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Camera-sampling field and its applications

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2 Author(s)
Ping-Hsien Lin ; Dept. of Comput. Sci. & Inf. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Tong-Yee Lee

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.

Published in:

Visualization and Computer Graphics, IEEE Transactions on  (Volume:10 ,  Issue: 3 )

Date of Publication:

May-June 2004

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