Patent ID: 7062082
Filing Date: 2006-06-13
Classification: G06T

Abstract:
1. A method of measuring a three-dimensional posture of a sphere, comprising the steps of: photographing a sphere having a plurality of marks given to a surface thereof to obtain a two-dimensional image of said sphere; preparing an imaginary sphere having a plurality of marks given to a surface thereof in a three-dimensional coordinate space on a computer; setting an arbitrary posture of said imaginary sphere as a reference posture and setting an arbitrary direction to view an imaginary sphere as a viewing direction; said computer working to displace said posture of said imaginary sphere in such a way that said marks given to said imaginary sphere are coincident with said marks on said surface of said two-dimensional image of said sphere; and specifying a three-dimensional posture of said sphere on the basis of a displacement amount of said posture of said imaginary sphere relative to said reference posture.