diff --git a/src/lipase/imagej/ijimageengine.py b/src/lipase/imagej/ijimageengine.py
index 7dfc52e..b3eb63b 100644
--- a/src/lipase/imagej/ijimageengine.py
+++ b/src/lipase/imagej/ijimageengine.py
@@ -30,6 +30,19 @@ PIXEL_TYPE_TO_CV_PIXEL_TYPE = {
     PixelType.F32: opencv_core.CV_32F,
 }
 
+def clone_processor(src_processor, clone_pixel_type):
+    """
+    :param Processor processor:
+    :param PixelType clone_pixel_type:
+    :rtype Processor:
+    """
+    clone_processor = { 
+        PixelType.U8: src_processor.convertToByteProcessor(),
+        PixelType.U16: src_processor.convertToShortProcessor(),
+        PixelType.F32: src_processor.convertToFloatProcessor(),
+         }[clone_pixel_type]
+    return clone_processor
+
 class IJImage(IImage):
 
     def __init__(self, image_engine, ij_image=None, width=None, height=None, pixel_type=None):
@@ -50,17 +63,13 @@ class IJImage(IImage):
             stack_name = ''
             self.ij_image = IJ.createHyperStack(stack_name, width, height, 1, 1, 1, PixelType.get_num_bits(pixel_type))
 
+
     def clone(self, clone_pixel_type=None):
         if clone_pixel_type == None:
             clone_pixel_type = self.get_pixel_type()
         copy = IJImage(self.image_engine, width=self.get_width(), height=self.get_height(), pixel_type=clone_pixel_type)
         src_processor = self.ij_image.getProcessor()
-        clone_processor = { 
-            PixelType.U8: src_processor.convertToByteProcessor(),
-            PixelType.U16: src_processor.convertToShortProcessor(),
-            PixelType.F32: src_processor.convertToFloatProcessor(),
-             }[clone_pixel_type]
-        copy.ij_image.setProcessor( clone_processor )
+        copy.ij_image.setProcessor( clone_processor(src_processor, clone_pixel_type) )
         assert copy.get_pixel_type() == clone_pixel_type
         return copy
 
@@ -129,7 +138,7 @@ class IJHyperStack(IHyperStack):
         self.hyperstack.setPositionWithoutUpdate(channel_index + 1, slice_index + 1, frame_index + 1)
         stack_name = '' 
         image_plus = IJ.createHyperStack(stack_name, self.get_width(), self.get_height(), 1, 1, 1, PixelType.get_num_bits(self.get_pixel_type()))
-        image_plus.setProcessor(self.hyperstack.getProcessor())
+        image_plus.setProcessor(clone_processor(self.hyperstack.getProcessor(), self.get_pixel_type()))
         ij_image = IJImage(self.image_engine, image_plus)
         return ij_image