Lifted assertions on z-stack and monochromicity

extensions/chaeo/products.py

@@ -99,8 +99,6 @@ def export_patches_from_zstack(
         focus_metric: str = None,
         **kwargs
 ):
-    # assert stack.chroma == 1, 'Expecting monochromatic image data'
-    assert stack.nz > 1, 'Expecting z-stack'
 
     exported = []
     for mi in zmask_meta:

extensions/chaeo/zmask.py

@@ -39,7 +39,6 @@ def build_zmask_from_object_mask(
 
     # validate inputs
     assert zstack.chroma == 1
-    assert zstack.nz > 1
     assert mask_type in ('contours', 'boxes'), mask_type
     assert obmask.is_mask()
     assert obmask.chroma == 1