T3D Re: acuity enhanced with binocular vision

[roberts@xxxxxxxxxxxxxxxxx (John W Roberts)]

>Date: Thu, 19 Mar 1998 11:48:20 -0700
>From: Jim Crowell <crowell@xxxxxxxxxxxxxxx>
>Subject: T3D Re: acuity enhanced with binocular vision

>That one is almost certainly measured.  I think just about everyone in the
>field is aware of the need to calibrate (& gamma-correct) their displays.
>I think far fewer people are aware of things like adjacent-pixel
>nonlinearities (i.e. the fact that the brightness of one pixel depends on
>the brightness of the preceding pixel), however, so as you said one would
>want to worry about calibration with small features...

Also, small-area contrast is horribly difficult to measure, due to issues
such as veiling glare and lens flare. I've seen papers that cite characters
on a screen as an example of worst-case scenarios for contrast measurement.
Some possible approaches to improved small-area contrast measurement have
only been published in the last year or so.

Still, the basic findings of the experiment should be valid.

John R


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