title: Camera-sampling field and its applications.
abstract: In this paper, we propose a novel vector field, called a camera-sampling field, to represent the sampling density distribution of a pinhole camera. We give the derivation and discuss some essential properties of the camera-sampling field, including flux, divergence, curl, gradient, level surface, and sampling patterns. This vector field reveals camera-sampling concisely and facilitates camera sampling analysis. The usage for this vector field in several computer graphics applications is introduced, such as determining the splat kernel for image-based rendering, texture filtering, mipmap level selection, level transition criteria for LOD, and LDI-construction.
authors.affiliation: Computer Graphics Group/Visual System Laboratory, Department of Computer Science and Information Engineering, National Cheng-Kung University, No. 1 Ta-Hsueh Road, Tainen 701, Taiwan, ROC. phlin@vision.csie.ncku.edu.tw
authors.forename: Ping-Hsien
authors.initials: PH
authors.lastname: Lin
authors.forename: Tong-Yee
authors.initials: TY
authors.lastname: Lee
mesh_terms: D000465:Algorithms; D003196:Computer Graphics; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D010781:Photography / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity