T3D Re: TECH-3D digest 337

["Jim Crowell" <crowell@xxxxxxxxxxxxxxx>]

Hi Rolf,

>Hyperacuity (or Vernier acuity, as it is sometimes called) shows up in a
>lot of visual tasks.

Very minor clarification: vernier acuity refers to a specific task,
detecting misalignment of image features.  Hyperacuity is a more general
term referring to the level of performance in any task involving spatial
localization that yields thresholds that are lower than those obtained by
standard acuity measures.

>This
>precison of the human visual system is always amazing for me!
>

I agree, particularly given how jittery the eyes are. There's some
interesting stuff being done on compensating for the effects of eye
movements (on stereo and other things), it's a bit of a hot topic these
days.

-Jim C.

-----------------------------------
Jim Crowell
Caltech Division of Biology
Mail Code 216-76
1200 E. California Blvd.
Pasadena, CA 91125
jim@xxxxxxxxxxxxxxx
http://vis.caltech.edu/~jim/Home.html


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