pHistogram Class Reference

#include <pHistogram.h>

List of all members.

Public Member Functions
	pHistogram (std::string filePath)
	pHistogram (vtkImageData *imageData)
	~pHistogram ()
void	setImagePath (std::string filePath)
std::vector< int >	getPoints ()
void	buildHistogram ()
void	buildHistogram (vtkImageData *imageData)
void	initializePoints (int xDimension)
void	setPoints (vtkImageData *imageData)
vtkImageData *	getHistogram ()
int	getIndex (int gValue)
void	setSize (int nSize)
int	getImageSize ()
int	getSize ()
int	getMaximumLevelOfGrey ()
int	getMinimumLevelOfGrey ()
int	getHistogramPoint (int gValue)
Private Attributes
vtkImageData *	points
std::string	path
int	size
int	maxLevelOfGrey
int	minLevelOfGrey
int	sizeImage

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Detailed Description

Definition at line 41 of file pHistogram.h.

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Constructor & Destructor Documentation

pHistogram::pHistogram

(

std::string

filePath

)

Definition at line 37 of file pHistogram.cxx.

References buildHistogram(), path, points, size, and sizeImage.

{
        path=filePath;
        points= vtkImageData::New();
        size=100;
        sizeImage=0;
        buildHistogram();
}

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pHistogram::pHistogram

(

vtkImageData *

imageData

)

Definition at line 46 of file pHistogram.cxx.

References buildHistogram(), points, size, and sizeImage.

{
        points= vtkImageData::New();
        size=100;
        sizeImage=0;
        //cast
        /*
        vtkImageCast* cast= vtkImageCast::New();
        cast->SetInput(imageData);
        cast->SetOutputScalarTypeToInt();
        cast->Update();
        */
        //build the histogram
        buildHistogram(imageData);
}

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pHistogram::~pHistogram

(

)

Definition at line 62 of file pHistogram.cxx.

References points.

{
        if(points!=NULL)points->Delete();
}

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Member Function Documentation

void pHistogram::buildHistogram

(

vtkImageData *

imageData

)

Definition at line 107 of file pHistogram.cxx.

References initializePoints(), setPoints(), and size.

{
        initializePoints(size);
        setPoints(imageData);   
}

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void pHistogram::buildHistogram

(

)

Definition at line 75 of file pHistogram.cxx.

References initializePoints(), path, points, setPoints(), and size.

Referenced by pHistogram().

{
        /*
                reader: is the reader of the image
                histogramVector:Is the image data of the original image
                imageData: vtkImageData of the image that we are reading
                range :it has the (min/max) range of the levels of grey
        */
        points= vtkImageData::New();
        vtkMetaImageReader *reader = vtkMetaImageReader::New();
        vtkImageData* imageData=NULL;
        double range[2];
        
        //reading
        reader->SetFileName(path.c_str());
        reader->Update();

        
        // getting the data 
        imageData=reader->GetOutput();
        imageData->GetScalarRange(range);
        initializePoints(size);
        setPoints(imageData);
        
}

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vtkImageData * pHistogram::getHistogram

(

)

Definition at line 206 of file pHistogram.cxx.

References points.

Referenced by HistogramWidget::drawHistogram(), and Histogram::drawHistogram().

{
        return points;
}

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int pHistogram::getHistogramPoint

(

int

gValue

)

Definition at line 263 of file pHistogram.cxx.

References points.

Referenced by HistogramWidget::getHistogramPoint(), and Histogram::getHistogramPoint().

{
        //double p=((float)gValue-minLevelOfGrey)/(maxLevelOfGrey-minLevelOfGrey); // JPRx
        //double k=p*size;

        unsigned short* dataHistogramPointer=NULL;
        dataHistogramPointer=(unsigned short*)points->GetScalarPointer(0,0,0);

        return dataHistogramPointer[gValue];
}

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int pHistogram::getImageSize

(

)

Definition at line 234 of file pHistogram.cxx.

References sizeImage.

{ 
        return sizeImage;
}

int pHistogram::getIndex

(

int

gValue

)

Definition at line 216 of file pHistogram.cxx.

References maxLevelOfGrey, minLevelOfGrey, and size.

Referenced by setPoints().

{

        double p=((double)gValue-minLevelOfGrey)/(maxLevelOfGrey-minLevelOfGrey);
        double k=p*(size-1);
        //std::cout<<"gValue "<<gValue<<" k "<<k<<std::endl;
        return (int)k;
}

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int pHistogram::getMaximumLevelOfGrey

(

)

Definition at line 248 of file pHistogram.cxx.

References maxLevelOfGrey.

Referenced by HistogramWidget::drawTransferenceFunction().

