At 12:39 PM 03/16/2003 +0100, Eugen Leitl wrote:
On Sat, 15 Mar 2003, Bill Stewart wrote:
> They're probably not independent, but they'll be influenced by lighting,
> precise viewing angles, etc., so they're probably nowhere near 100%
> correlated either.
I notice the systems mentioned in the study rely on biometrics extracted
from flat images. Recent crop of systems actually scan the face geometry
by using patterned light (apparently, cheaper than using a laser scanner),
resulting in a much richer and standartized (lighting and facial
orientation is irrelevant) biometric fingerprint.
But there are two sides to the problem -
recording the images of the people you're looking for,
and viewing the crowd to try to find matches.
You're right that airport security gates are probably a pretty good
consistent place to view the crowd, but getting the target images
is a different problem - some of the Usual Suspects may have police mugshots,
but for most of them it's unlikely that you've gotten them to sit down
while you take a whole-face geometry scan to get the fingerprint.
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