concept PixelDereferenceAdaptorConcept<boost::UnaryFunctionConcept D>
: DefaultConstructibleConcept<D>, CopyConstructibleConcept<D>, AssignableConcept<D> {
typename const_t; where PixelDereferenceAdaptorConcept<const_t>;
typename value_type; where PixelValueConcept<value_type>;
typename reference;
typename const_reference;
static const bool D::is_mutable;
where Convertible<value_type,result_type>;
};