabeledTrackBar(this, "KernelSize", ar);
ksizeTrackBar -> addCallback(XmNtrackBarScrollCallback, this,
(Callback)&MainView::trackBarScrolled, NULL);
addCallback(XmNmenuCallback, IDM_EXIT, this,
(Callback)&MainView::confirm, NULL);
int ks = (ksize/2)*2 +1;
filteredImage -> filter(ks, imageScalingRatio);
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);
}
}
//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 filtered 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, 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.