Image-Based Rendering - The Magic of Computer Graphics - page 142

Figure 5.15 Multiview video camera capture for Arthur and the Minimoys .(c 2006 EuropaCorp and

BUF Company.) (See Color Plate VII.)

posed different ideas for improving the accuracy and efficiency of video motion
capture [Vlasic et al. 08, de Aguiar et al. 08, Bradley et al. 08].

5.4 The Light Field

Two papers presented at SIGGRAPH 1996 introduced a new approach to image-
based rendering: “The Lumigraph” [Gortler et al. 96] authored by Steven J.
Gortler, Radek Grzeszczuk, Richard Szeliski, and Michael F. Cohen, and “Light
Field Rendering” by Marc Levoy and Pat Hanrahan [Levoy and Hanrahan 96].
Before these papers were published, IBR techniques used a collection of 2D im-
ages to store the acquired photographic images. Renderings from an arbitrary
viewpoint were constructed through interpolation or warping of these images.
Both the 1996 papers introduced essentially the same idea: to convert the ac-
quired images to a radiance function of position and direction in an environment,
i.e., to construct the plenoptic function. In the absence of participating media,
this reduces to a 4D function on lines in space. Gortler and his coauthors call this