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|   | RGB2LabFunctor [Color Space Conversions] |  | 
Convert linear (raw) RGB into perceptual uniform CIE L*a*b*. More...
#include <vigra/colorconversions.hxx>
| Public Types | |
| typedef TinyVector< T, 3 > | argument_type | 
| typedef NumericTraits< T > ::RealPromote | component_type | 
| typedef XYZ2LabFunctor < component_type > ::result_type | result_type | 
| typedef XYZ2LabFunctor < component_type > ::result_type | value_type | 
| Public Member Functions | |
| template<class V> | |
| result_type | operator() (V const &rgb) const | 
| RGB2LabFunctor (component_type max) | |
| RGB2LabFunctor () | |
#include <vigra/colorconversions.hxx>
 Namespace: vigra
The functor realizes the transformation
![\[ RGB \Rightarrow XYZ \Rightarrow L^*a^*b^* \]](form_25.png) 
See vigra::RGB2XYZFunctor and vigra::XYZ2LabFunctor for a description of the two steps. The resulting color components will have the following bounds:
![\[ \begin{array}{rcl} 0 \leq & L^* & \leq 100 \\ -86.1813 \leq & u^* & \leq 98.2352 \\ -107.862 \leq & v^* & \leq 94.4758 \end{array} \]](form_26.png) 
Traits defined:
FunctorTraits::isUnaryFunctor is true (VigraTrueType) 
| typedef TinyVector<T, 3> argument_type | 
the functor's argument type
| typedef NumericTraits<T>::RealPromote component_type | 
the result's component type
| typedef XYZ2LabFunctor<component_type>::result_type result_type | 
the functor's result type
| typedef XYZ2LabFunctor<component_type>::result_type value_type | 
| RGB2LabFunctor | ( | ) | 
default constructor. The maximum value for each RGB component defaults to 255.
| RGB2LabFunctor | ( | component_type | max | ) | 
constructor
| result_type operator() | ( | V const & | rgb | ) | const | 
apply the transformation
| 
© Ullrich Köthe     (ullrich.koethe@iwr.uni-heidelberg.de)  | 
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