DGtal::RawReader< TImageContainer > Struct Template Reference

#include <RawReader.h>

Public Types
typedef TImageContainer	ImageContainer
typedef TImageContainer::Domain::Vector	Vector

Public Member Functions
	BOOST_STATIC_ASSERT ((ImageContainer::Domain::dimension==2)||(ImageContainer::Domain::dimension==3))

Static Public Member Functions
static ImageContainer	importRaw8 (const std::string &filename, const Vector &extent) throw (DGtal::IOException)

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Detailed Description

template<typename TImageContainer>
struct DGtal::RawReader< TImageContainer >

Aim: implements methods to read a "Vol" file format.

Description of template class 'RawReader'

The main import method "importRaw8" returns an instance of the template parameter TImageContainer.

Example usage:

     ...
     typedef SpaceND<int,3> Space3;
     typedef HyperRectDomain<Space3> TDomain;
     typedef TDomain::Point Point;
    
     //Default image container = STLVector
     typedef ImageSelector<TDomain, int>::Type Image;
     
     RawReader<Image> reader;
     Image image = reader.importRaw8("data.raw");
    
     trace.info() << image <<endl;
     ...

Template Parameters:

TImageContainer

the image container to use.

See also:

testRawReader.cpp

Definition at line 84 of file RawReader.h.

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Member Typedef Documentation

template<typename TImageContainer >

typedef TImageContainer DGtal::RawReader< TImageContainer >::ImageContainer

Definition at line 89 of file RawReader.h.

template<typename TImageContainer >

typedef TImageContainer::Domain::Vector DGtal::RawReader< TImageContainer >::Vector

Definition at line 90 of file RawReader.h.

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Member Function Documentation

template<typename TImageContainer >

DGtal::RawReader< TImageContainer >::BOOST_STATIC_ASSERT

(

(ImageContainer::Domain::dimension==2)||(ImageContainer::Domain::dimension==3)

)

template<typename T >

T DGtal::RawReader< T >::importRaw8 ( const std::string &  filename, const Vector &  extent  ) throw (DGtal::IOException)

inlinestatic

Main method to import a Raw (8bits) into an instance of the template parameter ImageContainer.

Parameters:

filename	the file name to import.
extent	the size of the raw data set.

Returns:

an instance of the ImageContainer.

Definition at line 40 of file RawReader.ih.

References DGtal::Trace::error(), and DGtal::trace.

{
  FILE * fin;
  DGtal::IOException dgtalerror;

  fin = fopen( filename.c_str() , "r" );

  if (fin == NULL) 
      trace.error() << "RawReader : can't open "<< filename<<endl;
  
  
  typename T::Point firstPoint;
  typename T::Point lastPoint;
      
  firstPoint = T::Point::zero;
  lastPoint = extent;
  unsigned int size=1;
  for(unsigned int i=0; i < T::Domain::dimension; i++)
    {
      size *= lastPoint[i];      
      lastPoint[i]--;
    }

    
  typename T::Domain domain(firstPoint,lastPoint);
  T image(domain);
  typename T::Value val;

  //We scan the Raw file
  typename T::Domain::ConstIterator it = domain.begin(),itend=domain.end();
  unsigned int count=0;

  while ((fin) && (it != itend))
    {
      val = getc(fin);  
      image.setValue( (*it),val);
      it++;
      count++;
    }
  
  fclose( fin );
  
  if (count != size )
    {
      trace.error() << "RawReader: error while opening file "<<filename<<endl;
      throw dgtalerror;
    }
  else
    return image;
}

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

• RawReader.h
• RawReader.ih