Merge branch '22-pyotb-1-4-1-regression' into 'develop'

FIX: change Input to pyotb_app as input of Output

Closes #22

See merge request !44

scenes/core.py

@@ -63,7 +63,7 @@ class Source(pyotb.Output):
         # Since it can only be called with pyotb apps, we do the following:
         # - if the output is a str, (e.g. the original dimap filename), we instantiate a pyotb.Input(),
         # - else we use the original output (should be pyotb application)
-        super().__init__(app=pyotb.Input(out) if isinstance(out, str) else out, output_parameter_key="out")
+        super().__init__(app=pyotb.Input(out).pyotb_app if isinstance(out, str) else out, output_parameter_key="out")
         assert parent is not self, "You cannot assign a new source to its parent instance"
         self.parent = parent  # parent source (is another Source instance)
         self._app_stack = []  # list of otb applications or output to keep trace