# Import necessary libraries
import os
import json
import string
import pandas as pd
import turicreate as tc

# Enable the ability to view images in a cell
%matplotlib inline

# Helper function that will build our bounding boxes in a way that TuriCreate can work with
def build_annotations(_tuple):
  label = _tuple[0];
  x_min = _tuple[1][0]; # left x
  x_max = _tuple[1][2]; # right x
  y_min = _tuple[1][1]; # top y
  y_max = _tuple[1][3]; # bottom y

  ret = {"coordinates":
         {
             "x" : (x_min + x_max)/2,
             "y" : (y_min + y_max)/2,
             "width": x_max - x_min,
             "height": y_max - y_min
         },
         "label": label
        }
  return ret