Polygon-convex beta 01 known issues:
1. Keep camera on landscape mode for all photos..
2. Make sure the scale value entered is greater than 100. For instance, if the average size of each object is 10 inches and the size of the scaling object is 12 inches then enter 120.
3. Remove any excess lines before saving each object. All lines surrounding an object should form part of the object's outline.
4. Close the app after each use so it doesn't drain your phone battery.