1. Color triads on a raster display
CS Introduction to Computer Graphics
Autumn quarter, 2008
Additional slides for September 25 lecture

2. Triads and color mixing
SMPTE color bars
closeup on a Sony Trinitron monitor

3. Triads versus pixels integral pixel font integral pixel font
(Sony Trinitron)
integral pixel font
(IBM LCD)
antialiased font
(Adobe Acrobat)
subpixel font
(Adobe Cooltype)
integral pixel font
Internet Explorer 5.5, Times Roman font
Subpixel font rendering technology
See also Microsoft Cleartype – used in Vista
Mac also does this, ignoring MS’s patent, since others had it earlier than MS. MS has never tried to enforce this patent.
As pixels become smaller, it’s less necessary
If you rotate your monitor 90 degrees, it renders incorrectly! (Mac will revert to grayscale antialiasing)
Adobe Cooltype
Acrobat 5.0, with one of many possible parameter settings for Cooltype