{"type":"ScholarlyArticle","title":"Processes at Discontinuities","authors":[{"name":"Patrick J. Hayes","slug":"patrick-j-hayes","given":"Patrick J.","family":"Hayes","affiliation":""},{"name":"Michael Leyton","slug":"michael-leyton","given":"Michael","family":"Leyton","affiliation":""}],"abstract":"Leyton [1988] developed a set of rules by which process-history can be recovered from smooth natural shapes such as outlines of tumors, clouds, or islands. In this paper, we extend this analysis to deal with shapes with first-order discontinuities such as corners, creases and cusps. A simple extension to the notation allows one extra rule to cover most of these phenomena.","doi":null,"url":"https://ijcai.org/proceedings/1989/203","pdf":"https://ijcai.org/proceedings/1989/0203.pdf","markdown":"https://ijcai.org/proceedings/1989/203.md","bibtex":"https://ijcai.org/proceedings/1989/bibtex/203","volume":{"slug":"1989","title":"Proceedings of the Eleventh International Joint Conference on Artificial Intelligence","short_title":"IJCAI 1989","url":"https://ijcai.org/proceedings/1989/","year":1989,"location":"Detroit, Michigan, USA","dates":"August 20-25 1989","editors":"N. S. Sridharan","isbn":"","publisher":"International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":"Knowledge Representation","track":"Knowledge Representation","number":203,"pages":{"first":1267,"last":1271},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}