Create utils.py

Backend/dist_cal/utils.py

+#
+# MIT License
+#
+# Copyright (c) 2018 Matteo Poggi m.poggi@unibo.it
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import numpy as np
+from matplotlib import cm
+import cv2
+
+# Colormap wrapper
+def applyColorMap(img, cmap):
+  colormap = cm.get_cmap(cmap) 
+  colored = colormap(img)
+  return np.float32(cv2.cvtColor(np.uint8(colored*255),cv2.COLOR_RGBA2BGR))/255.
+
+# 2D convolution wrapper
+def count_text_lines(file_path):
+  f = open(file_path, 'r')
+  lines = f.readlines()
+  f.close()
+  return len(lines)