diff --git a/camelot/lattice.py b/camelot/lattice.py
index 44b8862..79a6cf7 100644
--- a/camelot/lattice.py
+++ b/camelot/lattice.py
@@ -255,10 +255,10 @@ class Lattice:
             areas = []
             for area in self.table_area:
                 x1, y1, x2, y2 = area.split(",")
-                x1 = int(x1)
-                y1 = int(y1)
-                x2 = int(x2)
-                y2 = int(y2)
+                x1 = float(x1)
+                y1 = float(y1)
+                x2 = float(x2)
+                y2 = float(y2)
                 x1, y1, x2, y2 = scale_to_image((x1, y1, x2, y2), factors_image)
                 areas.append((x1, y1, abs(x2 - x1), abs(y2 - y1)))
             table_bbox = find_table_joints(areas, vmask, hmask)
diff --git a/camelot/stream.py b/camelot/stream.py
index 35f40eb..bf5260e 100644
--- a/camelot/stream.py
+++ b/camelot/stream.py
@@ -319,10 +319,10 @@ class Stream:
             table_bbox = {}
             for area in self.table_area:
                 x1, y1, x2, y2 = area.split(",")
-                x1 = int(x1)
-                y1 = int(y1)
-                x2 = int(x2)
-                y2 = int(y2)
+                x1 = float(x1)
+                y1 = float(y1)
+                x2 = float(x2)
+                y2 = float(y2)
                 table_bbox[(x1, y2, x2, y1)] = None
         else:
             table_bbox = {(0, 0, width, height): None}