Aliasing

Aliasing is a fundamental problem in computer graphics and computer imaging. The human eye has a resolution that demands on the order of 8000x8000 pixels to produce an image which is imperceptibly different from a perfect reconstruction. Because any pixel based display has a finite resolution, and the displays commonly used have a lower resolution than the human eye, aliasing occurs in high frequency image data. This is most noticible

Note: The dithering in the images is a result of the color reduction from 24-bit color to 256 colors to make the images accessable on the world wide web. Actual results do to display this artifact.


Super Sampling:

1 Ray/Pixel
4 Rays/Pixel
9 Rays/Pixel
16 Rays/Pixel
25 Rays/Pixel


Low Pass Filtering:

 [ f / 8   f / 8   f / 8 ]
 [ f / 8   1 - f   f / 8 ]
 [ f / 8   f / 8   f / 8 ]
Filter 0%
Filter 30%
Filter 50%
Filter 70%
Filter 100%


© 1996, Morgan McGuire
Laser 2.0 Raytracer © 1996, Morgan McGuire ([email protected]) and Laura Wollstadt ([email protected]).
All rights reserved