lib/maracasVisuLib/src/interface/wxWindows/widgets/pPlotter/pHistogram.cxx

   1 /*# ---------------------------------------------------------------------
   2 #
   3 # Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
   4 #                        pour la Sant�)
   5 # Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
   6 # Previous Authors : Laurent Guigues, Jean-Pierre Roux
   7 # CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
   8 #
   9 #  This software is governed by the CeCILL-B license under French law and
  10 #  abiding by the rules of distribution of free software. You can  use,
  11 #  modify and/ or redistribute the software under the terms of the CeCILL-B
  12 #  license as circulated by CEA, CNRS and INRIA at the following URL
  13 #  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  14 #  or in the file LICENSE.txt.
  15 #
  16 #  As a counterpart to the access to the source code and  rights to copy,
  17 #  modify and redistribute granted by the license, users are provided only
  18 #  with a limited warranty  and the software's author,  the holder of the
  19 #  economic rights,  and the successive licensors  have only  limited
  20 #  liability.
  21 #
  22 #  The fact that you are presently reading this means that you have had
  23 #  knowledge of the CeCILL-B license and that you accept its terms.
  24 # ------------------------------------------------------------------------ */
  25
  26
  27 //----------------------------------------------------------------------------
  28 // Class definition include
  29 //----------------------------------------------------------------------------
  30
  31 #include "pHistogram.h"
  32 //#include "vtkJPEGReader.h"
  33 #include "vtkImageData.h"
  34 #include  "vtkImageCast.h"
  35 //-----------------
  36 // C++
  37 //-----------------
  38 #include <iostream>
  39 #include <fstream>
  40 #include <string>
  41 #include <vector>
  42
  43 // ----------------------------------------------------------------------------
  44 // WX headers inclusion.
  45 // For compilers that support precompilation, includes <wx/wx.h>.
  46 // ----------------------------------------------------------------------------
  47
  48 /*
  49 #ifndef WX_PRECOMP
  50 #include <wx/wx.h>
  51 #endif
  52 */
  53 //----------------------------------------------------------------------------
  54 // Class implementation
  55 //----------------------------------------------------------------------------
  56
  57 //IMPLEMENT_CLASS(pHistogram, wxObject)
  58
  59 //----------------------------------------------------------------------------
  60 // Constructors
  61 //----------------------------------------------------------------------------
  62 pHistogram::pHistogram(std::string filePath)
  63 {
  64         path=filePath;
  65         points= vtkImageData::New();
  66         size=100;
  67         sizeImage=0;
  68         buildHistogram();
  69 }
  70
  71 pHistogram::pHistogram(vtkImageData* imageData)
  72 {
  73         points= vtkImageData::New();
  74         size=100;
  75         sizeImage=0;
  76         //cast
  77         /*
  78         vtkImageCast* cast= vtkImageCast::New();
  79         cast->SetInput(imageData);
  80         cast->SetOutputScalarTypeToInt();
  81         cast->Update();
  82         */
  83         //build the histogram
  84         buildHistogram(imageData);
  85 }
  86
  87 pHistogram::~pHistogram()
  88 {
  89         if(points!=NULL)points->Delete();
  90 }
  91 //----------------------------------------------------------------------------
  92 // Methods
  93 //----------------------------------------------------------------------------
  94
  95 void pHistogram::setImagePath(std::string filePath)
  96 {
  97         path=filePath;
  98 }
  99
 100 void pHistogram::buildHistogram()
 101 {
 102         /*
 103                 reader: is the reader of the image
 104                 histogramVector:Is the image data of the original image
 105                 imageData: vtkImageData of the image that we are reading
 106                 range :it has the (min/max) range of the levels of grey
 107         */
 108         points= vtkImageData::New();
 109         vtkMetaImageReader *reader = vtkMetaImageReader::New();
 110         vtkImageData* imageData=NULL;
 111         double range[2];
 112
 113         //reading
 114         reader->SetFileName(path.c_str());
 115         reader->Update();
 116
 117
 118         // getting the data
 119         imageData=reader->GetOutput();
 120         imageData->GetScalarRange(range);
 121         initializePoints(size);
 122         setPoints(imageData);
 123
 124 }
 125
 126 /*
 127 Calculate the histogram and save it in the attribute points
 128 it is used if the user had given the imageData
 129 Pre: Size had to be setted if the user wants
 130 another value that 100
 131 */
 132 void pHistogram::buildHistogram(vtkImageData* imageData)
 133 {
 134         initializePoints(size);
 135         setPoints(imageData);
 136 }
 137
 138 /*
 139   getting ready the points
 140 */
 141 void pHistogram::initializePoints(int xDimension)
 142 {
 143         //setting image data of the points
 144         points->SetDimensions(xDimension,1,1);
