{"type":"ScholarlyArticle","title":"Constraints for the Estimation of Displacement Vector Fields From Image Sequences","authors":[{"name":"Hans-Hellmut Nagel","slug":"hans-hellmut-nagel","given":"Hans-Hellmut","family":"Nagel","affiliation":""}],"abstract":"Smoothness constraints have been used to facilitate the estimation of displacement vector fields. Differing from HORN and SCHUNCK 81 who employ a general smoothness requirement, this contribution reports an analysis of an \"oriented smoothness\" requirement: a change in the displacement vector field is only constrained in the direction perpendicular to the characteristic gray value variation based on which the displacement vector is estimated. An iterative solution for the resulting system of nonlinear partial differential equations is developed. It is shown how this system of equations relates to the one derived by HORN and SCHUNCK 81.","doi":null,"url":"https://ijcai.org/proceedings/1983/223","pdf":"https://ijcai.org/proceedings/1983/0223.pdf","markdown":"https://ijcai.org/proceedings/1983/223.md","bibtex":"https://ijcai.org/proceedings/1983/bibtex/223","volume":{"slug":"1983","title":"Proceedings of the Eighth International Joint Conference on Artificial Intelligence","short_title":"IJCAI 1983","url":"https://ijcai.org/proceedings/1983/","year":1983,"location":"Karlsruhe, West Germany","dates":"","editors":"Alan Bundy","isbn":"","publisher":"International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":"Vision","track":"Vision","number":223,"pages":{"first":945,"last":950},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}