Image Adaptors
[Data Processing Objects]

Classes
class	itk::Accessor::AbsPixelAccessor< TInternalType, TExternalType >
	Give access to the abs() function of a value. More...
class	itk::AbsImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the abs() of its pixels. More...
class	itk::Accessor::AcosPixelAccessor< TInternalType, TExternalType >
	Give access to the acos() function of a value. More...
class	itk::AcosImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the acos() of its pixels. More...
class	itk::AddImageAdaptor< TImage >
	Presents an image as being composed of the log() of its pixels. More...
class	itk::Accessor::AddPixelAccessor< TPixel >
	Simulates the effect of adding a constant value to all pixels. More...
class	itk::Accessor::AsinPixelAccessor< TInternalType, TExternalType >
	Give access to the asin() function of a value. More...
class	itk::AsinImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the asin() of its pixels. More...
class	itk::Accessor::AtanPixelAccessor< TInternalType, TExternalType >
	Give access to the atan() function of a value. More...
class	itk::AtanImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the atan() of its pixels. More...
class	itk::BluePixelAccessor< T >
	Give access to the Blue component of a RGBPixel type. More...
class	itk::Accessor::CosPixelAccessor< TInternalType, TExternalType >
	Give access to the cos() function of a value. More...
class	itk::CosImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the cos() of its pixels. More...
class	itk::DefaultPixelAccessor< TType >
	Give access to partial aspects a type. More...
class	itk::Accessor::ExpPixelAccessor< TInternalType, TExternalType >
	Give access to the exp() function of a value. More...
class	itk::ExpImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the exp() of its pixels. More...
class	itk::Accessor::ExpNegativePixelAccessor< TInternalType, TExternalType >
	Give access to the exp() function of a value. More...
class	itk::ExpNegativeImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the exp() of its pixels. More...
class	itk::GreenPixelAccessor< T >
	Give access to the Green component of a RGBPixel type. More...
class	itk::ImageAdaptor< TImage, TAccessor >
	Give access to partial aspects of voxels from an Image. More...
class	itk::Accessor::Log10PixelAccessor< TInternalType, TExternalType >
	Give access to the log10() function of a value. More...
class	itk::Log10ImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the log10() of its pixels. More...
class	itk::Accessor::LogPixelAccessor< TInternalType, TExternalType >
	Give access to the log() function of a value. More...
class	itk::LogImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the log() of its pixels. More...
class	itk::NthElementImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the N-th element of its pixels. More...
class	itk::NthElementPixelAccessor< T, TContainer >
	Give access to the N-th of a Container type. More...
class	itk::PixelAccessor< TInternalType, TExternalType >
	Give access to partial aspects of a type. More...
class	itk::RedPixelAccessor< T >
	Give access to the red component of a RGBPixel type. More...
class	itk::RGBToVectorImageAdaptor< TImage >
	Presents an image of pixel type RGBPixel as being and image of Vectors. More...
class	itk::Accessor::RGBToVectorPixelAccessor< T >
	Give access to a RGBPixel as if it were a Vector type. More...
class	itk::Accessor::SinPixelAccessor< TInternalType, TExternalType >
	Give access to the sin() function of a value. More...
class	itk::SinImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the sin() of its pixels. More...
class	itk::Accessor::SqrtPixelAccessor< TInternalType, TExternalType >
	Give access to the sqrt() function of a value. More...
class	itk::SqrtImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the sqrt() of its pixels. More...
class	itk::Accessor::TanPixelAccessor< TInternalType, TExternalType >
	Give access to the tan() function of a value. More...
class	itk::TanImageAdaptor< TImage, TOutputPixelType >
	Presents an image as being composed of the tan() of its pixels. More...
class	itk::VectorToRGBImageAdaptor< TImage >
	Presents an image of pixel type Vector as being and image of RGBPixel type. More...
class	itk::Accessor::VectorToRGBPixelAccessor< T >
	Give access to a Vector pixel type as if it were a RGBPixel type. More...

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Detailed Description

Image Adaptors are an implementation of the Adaptor Design Pattern. They are designed to present an image of a particular type as being an image of a different type. Adaptors perform simple operations on pixel values for which is not easy to justify the use of an image filter.

One of the principal tasks of ImageAdaptors is to perform casting.

For example: you have an image whose pixels are of type unsigned char and you need to feed this image in a process that expects pixels of type double. You have the option of using and ImageFilter (see ImageFiltersPage) that convert the input unsigned char image into another of pixel type double. However this filter will allocate memory for this second image and will need to be executed. Image Adaptors allow to simulate that you have made the conversion but will avoid the overhead in memory. There is however a penalty in performance.

The mechanism used by image adaptors is to provide a simple function that will be used by ImageIterator (see Image Iterators) to convert the value of a pixel, in a pixel-by-pixel basis.

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