Show simple item record

dc.contributor.convenorRoberto Cipolla, Roberto Colombo, Alberto Del Bimboen_US
dc.contributor.authorZhang, Paulen_US
dc.contributor.authorGao, Yongshengen_US
dc.contributor.authorCaelli, Terrenceen_US
dc.contributor.editorAndrew Fitzgibbon, Svetlana Lazebnik, Pietro Perona, Yoichi Sato, et alen_US
dc.description.abstractThe appearance of a 3D object depends on both the viewing directions and illumination conditions. It is proven that all n-pixel images of a convex object with Lambertian surface under variable lighting from infinity form a convex polyhedral cone (called illumination cone) in n-dimensional space. This paper tries to answer the other half of the question: What is the set of images of an object under all viewing directions? A novel image representation is proposed, which transforms any n-pixel image of a 3D object to a vector in a 2n-dimensional pose space. In such a pose space, we prove that the transformed images of a 3D object under all viewing directions form a parametric manifold in a 6-dimensional linear subspace. With in-depth rotations along a single axis in particular, this manifold is an ellipse. Furthermore, we show that this parametric pose manifold of a convex object can be estimated from a few images in different poses and used to predict object's appearances under unseen viewing directions. These results immediately suggest a number of approaches to object recognition, scene detection, and 3D modelling. Experiments on both synthetic data and real images were reported, which demonstrates the validity of the proposed representation.en_US
dc.relation.ispartofconferencename12th European Conference on Computer Vision (ECCV)en_US
dc.relation.ispartofconferencetitleComputer Vision – ECCV 2012. 12th European Conference on Computer Vision, Florence, Italy, October 7-13, 2012, Proceedings, Part Ven_US
dc.relation.ispartoflocationFlorence, Italyen_US
dc.subject.fieldofresearchComputer Visionen_US
dc.titleParametric Manifold of an Object under Different Viewing Directionsen_US
dc.typeConference outputen_US
dc.type.descriptionE1 - Conference Publications (HERDC)en_US
dc.type.codeE - Conference Publicationsen_US
gro.facultyGriffith Sciences, Griffith School of Engineeringen_US
gro.hasfulltextNo Full Text
gro.griffith.authorZhang, Paul
gro.griffith.authorGao, Yongsheng
gro.griffith.authorCaelli, Terrence M.

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

  • Conference outputs
    Contains papers delivered by Griffith authors at national and international conferences.

Show simple item record