This paper presents algorithms to implement the estimation of motion, focusing on the finite element method as a framework for the development of techniques. The finite element approach has the advantages of a rigorous mathematical formulation, speed of reconstruction, conceptual simplicity and ease of implementation via well-established finite element procedures in comparison to finite volume or finite difference techniques. The finite element techniques are implemented as a triangular discretisation, and preliminary results are presented. An important advantage is the capacity to tackle problems in which non-uniform sampling of the image sequence is appropriate, which will be addressed in future work.
Condell, JV., Scotney, BW., & Morrow, PJ. (2001). Estimation of Motion through Inverse Finite Element Methods with Triangular Meshes. In Computer Analysis of Images and Patterns (Vol. 2124, pp. 333-340). Springer. https://doi.org/10.1007/3-540-44692-3_41