{
        return maxLevelOfGrey;
}

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int pHistogram::getMinimumLevelOfGrey

(

)

Definition at line 255 of file pHistogram.cxx.

References minLevelOfGrey.

{
        return minLevelOfGrey;
}

std::vector<int> pHistogram::getPoints

(

)

int pHistogram::getSize

(

)

Definition at line 241 of file pHistogram.cxx.

References size.

Referenced by HistogramWidget::drawHistogram(), and Histogram::drawHistogram().

{
        return size;
}

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void pHistogram::initializePoints

(

int

xDimension

)

Definition at line 116 of file pHistogram.cxx.

References points.

Referenced by buildHistogram().

{
        //setting image data of the points
        points->SetDimensions(xDimension,1,1);
        points->SetScalarTypeToUnsignedShort();
        points->AllocateScalars();
        points->Update();
}

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void pHistogram::setImagePath

(

std::string

filePath

)

Definition at line 70 of file pHistogram.cxx.

References path.

{
        path=filePath;
}

void pHistogram::setPoints

(

vtkImageData *

imageData

)

Definition at line 128 of file pHistogram.cxx.

References getIndex(), maxLevelOfGrey, minLevelOfGrey, points, size, and sizeImage.

Referenced by buildHistogram().

{
        /*
                Pointers
        */
        unsigned short* dataImagePointer=NULL;
        unsigned short* dataHistogramPointer=NULL;

        dataImagePointer=(unsigned short*)imageData->GetScalarPointer(0,0,0);
        dataHistogramPointer=(unsigned short*)points->GetScalarPointer(0,0,0);
        
        /*
         Range of greys
        */
        double range[2];
        if(imageData==NULL)
                range[1]=1;
        else
                imageData->GetScalarRange(range);
        /*
         Setting the  minimun and maximum levels of grey
        */
        maxLevelOfGrey=(int)range[1];
        minLevelOfGrey=(int)range[0];
        //std::cout<<"maxLevelOfGrey "<<maxLevelOfGrey<<" minLevelOfGrey "<<minLevelOfGrey<<std::endl;
        /*
         Image Size
        */
        int ext[6];
        imageData->GetExtent(ext);
        int sx,sy,sz;
        sx=ext[1]+1;
        sy=ext[3]+1;
        sz=ext[5]+1;

        sizeImage=sx*sy*sz;

        int i;
        /*
          getting ready the histogram
        */
        for(i=0;i<size;i++)
        {
                dataHistogramPointer[i]=0;
        }
        
        /*
        Constructing the Histogram
        */
        //int k=size/(maxLevelOfGrey-minLevelOfGrey);
        int j=0;
        for(i=0;i<sizeImage;i++)
        {
                /*
                 hashing the histogram
                */
                //double p=((float)*dataImagePointer-minLevelOfGrey);
                //j=p*k;
                
                j=getIndex(*dataImagePointer);
                //std::cout<<j<<std::endl;
                dataHistogramPointer[j]++;
                dataImagePointer++;
        }
        /*
        BORRAME
        */
        /*
        k=0;
        for(i=0;i<size;i++)
        {
                k=dataHistogramPointer[i];
        }
        */
}

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void pHistogram::setSize

(

int

nSize

)

Definition at line 227 of file pHistogram.cxx.

References size.

{
        size=nSize;
}

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Member Data Documentation

int pHistogram::maxLevelOfGrey [private]

Definition at line 141 of file pHistogram.h.

Referenced by getIndex(), getMaximumLevelOfGrey(), and setPoints().

int pHistogram::minLevelOfGrey [private]

Definition at line 145 of file pHistogram.h.

Referenced by getIndex(), getMinimumLevelOfGrey(), and setPoints().

std::string pHistogram::path [private]

Definition at line 133 of file pHistogram.h.

Referenced by buildHistogram(), pHistogram(), and setImagePath().

vtkImageData* pHistogram::points [private]

Definition at line 129 of file pHistogram.h.

Referenced by buildHistogram(), getHistogram(), getHistogramPoint(), initializePoints(), pHistogram(), setPoints(), and ~pHistogram().

int pHistogram::size [private]

Definition at line 137 of file pHistogram.h.

Referenced by buildHistogram(), getIndex(), getSize(), pHistogram(), setPoints(), and setSize().

int pHistogram::sizeImage [private]

Definition at line 149 of file pHistogram.h.

Referenced by getImageSize(), pHistogram(), and setPoints().

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The documentation for this class was generated from the following files:

• /home/davila/Creatis/creaMaracasVisu/lib/maracasVisuLib/src/interface/wxWindows/widgets/pPlotter/pHistogram.h
• /home/davila/Creatis/creaMaracasVisu/lib/maracasVisuLib/src/interface/wxWindows/widgets/pPlotter/pHistogram.cxx