fix minor bugs

Author: QiuJueqin

modules/helpers.py

@@ -157,8 +157,8 @@ def bilateral_filter(array, spatial_weights, intensity_weights_lut, right_shift=
     padded_array = pad(array, pads=(filter_height // 2, filter_width // 2))
     shifted_arrays = shift_array(padded_array, window_size=(filter_height, filter_width))
 
-    bf_array = np.empty_like(array)
-    weights = np.empty_like(array)
+    bf_array = np.zeros_like(array)
+    weights = np.zeros_like(array)
 
     for i, shifted_array in enumerate(shifted_arrays):
         intensity_diff = (shifted_array - array) ** 2

pipeline.py

@@ -23,7 +23,7 @@ class Pipeline:
 
     def __init__(self, cfg):
         """
-        :param cfg: Config object, camera configuration
+        :param cfg: yacs.Config object, configurations about camera specs and module parameters
         """
         self.cfg = cfg