geo/tcNegativeProduct.h

   1 /***************************************************************************
   2  *   This file is part of Tecorrec.                                        *
   3  *   Copyright 2008 James Hogan <james@albanarts.com>                      *
   4  *                                                                         *
   5  *   Tecorrec is free software: you can redistribute it and/or modify      *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation, either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   Tecorrec is distributed in the hope that it will be useful,           *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with Tecorrec.  If not, write to the Free Software Foundation,  *
  17  *   Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   *
  18  ***************************************************************************/
  19
  20 #ifndef _tcNegativeProduct_h_
  21 #define _tcNegativeProduct_h_
  22
  23 /**
  24  * @file tcNegativeProduct.h
  25  * @brief Highlights the parts of an image which are dark in all channels.
  26  */
  27
  28 #include "tcChannel.h"
  29
  30 #include <QList>
  31
  32 class QSlider;
  33 class QLabel;
  34 class QComboBox;
  35
  36 /// Highlights the parts of an image which are dark in all channels.
  37 class tcNegativeProduct : public tcChannel
  38 {
  39     Q_OBJECT
  40
  41   public:
  42
  43     /*
  44      * Constructors + destructor
  45      */
  46
  47     /// Primary constructor.
  48     tcNegativeProduct(const QList<tcChannel*>& inputChannels);
  49
  50     /// Destructor.
  51     virtual ~tcNegativeProduct();
  52
  53     /*
  54      * Main image interface
  55      */
  56
  57     // Reimplemented
  58     virtual tcChannelConfigWidget* configWidget();
  59
  60   protected:
  61
  62     /*
  63      * Interface for derived class to implement
  64      */
  65
  66     // Reimplemented
  67     virtual void roundPortion(double* x1, double* y1, double* x2, double* y2);
  68
  69     // Reimplemented
  70     virtual tcAbstractPixelData* loadPortion(double x1, double y1, double x2, double y2);
  71
  72   signals:
  73
  74     /*
  75      * Signals
  76      */
  77
  78     /// Emitted when the threshold text changes.
  79     void thresholdChanged(const QString& threshold);
  80
  81   private slots:
  82
  83     /*
  84      * Private slots
  85      */
  86
  87     /// Set whether the theshold is enabled.
  88     void setThresholdEnabled(bool thresholdEnabled);
  89
  90     /// Move the theshold value slider.
  91     void moveThreshold(int threshold);
  92
  93     /// Set the theshold value.
  94     void setThreshold(int threshold);
  95
  96     /// Indicates that the power slider of a channel has moved.
  97     void movePower(int channel);
  98
  99     /// Indicates that the power of a channel has changed.
 100     void changePower(int channel);
 101
 102     /// Optimise the threshold for the parameters using a classification channel.
 103     void optimiseThreshold();
 104
 105     /// Save threshold errors.
 106     void saveThresholdErrors();
 107
 108     /// Optimise the parameters using a classification channel.
 109     void optimiseParameters();
 110
 111     /// Save parameters to a file.
 112     void saveParams();
 113
 114     /// Load parameters from a file.
 115     void loadParams();
 116
 117   private:
 118
 119     /*
 120      * Private functions
 121      */
 122
 123     /// Calculate an error using some channel as a classifier.
 124     float calculateError(tcChannel* classifier);
 125
 126   private:
 127
 128     /*
 129      * Variables
 130      */
 131
 132     /// Input channels.
 133     QList<tcChannel*> m_inputChannels;
 134
 135     /// Whether threshold is enabled.
 136     bool m_thresholdEnabled;
 137
 138     /// Threshold to classify shadows.
 139     float m_threshold;
 140
 141     /// Powers to raise the negative channels to.
 142     float* m_powers;
 143
 144     /// Filename in which to save threshold-error values.
 145     QString m_saveThresholdError;
 146
 147     /// Filename in which to save parameter-error values.
 148     QString m_saveParametersError;
 149
 150     /// Filename in which to save parameters.
 151     QString m_saveParameters;
 152
 153     /// Configuration widget.
 154     tcChannelConfigWidget* m_configWidget;
 155
 156     /// Threshold slider.
 157     QSlider* m_sliderThreshold;
 158
 159     /// Power sliders in config widget.
 160     QList<QSlider*> m_powerSliders;
 161
 162     /// Power sliders labelsin config widget.
 163     QList<QLabel*> m_powerLabels;
 164
 165     /// Classifier channel.
 166     QComboBox* m_comboClassifier;
 167
 168     /// Slider for log learning rate.
 169     QSlider* m_sliderLearningRate;
 170
 171     /// Label to show error.
 172     QLabel* m_labelError;
 173
 174     /// Last calculated optimal threshold error.
 175     int m_optimalThresholdError;
 176 };
 177
 178 #endif