Creating Raster Omnimax Images from Multiple Perspective Views Using the Elliptical Weighted Average Filter
Issue No. 06 - June (1986 vol. 6)
Ned Greene , New York Institute of Technology
Paul Heckbert , New York Institute of Technology
Creation of Omnimax animation by computer opens up fantastic new visual possibilities. Unfortunately, the fish-eye distortion of Omnimax film images complicates synthesis by computer, since most image-synthesis programs can create only perspective views. As an alternative to modifying existing image-synthesis programs to produce Omnimax projections directly, we present a method for creating them from multiple perspective views. Four perspective views of the environment are created, each a projection onto a face of a cube centered at the camera, and then a mapping program creates an Omnimax projection from them. To minimize aliasing during resampling, the mapping program uses the elliptical weighted average filter, a space-variant filter we developed for this application that computes a weighted average over an arbitrarily oriented elliptical area. This filter can also be used for texture mapping 3D surfaces.
N. Greene and P. Heckbert, "Creating Raster Omnimax Images from Multiple Perspective Views Using the Elliptical Weighted Average Filter," in IEEE Computer Graphics and Applications, vol. 6, no. , pp. 21-27, 1986.