update init parameters

horizonmetrics.py

@@ -64,14 +64,15 @@ class horizonmetrics(evaluate.Metric):
     """TODO: Short description of my evaluation module."""
 
     def __init__(self,
-                 slope_threshold=0.1,
-                 midpoint_threshold=0.1,
+                 roll_threshold=0.5,
+                 pitch_threshold=0.1,
                  vertical_fov_degrees=25.6,
                  **kwargs):
         super().__init__(**kwargs)
-        self.slope_threshold = slope_threshold
-        self.midpoint_threshold = midpoint_threshold
-        self.vertical_fov_degrees = vertical_fov_degrees
+
+        self.slope_threshold = roll_to_slope(roll_threshold)
+        self.midpoint_threshold = pitch_to_midpoint(pitch_threshold,
+                                                    vertical_fov_degrees)
         self.predictions = None
         self.ground_truth_det = None
         self.slope_error_list = None