Richard Szeliski

Szeliski, R., & Coughlan, J. (1994). Hierarchical spline-based image registration. Computer Vision and Pattern Recognition, 1994. Proceedings CVPR'94., 1994 IEEE Computer Society Conference on, 194–201. IEEE.
Szeliski, R., & Coughlan, J. (1997). Spline-based image registration. International Journal Of Computer Vision, 22, 199–218.