WIT Press


A Distortion Camera For Ray Tracing

Price

Free (open access)

Paper DOI

10.2495/VID930081

Volume

5

Pages

14

Published

1993

Size

2,498 kb

Author(s)

P. Acquisto & E. Groller

Abstract

A distortion camera for ray tracing P. Acquisto, E. Groller Institute for Computer Graphics, Technical University Vienna, Karlsplatz 13/186/2, A-1040 Vienna, Austria ABSTRACT Ray tracing is a powerful technique for realistic image generation. Typically a simple camera definition is used, whereby a 3D environment is mapped onto an image plane either by an orthographic or perspective projection. The concept of the usual simple camera definition is extended in several ways to achieve distorted views or projections of the object scene. The origins of primary rays are not required to lie on a plane anymore. Thus projections onto curved image surfaces are possible. The directions of primary rays may be chosen according to various nonlinear functions that allow nonstandard projections of the environment. The concept of centers of interest (coins)is introduced which enables to concentrate on especially interesting portions of object space. A center of interest is a 3D positio

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