Update cg.py

Author: weiliao001211

UFWI/optimization/algorithm/cg.py

@@ -65,7 +65,7 @@
 import numpy as np
 
 from UFWI.data.image_data import ImageData
-from functions.ringingRemovalFilt import ringingRemovalFilt
+from UFWI.optimization.operator.functions.ringingRemovalFilt import ringingRemovalFilt
 from ..operator.helmholtz import HelmholtzOperator
 from ..function.least_squares import NonlinearLS
 from .base import Optimizer
@@ -265,4 +265,4 @@ def reset(self):
         self._d = self._g_prev = None
         self._vis_grad = self._vis_search = None
         for v in self._rec.values():
-            v.clear()
+            v.clear()