CS 248 - Introduction to Computer Graphics
Autumn Quarter, 2002
Lecture notes for Tuesday October 1
Table of contents:
- Measures of spatial resolution
- Raster CRTs
- Spatial resolution - How many pixels do we need?
- Frequency sensitivity - sine wave gratings
- Phase sensitivity - vernier acuity
- Temporal resolution - How many frames per second?
I skipped inline systems (type 2) in class. Like delta-delta (type 1),
they have been largely superceded by Trinitrons (below).
Note also that Trinitrons are usually not called shadow masks, although their
aperture grill performs essentially the same function.
Press here for the Powerpoint slides I showed in class
about triads and pixels (HTML or
For now, ignore the rightmost two columns on the second slide. We'll talk
about subpixel font rendering technology after we've covered rasterization and
antialiasing; it will make more sense to you in a few weeks than it would now.
Section D requires an understanding of Fourier analysis, which we won't cover
until Oct. 11, but in case you're interested...
I didn't have time to cover sections two and three (below) in class, but the
concepts are simple and the notes are pretty self-explanatory.
Copyright © 2002 Marc Levoy
October 3, 2002 01:22:53 PM