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-   -   December 18, 2007: Illusion (http://cellar.org/showthread.php?t=16214)

classicman 12-18-2007 01:49 PM

Could you explain that in english for me? East coast if possible.

Thanks.

Clodfobble 12-18-2007 03:24 PM

glatt - the lines don't work because they're not 2-D. Our brain wants the towers to be converging because we see they are getting smaller towards the top, and thus must be going "away" from us. The lines aren't getting skinnier so they must be "flat." That's why LJ's quadrilaterals that get smaller towards the top produce the illusion, but plain lines don't.

monster 12-18-2007 03:41 PM

1 Attachment(s)
Well here they are swapped over. Does it still work?

if so, then the alterations phage is concerned about are immaterial.

glatt 12-18-2007 03:47 PM

I thought of doing that too monster, but ran out of time. Good job.

sweetwater 12-18-2007 08:51 PM

OK, is it because i'm new here, or does this illusion work when the image is upside down for everyone else, too?

monster 12-18-2007 08:59 PM

Quote:

Originally Posted by sweetwater (Post 417741)
OK, is it because i'm new here, or does this illusion work when the image is upside down for everyone else, too?

that's because you're standing on your head, honey. i reckon you'll fit right in, welcome! :lol:


(well either that or you're an aussie-type, which also works)

xoxoxoBruce 12-18-2007 10:33 PM

Yup, works upside down, too.
Welcome to the Cellar, sweetwater.:D

JuancoRocks 12-18-2007 10:35 PM

Illusion
 
I'm leaning toward the first explanation.....:D

xoxoxoBruce 12-18-2007 10:53 PM

We could discuss it over Pisa.

RellikLaerec 12-18-2007 11:47 PM

nah... just a pisa pisa forsa mesa

Gravdigr 12-19-2007 07:16 AM

?!

Saphyre 12-19-2007 10:27 AM

My brain is broke. Whether from the image(s) or Phages explanations about trimming. :right: It's just broke.

I think I'll go look at some nice Eschers now.

Slothboy 12-19-2007 10:50 AM

Nice one Monster, it does still work. I did a couple more experiments. The first is I flipped the one on the left horizontally, now they appear as a mirror image, both identical.

http://img184.imageshack.us/img184/9...mmirrorsl5.jpg

Next I flipped the one on the right as well, and suddenly the illusion is reversed and now the one on the left appears to be leaning more. Again, I didn't just flip the entire .jpg, I flipped each side individually.

http://img404.imageshack.us/img404/4...flippedhn6.jpg

This is an amazing illusion. I hate my brain for trying to confuse me.

lookout123 12-19-2007 12:03 PM

1 Attachment(s)
ow

Laure 12-21-2007 10:00 AM

Phage0070, it's the SAME IMAGE. Right-click on it and select Properties. Same file path. The artifacts you show in the difference images are errors in the algorithm.


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