DGtal::PPMReader< TImageContainer, TFunctor > Struct Template Reference

Aim: Import a 2D or 3D using the Netpbm formats (ASCII mode). More...

#include <DGtal/io/readers/PPMReader.h>

Public Types
enum	MagicNumber {   P1 , P2 , P3 , P4 ,   P5 , P6 }
typedef TImageContainer	ImageContainer
typedef TImageContainer::Domain::Vector	Vector
typedef TImageContainer::Value	Value
typedef TFunctor	Functor

Public Member Functions
	BOOST_CONCEPT_ASSERT ((concepts::CUnaryFunctor< TFunctor, DGtal::Color, Value >))
	BOOST_STATIC_ASSERT ((ImageContainer::Domain::dimension==2)||(ImageContainer::Domain::dimension==3))

Static Public Member Functions
static ImageContainer	importPPM (const std::string &aFilename, const Functor &aFunctor=functors::ColorRGBEncoder< Value >(), bool topbotomOrder=true)

Detailed Description

template<typename TImageContainer, typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>
struct DGtal::PPMReader< TImageContainer, TFunctor >

Aim: Import a 2D or 3D using the Netpbm formats (ASCII mode).

Description of class 'PPMReader'

• PPM: RGB

  • PGM: grayscale
  • PPM3D: 3D variant of PPM
  • PGM3D: 3D variant of PGM

  Simple example: (extract from test file testPPMReader.cpp)

#include "DGtal/helpers/StdDefs.h"
#include "DGtal/io/readers/PPMReader.h"
#include "DGtal/kernel/images/ImageSelector.h"
...
string filename = "test.pgm";
typedef ImageSelector < Z2i::Domain, uint>::Type Image;
Image image = PPMReader<Image>::importPGMImage( filename ); 

You can then for instance display a threshold part of the image:

#include "DGtal/kernel/imagesSetsUtils/SetFromImage.h"  
...
Z2i::DigitalSet set2d (image.domain());
// Threshold all pixel in ]0, 255] in a DigitalSet   
SetFromImage<Z2i::DigitalSet>::append<Image>(set2d, image, 0, 255);
Board2D board;
board << image.domain() << set2d; // display domain and set   

Template Parameters

TImageContainer	the type of the image container
TFunctor	the type of the functor to transform the source image color into scalar value. This functor should follows the concept CUnaryFunctor<TFunctor, DGtal::Color, TImageContainer::Value>

Definition at line 98 of file PPMReader.h.

Member Typedef Documentation

Functor

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

typedef TFunctor DGtal::PPMReader< TImageContainer, TFunctor >::Functor

Definition at line 106 of file PPMReader.h.

ImageContainer

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

typedef TImageContainer DGtal::PPMReader< TImageContainer, TFunctor >::ImageContainer

Definition at line 103 of file PPMReader.h.

Value

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

typedef TImageContainer::Value DGtal::PPMReader< TImageContainer, TFunctor >::Value

Definition at line 105 of file PPMReader.h.

Vector

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

typedef TImageContainer::Domain::Vector DGtal::PPMReader< TImageContainer, TFunctor >::Vector

Definition at line 104 of file PPMReader.h.

Member Enumeration Documentation

MagicNumber

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

enum DGtal::PPMReader::MagicNumber

Enumerator
P1
P2
P3
P4
P5
P6

Definition at line 108 of file PPMReader.h.

{P1,P2,P3,P4,P5,P6};

Member Function Documentation

BOOST_CONCEPT_ASSERT()

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

DGtal::PPMReader< TImageContainer, TFunctor >::BOOST_CONCEPT_ASSERT

(

(concepts::CUnaryFunctor< TFunctor, DGtal::Color, Value >)

)

BOOST_STATIC_ASSERT()

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

DGtal::PPMReader< TImageContainer, TFunctor >::BOOST_STATIC_ASSERT

(

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

)

importPPM()

template<typename TImageContainer , typename TFunctor = functors::ColorRGBEncoder<typename TImageContainer::Value>>

static ImageContainer DGtal::PPMReader< TImageContainer, TFunctor >::importPPM ( const std::string &  aFilename, const Functor &  aFunctor = functors::ColorRGBEncoder< Value >(), bool  topbotomOrder = true  )

static

Main method to import a PPM (24bit, 8bits per channel) into an instance of the template parameter ImageContainer.

Parameters

aFilename	the file name to import.
aFunctor	the functor that from a given color return it associated code (by default set to BasicColorToScalarFunctors::ColorRGBEncoder).
topbotomOrder	if true, the point of coordinate (0,0) will be the bottom left corner image point (default) else the center of image coordinate will be the top left of the image (not usual).

Returns

an instance of the ImageContainer.

Referenced by DGtal::GenericReader< TContainer, 2, TValue >::importWithColorFunctor(), and DGtal::GenericReader< TContainer, 2, DGtal::uint32_t >::importWithColorFunctor().

---

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

• PPMReader.h