XYZ2RGBFunctor< T > Class Template Reference

Convert standardized tri-stimulus XYZ into linear (raw) RGB. More...

#include <vigra/colorconversions.hxx>

Public Types
typedef TinyVector< T, 3 >	argument_type

typedef TinyVector< T, 3 >	result_type

typedef TinyVector< T, 3 >	value_type

Public Member Functions
template<class V >
result_type	operator() (V const &xyz) const

	XYZ2RGBFunctor ()

	XYZ2RGBFunctor (component_type max)

Detailed Description

template<class T>
class vigra::XYZ2RGBFunctor< T >

Convert standardized tri-stimulus XYZ into linear (raw) RGB.

#include <vigra/colorconversions.hxx>
Namespace: vigra

According to ITU-R Recommendation BT.709, the functor realizes the transformation

$\begin{array}{rcl} R & = & R_{max} (3.2404813432\enspace X - 1.5371515163\enspace Y - 0.4985363262\enspace Z) \\ G & = & G_{max} (-0.9692549500\enspace X + 1.8759900015\enspace Y + 0.0415559266\enspace Z) \\ B & = & B_{max} (0.0556466391\enspace X - 0.2040413384\enspace Y + 1.0573110696\enspace Z) \end{array}$

By default, $R_{max} = G_{max} = B_{max} = 255$ . This default can be overridden in the constructor. This is the inverse transform of vigra::RGB2XYZFunctor.