--- a
+++ b/src/mergeChannels.h
@@ -0,0 +1,28 @@
+#include <nanobind/nanobind.h>
+#include <nanobind/stl/vector.h>
+#include <nanobind/stl/string.h>
+#include <nanobind/stl/tuple.h>
+#include <nanobind/ndarray.h>
+
+#include <exception>
+#include <vector>
+#include <string>
+
+#include "itkImage.h"
+#include "itkVectorImage.h"
+#include "itkImageRegionIteratorWithIndex.h"
+
+#include "antsImage.h"
+
+
+template< class VectorImageType, class ImageType>
+std::vector<AntsImage<ImageType>> splitChannels( AntsImage<VectorImageType> & antsimage );
+
+template< class ImageType, class VectorImageType >
+AntsImage<VectorImageType> mergeChannels( std::vector<AntsImage<ImageType>> imageList );
+
+template< class ImageType, class VectorImageType >
+typename VectorImageType::Pointer mergeChannels2( std::vector<AntsImage<ImageType>> imageList );
+
+template< class ImageType, class VectorImageType >
+typename VectorImageType::Pointer mergeChannels3( std::vector<AntsImage<ImageType>> imageList );
\ No newline at end of file