Add blob/watershed method to Goniometer.extract_cp

src/pyFAI/goniometer.py

@@ -672,11 +672,13 @@ def get_position(self):
         """This method  is in charge of calculating the motor position from metadata/label/..."""
         return self.pos_function(self.metadata)
 
-    def extract_cp(self, max_rings=None, pts_per_deg=1.0, Imin=0):
+    def extract_cp(self, method="massif", max_rings=None, pts_per_deg=1.0, Imin=0):
         """Performs an automatic keypoint extraction and update the geometry refinement part
 
+        :param method: method to use for keypoint extraction, default is "massif"
         :param max_ring: extract at most N rings from the image
         :param pts_per_deg: number of control points per azimuthal degree (increase for better precision)
+        :param Imin: minimum intensity for a pixel to be considered control point
         """
         if self.image is None:
             raise RuntimeError("To perform control point extraction, a data image must be provided: pyFAI.goniometer.SingleGeometry(image=...)")