pyle@lll-lcc.UUCP (03/08/87)
I recently implemented a ray tracer with antialiasing. I used the method specified by Whitted (adaptive subdivision). The technique works very well, but I still get some jagged edges on curved surfaces and polygons, no matter how deep the subdivision goes. I talked to a Ph.D candidate, and he thought it might be the RGB color space I was using. He said that in RGB space, colors did not average right. I have seen several pictures generated by adaptive subdivision in the journals, and they look just great. Is the simple filter of averaging the four corners of a pixel square inadaquate? Is distributed ray tracing the way to ultimately antialianize an image? If it helps, I'm generating my pictures on a Raster Technologies box, Model/80, 512 X 512. If possible, please respond via E-Mail. Thanks, Ernie Pyle