{"type":"ScholarlyArticle","title":"Inferring Motion of Cylindrical Object From Shape Information","authors":[{"name":"Minoru Asada","slug":"minoru-asada","given":"Minoru","family":"Asada","affiliation":""},{"name":"Saburo Tsuji","slug":"saburo-tsuji","given":"Saburo","family":"Tsuji","affiliation":""}],"abstract":"This paper explores methods for Inferring motion · of a cylindrical · object from an Image sequence. A local shading analysis method segments • each Image Into spherical, cylindrical, and planar 'surfaces. The cylindrical surface Is characterized with a dlr:ectlon of l generating lines determined from I spatial derivatives In the Image. An extended reflectance map method • Is applicab'e to 'estimate gradients of base In consecutive frames If the .' lighting conditions are known. Another approach to lnf erring of motion Is to use shape Information which needs an additional ! constraint. If two planes of the object are not parallel, then , the finding' ofcorrespondence between frames Is easy. For the case ofparallel . planes, we Introduce · an addltior\\al assumption thatthe planes are orthogonal to the generating lines. This strong : constraint ' Is not sufficient for determhilng the surface normals from single view. The . orthogonality also gives another constraint between a change In area of the base plane and that In \\ length of generating line from the first to the second · frames. Thus Iwe can estimate orientations , of the base plane from two views. i Finally, motion parameters are estimated by correlating two shapes of the base boundary mapped :from the two views.","doi":null,"url":"https://ijcai.org/proceedings/1983/238","pdf":"https://ijcai.org/proceedings/1983/0238.pdf","markdown":"https://ijcai.org/proceedings/1983/238.md","bibtex":"https://ijcai.org/proceedings/1983/bibtex/238","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":238,"pages":{"first":1032,"last":1033},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}