Added MSE operation

app/Operations/MeanSquaredErrorOp.cpp

+/*
+ * Copyright 2011-2012 INSA Rennes
+ *
+ * This file is part of EIImage.
+ *
+ * EIImage is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EIImage is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EIImage.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <QLabel>
+#include <QDialog>
+#include <QDialogButtonBox>
+#include <QFormLayout>
+#include <Image.h>
+
+#include "ImageListBox.h"
+#include "../Tools.h"
+
+#include "MeanSquaredErrorOp.h"
+
+using namespace std;
+using namespace imagein;
+
+MeanSquaredErrorOp::MeanSquaredErrorOp() : Operation(Tools::tr("Mean squared error").toStdString())
+{
+}
+
+bool MeanSquaredErrorOp::needCurrentImg() {
+    return true;
+}
+
+std::vector<QWidget*> MeanSquaredErrorOp::operator()(const imagein::Image* image, const std::map<const imagein::Image*, std::string>& imgList) {
+
+    vector<QWidget*> result;
+
+    QDialog* dialog = new QDialog();
+    dialog->setWindowTitle(dialog->tr("Compare to..."));
+    dialog->setMinimumWidth(180);
+    QFormLayout* layout = new QFormLayout();
+    dialog->setLayout(layout);
+
+    QString currentImgName = QString(imgList.find(image)->second.c_str());
+
+    ImageListBox* imageBox = new ImageListBox(dialog, image, imgList);
+    layout->insertRow(0, QString("Compare %1 to : ").arg(currentImgName), imageBox);
+
+    QDialogButtonBox* buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel, Qt::Horizontal, dialog);
+    layout->insertRow(1, buttonBox);
+    QObject::connect(buttonBox, SIGNAL(accepted()), dialog, SLOT(accept()));
+    QObject::connect(buttonBox, SIGNAL(rejected()), dialog, SLOT(reject()));
+
+    QDialog::DialogCode code = static_cast<QDialog::DialogCode>(dialog->exec());
+
+    if(code!=QDialog::Accepted) {
+        return result;
+    }
+
+    const Image* sndImg = imageBox->currentImage();
+    unsigned int maxWidth = min(image->getWidth(), sndImg->getWidth());
+    unsigned int maxHeight = min(image->getHeight(), sndImg->getHeight());
+    unsigned int maxChannel = min(image->getNbChannels(), sndImg->getNbChannels());
+
+    double mse = 0, me = 0;
+    for(unsigned int c = 0; c < maxChannel; ++c) {
+        for(unsigned int j = 0; j < maxHeight; ++j) {
+            for(unsigned int i = 0; i < maxWidth; ++i) {
+                int deviation = image->getPixel(i, j, c) - sndImg->getPixel(i, j, c);
+                mse += deviation*deviation;
+                me += abs(deviation);
+            }
+        }
+    }
+
+    mse = mse / static_cast<double>(maxChannel * maxWidth * maxHeight);
+    me = me / static_cast<double>(maxChannel * maxWidth * maxHeight);
+    QString text = QString("Mean squarred error : %1 (mean error : %2)");
+    text = text.arg(mse, 0, 'f', 2);
+    text = text.arg(me, 0, 'f', 2);
+
+    result.push_back(new QLabel(text));
+
+    return result;
+
+
+}

app/Operations/MeanSquaredErrorOp.h

+/*
+ * Copyright 2011-2012 INSA Rennes
+ *
+ * This file is part of EIImage.
+ *
+ * EIImage is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EIImage is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EIImage.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef MEANSQUAREDERROROP_H
+#define MEANSQUAREDERROROP_H
+
+#include "Operation.h"
+
+class MeanSquaredErrorOp : public Operation
+{
+public:
+    MeanSquaredErrorOp();
+    std::vector<QWidget*> operator()(const imagein::Image*, const std::map<const imagein::Image*, std::string>&);
+
+    bool needCurrentImg();
+};
+
+#endif // MEANSQUAREDERROROP_H