C pointer to a pixel
[Models]
Detailed Description
Iterators over interleaved pixels. A C pointer to a model of 
PixelValueConcept is used as an iterator over interleaved pixels. Models 
PixelIteratorConcept, 
HomogeneousPixelBasedConcept, 
HasDynamicXStepTypeConcept, 
MemoryBasedIteratorConcept.