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- From: charles@capmkt.COM (Charles Neveu)
- Newsgroups: alt.3d
- Subject: Re: RDS effects
- Message-ID: <762@capmkt.COM>
- Date: 10 Nov 92 20:36:54 GMT
- References: <730.800.uupcb@pcb.batpad.lgb.ca.us> <17891@autodesk.COM>
- Organization: Capital Market Technology
- Lines: 23
-
- danielg@autodesk.com (Daniel Green) writes:
- >Has anyone else noticed that the x-eyed technique provides a really fast
- >way to solve those puzzles that show two pictures that have only a few
- >subtle differences? Fuse those image pairs, and the differences pop right
- >out as sort of sparkly areas.
-
- Yes! Classic example of parallelizing a serial search problem.
-
- By the way, the "sparkly areas" are called "lustre", which is why
- shimmery things look shimmery - the two eyes are getting very
- different images, in local areas, areas which the visual system
- expects to pretty closely resemble each other. Wavy specular surfaces
- show this, so do minerals like tiger's eye. It's also the reason some
- shiny things looks shimmery when viewed through cross polarized 3-d
- glasses: one lens passes the reflection which the other blocks it.
-
- So it's interesting that you describe it as "sparkly", since there's
- no sparkle in the printed image. Our visual system interprets strong
- binocular differences as shinyness.
-
- Charles Neveu (neveu@milo.berkeley.edu)
- Neurology Unit
- Program in Physiological Optics
- UCBerkeley
-