 145 //EED   points->SetScalarTypeToUnsignedShort();
 146         points->SetScalarTypeToShort();
 147         points->AllocateScalars();
 148         points->Update();
 149 }
 150
 151 /*
 152          constructing the histogram
 153 */
 154 void pHistogram::setPoints(vtkImageData* imageData)
 155 {
 156         /*
 157                 Pointers
 158         */
 159         unsigned short* dataImagePointerUS      = NULL;
 160         short* dataImagePointerS                = NULL;
 161         double* dataImagePointerD               = NULL;
 162
 163         short* dataHistogramPointer             = NULL;
 164
 165         dataImagePointerUS      = (unsigned short*)imageData->GetScalarPointer(0,0,0);
 166         dataImagePointerS       = (short*)imageData->GetScalarPointer(0,0,0);
 167         dataImagePointerD       = (double*)imageData->GetScalarPointer(0,0,0);
 168
 169         dataHistogramPointer    = (short*)points->GetScalarPointer(0,0,0);
 170
 171         /*
 172          Range of greys
 173         */
 174         double range[2];
 175         if(imageData==NULL)
 176                 range[1]=1;
 177         else
 178                 imageData->GetScalarRange(range);
 179         /*
 180          Setting the  minimun and maximum levels of grey
 181         */
 182         maxLevelOfGrey=range[1];
 183         minLevelOfGrey=range[0];
 184         //std::cout<<"maxLevelOfGrey "<<maxLevelOfGrey<<" minLevelOfGrey "<<minLevelOfGrey<<std::endl;
 185         /*
 186          Image Size
 187         */
 188         int ext[6];
 189         imageData->GetExtent(ext);
 190         int sx,sy,sz;
 191         sx=ext[1]+1;
 192         sy=ext[3]+1;
 193         sz=ext[5]+1;
 194
 195         sizeImage=sx*sy*sz;
 196
 197         int i;
 198         /*
 199           getting ready the histogram
 200         */
 201         for(i=0;i<size;i++)
 202         {
 203                 dataHistogramPointer[i]=0;
 204         }
 205
 206         /*
 207         Constructing the Histogram
 208         */
 209         //int k=size/(maxLevelOfGrey-minLevelOfGrey);
 210         int j=0;
 211         for(i=0;i<sizeImage;i++)
 212         {
 213                 /*
 214                  hashing the histogram
 215                 */
 216                 //double p=((float)*dataImagePointer-minLevelOfGrey);
 217                 //j=p*k;
 218                 if (imageData->GetScalarType()==VTK_UNSIGNED_SHORT)
 219                 {
 220                         j=getIndex(*dataImagePointerUS);
 221                         dataImagePointerUS++;
 222                 }
 223                 if (imageData->GetScalarType()==VTK_SHORT)
 224                 {
 225                         j=getIndex(*dataImagePointerS);
 226                         dataImagePointerS++;
 227                 }
 228                 if (imageData->GetScalarType()==VTK_DOUBLE)
 229                 {
 230                         j=getIndex(*dataImagePointerD);
 231                         dataImagePointerD++;
 232                 }
 233 //EED           j=getIndex(*dataImagePointer);
 234
 235                 //std::cout<<j<<std::endl;
 236                 dataHistogramPointer[j]++;
 237         }
 238         /*
 239         BORRAME
 240         */
 241         /*
 242         k=0;
 243         for(i=0;i<size;i++)
 244         {
 245                 k=dataHistogramPointer[i];
 246         }
 247         */
 248 }
 249 /*
 250 Returns the poins of the histograms
 251 */
 252 vtkImageData* pHistogram::getHistogram()
 253 {
 254         return points;
 255 }
 256
 257 /*
 258 hash por getting the index for the histogram vector of the original
 259 image
 260 @gValue: Level of grey for which wants the index in the histogrram
 261 */
 262 int pHistogram::getIndex(double gValue)
 263 {
 264
 265         double p=((double)gValue-minLevelOfGrey)/(maxLevelOfGrey-minLevelOfGrey);
 266         double k=p*(size-1);
 267         //std::cout<<"gValue "<<gValue<<" k "<<k<<std::endl;
 268         return (int)k;
 269 }
 270 /*
 271 Setting the size
 272 */
 273 void pHistogram::setSize(int nSize)
 274 {
 275         size=nSize;
 276 }
 277 /*
 278         Get Image Size
 279 */
 280 int pHistogram::getImageSize()
 281 {
 282         return sizeImage;
 283 }
 284 /*
 285         Get Size of the histogram
 286 */
 287 int pHistogram::getSize()
 288 {
 289         return size;
 290 }
 291 /*
 292         Get the maximum value of grey of the histogram
 293 */
 294 int pHistogram::getMaximumLevelOfGrey()
 295 {
 296         return maxLevelOfGrey;
 297 }
 298 /*
 299         Get the minimum value of grey of the histogram
 300 */
 301 int pHistogram::getMinimumLevelOfGrey()
 302 {
 303         return minLevelOfGrey;
 304 }
 305 /*
 306                 get a point of the Histogram
 307                 given the grey value
 308 */
 309 int pHistogram::getHistogramPoint(int gValue)
 310 {
 311         //double p=((float)gValue-minLevelOfGrey)/(maxLevelOfGrey-minLevelOfGrey); // JPRx
 312         //double k=p*size;
 313
 314         unsigned short* dataHistogramPointer=NULL;
 315         dataHistogramPointer=(unsigned short*)points->GetScalarPointer(0,0,0);
 316
 317         return dataHistogramPointer[gValue];
 318 }
 319
 320