Views Compositing And Motion Control In Computer Animation

Compositing computer animation with field shooting images (briefly called "Views compositing" ) and motion control methods are all recent focuses in computer animation. Based on comprehensive documents citation, engineering practice, theoretical analysis, and experiments, a feasible analysis and some technologies in views compositing, some motion control methods suitable to describe random process, and a new spline curve suitable to describe contour lines in engineering CAD are discussed in this thesis.The main contributions include:● A method of views compositing based on P3P problem is given, and some key technologies are discussed in details, such as camera calibration, methods to compute passpoint center accurately.● Multi-solution phenomenon of P3P problem is discussed in details. Camera Calibration methods based on P3P Problem were not widely used because of multi-solutions phenomenon. A new form, classification, and simplification of P3P Problem, the theorem of polynomial sign-changing number are used to evaluate the positive solution number of P3P Problem; the necessary and sufficient conditions of all cases of multi-solutions, the distribution of the multi-solutions are given; all these comprised the basic and necessary theorem for the Views Compositing provided in this thesis.● Wu's Method is applied to deal with polynomial equations system derived from Perspective-n-Point(PnP) Problem. The whole solutions of P3P Problem is gained in a mechanized manner, without more or less. It's adaptable to gain intuitive geometric explanation for special camera position, constraints conditions, and the solution existence conditions; A new solution to P4P problem is also given.● Kinematics methods and dynamics methods are applied as motion control methods in simulating flowing water and waves. The...