fix hil contract

@@ -8,6 +8,26 @@
 import re
 import numpy as np
 from fuzzywuzzy import fuzz
+from shapely.geometry import Polygon
+
+
+def caculate_iou(g, p):
+    g = Polygon(np.array(g).reshape((-1, 2)))
+    p = Polygon(np.array(p).reshape((-1, 2)))
+    inter = Polygon(g).intersection(Polygon(p)).area
+    union = g.area + p.area - inter
+    return inter/union
+
+
+def get_table_info(bbox_1, bbox_2, ocr_result):
+    anchor = [bbox_2[0], bbox_1[1], bbox_2[2], bbox_1[3],
+            bbox_2[4], bbox_1[5], bbox_2[6], bbox_1[7]]
+    table_info = ''
+    for span in ocr_result:
+        iou = caculate_iou(anchor, span[0])
+        if iou > 0:
+            table_info = span[1]
+    return table_info
 
 
 class Finder: