Update app.py

app.py

@@ -392,7 +392,7 @@ def add_rectangular_boundary(doc, polygons_inch, boundary_length, boundary_width
 
     # Check if boundary exceeds image limits (1 inch less than image dimensions)
     if image_height_in is not None and image_width_in is not None:
-        if boundary_length_in > (image_height_in - 1) or boundary_width_in > (image_width_in - 1):
+        if boundary_length_in > (image_height_in - 2) or boundary_width_in > (image_width_in - 2):
             raise BoundaryExceedsError("Error: The specified boundary dimensions exceed the allowed image dimensions. Please enter smaller values.")
 
     # Calculate center of inner contours