The notion of quantitative invisibility and the machine rendering of solids
ACM '67 Proceedings of the 1967 22nd national conference
Half-tone perspective drawings by computer
AFIPS '67 (Fall) Proceedings of the November 14-16, 1967, fall joint computer conference
Some techniques for shading machine renderings of solids
AFIPS '68 (Spring) Proceedings of the April 30--May 2, 1968, spring joint computer conference
Ray tracing parametric surface patches utilizing numerical techniques and ray coherence
SIGGRAPH '86 Proceedings of the 13th annual conference on Computer graphics and interactive techniques
Data visualization using a general-purpose renderer
IBM Journal of Research and Development
A cell organized raster display for line drawings
Communications of the ACM
Continuous Shading of Curved Surfaces
IEEE Transactions on Computers
An on-line two-dimensional computation system
AFIPS '72 (Fall, part I) Proceedings of the December 5-7, 1972, fall joint computer conference, part I
AFIPS '76 Proceedings of the June 7-10, 1976, national computer conference and exposition
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In the years since the introduction of SKETCHPAD an increasing number of graphics systems for line drawing have been developed. Software packages are now available to do such things as picture definition, rotation and translation of picture data, and production of animated movies and microfilm. Automatic windowing, three-dimensional figures, depth cueing by intensity, and even stereo line drawing are now feasible and in some cases, available in hardware.