allow non-integer calibration distances and be more lenient when pars…

…ing calibration distances from filenames

utils.py

@@ -6,6 +6,7 @@
 import argparse
 import enum
 import urllib.request
+import re
 import cv2
 import numpy as np
 from sklearn import linear_model
@@ -61,7 +62,7 @@ def get_calibration_frame_dist(transect_dir, calibration_frame_id):
     """Try to get metric depth belonging to a calibration frames using multiple methods"""
     # first try wether the filename itself represents the distance in meters
     try:
-        return int(calibration_frame_id)
+        return float(re.sub(r"[a-zA-Z]", "", calibration_frame_id))
     except:
         pass