Method of measuring the parameter of object's orientation using optical flow

In this paper, we propose a method of measuring the orientation of observed objects as a parametric model. The orientation is represented as angle of observed objects. We suppose that optical flow obtained from image have component of not only component of translational velocity but also revolution, scaling, and orientation. To estimate these components, it is necessary to construct nonlinear simultaneous equations from optical flow measured at some observed points on the observed object. We sought to solve this nonlinear simultaneous equations by using Newton method. Components of orientation are obtained by solving nonlinear simultaneous equations.