Comprehensive Halftoning of 3D Scenes
Author(s): Oleg Veryovka, John W. Buchanan.
Proceedings: Skiggraph '99,
1999.
[BibTeX] 
Abstract:
The display of images on binary output hardware requires a halftoning
step. Conventional halftoning algorithms approximate image
values independently from the image content and often introduce
artificial texture that obscures fine details. The objective of this
research is to adapt a halftoning technique to 3D scene information
and thus to enhance the display of computer generated 3D
scenes. Our approach is based on the control of halftoning texture
by the combination of ordered dithering and error diffusion techniques.
We extend our previous work and enable a user to specify
the shape, scale, direction, and contrast of the halftoning texture using
an external buffer. We control texture shape by constructing a
dither matrix from an arbitrary image or a procedural texture. Texture
direction and scale are adapted to the external information by
the mapping function. Texture contrast and the accuracy of tone
reproduction are varied across the image using the error diffusion
process. We halftone images of 3D scenes by using the geometry,
position, and illumination information to control the halftoning
texture. Thus, the texture provides visual cues and can be used to
enhance the viewer’s comprehension of the display.