P3D Dunkley Effect

[boris@xxxxxxxxxxxx (Boris Starosta)]

Well, I went to see the site _http://members.aol.com/kendunkley/_ to check
out the Dunkley effect.  I was amazed!  There is indeed an easy way to
perceive "depth" in ordinary photos.  However, I also observed several
limitations, which lead me to propose the mechanism.

First of all, color in the photo appears to affect depth most strongly,
with red object moving towards you in the scene, and bluer ones back.  This
would help to make scenics appear quite real, as the infinite sky is blue.
But if you are unlucky enough to have strong red objects behind blue ones,
the image will appear pseudo in those areas.

Surprisingly, the effect is descernible in B+W photos as well, though not
as strongly. With brighter objects appearing closer, I think.

I propose that the effect is created by differential chromatic aberration
caused by the glancing view through pinholes.  Red colors appear more (or
less?) shifted than Blue, and the way you are instructed to hold the
pinholes, makes the aberration go in opposite directions for each eye.
Also, the effect is strongest further away from the picture, because the
aberration, which is slight (a slight angular value), would have a greater
effect as the apparent image is more distant and smaller.

Respectfully submitted,



Boris Starosta

usa 804 979 3930

boris@xxxxxxxxxxxx
http://www.starosta.com
http://www.starosta.com/3dshowcase

"The cut worm forgives the plough."
-Blake

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.3

mQCPAi9Yap8AAAEEANdQWo6gIXW+QIPZ/ttmwc7nFZ2/M3dXmLbx3cEU1yUq6rJh
GcOcidaZcpp7GSdjYso6obdLRRwECmPIpMx8Zv8F7xwhsud2y/GM6Xfrb5TMZ9tR
yf2Kn1SAf4iAZwXlKAV0HKTBZCrrQOauT9f9YNJIaKJOe26t5AazJ69kgdhlABEB
AAG0IkJvcmlzIFN0YXJvc3RhLCBhbWF0ZXVyIGFzdHJvbm9tZXI=
=ZyTw
-----END PGP PUBLIC KEY BLOCK-----



------------------------------