{"type":"ScholarlyArticle","title":"Obtaining Surface Orientation from Texels under Perspective Projection","authors":[{"name":"Tu-ichi Ohta","slug":"tu-ichi-ohta","given":"Tu-ichi","family":"Ohta","affiliation":""},{"name":"Kiyoshi Maenobu","slug":"kiyoshi-maenobu","given":"Kiyoshi","family":"Maenobu","affiliation":""},{"name":"Toshiyuki Sakai","slug":"toshiyuki-sakai","given":"Toshiyuki","family":"Sakai","affiliation":""}],"abstract":"A neav method to obtoln 1u.rfQC• orielltotion of testi.U'Ol plone u.nder per1pectille projection u de1cribed. Flntt~. 1118 deri11e o 2-0 Affine tro111formotion which oppro:r:imote1 the dutortion of te:r:el potter111 u.ntler per1pectille projection. Then 111• pre1e11t o method to obtoln the llollilhinr line of the plone from the oreo of te:r:ell in the picture. It con obtoln o IIOIIilmnr point from 011 orbi.trory pctir of te:r:eu; when 11 tenu .e:r:i1t, 11 C2 \"\"'\"\"\"'\"' pointl con be obtoined. An olrorithm to 1ollle the 2-D Affine motri:r: between two potter111 u ctUo pre1ented. It reinforce• the method to be oppUcoble to o testu.re which i1 co111titu.ted from more thon two kintl1 of tent potter111. E:sperimentl ore performed ~ &Ulnll ortificioU-y renerctted testu.re1.","doi":null,"url":"https://ijcai.org/proceedings/1981/143","pdf":"https://ijcai.org/proceedings/1981/0143.pdf","markdown":"https://ijcai.org/proceedings/1981/143.md","bibtex":"https://ijcai.org/proceedings/1981/bibtex/143","volume":{"slug":"1981","title":"Proceedings of the Seventh International Joint Conference on Artificial Intelligence","short_title":"IJCAI 1981","url":"https://ijcai.org/proceedings/1981/","year":1981,"location":"Vancouver, British Columbia, Canada","dates":"24-28 August 1981","editors":"Roger C. Schank","isbn":"","publisher":"International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":"Vision: Low-level","track":"Vision: Low-level","number":143,"pages":{"first":746,"last":750},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}