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RGBGradientMagnitudeFunctor< ValueType > Class Template Reference |  |
#include <vigra/combineimages.hxx>
Public Types | |
| typedef RGBValue< ValueType > | first_argument_type |
| typedef NumericTraits < ValueType >::RealPromote | result_type |
| typedef RGBValue< ValueType > | second_argument_type |
| typedef ValueType | value_type |
Public Member Functions | |
| result_type | operator() (first_argument_type const &gx, second_argument_type const &gy) const |
Detailed Description
template<class ValueType>
class vigra::RGBGradientMagnitudeFunctor< ValueType >
Calculate the gradient magnitude from RGB arguments. Can be used in conjunction with gradientBasedTransform().
Traits defined:
FunctorTraits::isBinaryFunctor are true (VigraTrueType)
Member Typedef Documentation
| typedef RGBValue<ValueType> first_argument_type |
the functor's first argument type
| typedef RGBValue<ValueType> second_argument_type |
the functor's second argument type
| typedef NumericTraits<ValueType>::RealPromote result_type |
the functor's result type
| typedef ValueType value_type |
- Deprecated:
- use first_argument_type, second_argument_type, result_type
Member Function Documentation
| result_type operator() | ( | first_argument_type const & | gx, |
| second_argument_type const & | gy | ||
| ) | const |
Calculate the gradient magnitude form given RGB components. The function returns
![\[ \sqrt{|\nabla red|^2 + |\nabla green|^2 + |\nabla blue|^2} \]](form_42.png)
where 
is defined by gx.red()*gx.red() + gy.red()*gy.red().
ValueType (the RGB's component type) must support addition, multiplication, abd sqrt().
The documentation for this class was generated from the following file:
- vigra/combineimages.hxx