1. A method for automatically finding a minimum area rectangle to inscribe an object, comprising: constructing a convex hull from perimeter points located on a boundary of the object, wherein each side of the convex hull is a line segment between two of the perimeter points; constructing an inscribing rectangle at each of side of the convex hull; and calculating an area of each inscribing rectangle to find an inscribing rectangle having a minimum area to obtain the minimum area rectangle.