A PANORAMIC VIRTUAL SCREEN FOR RAY TRACING
Musgrave F. Kenton, Yale University, New Haven, Connecticut
Publisher Summary
The standard imaging model used in ray tracing is that of a pinhole camera with a flat virtual screen. That model can be supplemented with a cylindrical virtual screen to obtain a 360°, or greater, lateral field of view. By using appropriate angular distribution of samples on the vertical axis, a 180° vertical field of view can be obtained as well. This chapter describes a scheme for sampling a virtual screen in such a way that the entire celestial sphere can be mapped onto a rectilinear image plane, with acceptable distortion. It discusses the construction of a panoramic virtual screen for ray tracing. That projection ...
Get Graphics Gems III (IBM Version) now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
