 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
And a friend sent me this one with the comparison.
Pretty interesting. My eyes still refuse to accept it he he he :)
Best regards.
> http://almstrom.org/illusion.jpg
>
> Your's is looking much better of course.
>
> Christoph
Post a reply to this message
Attachments:
Download 'checkershadow-AB - Verified.jpg' (45 KB)
Preview of image 'checkershadow-AB - Verified.jpg'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Christoph Hormann" <chr### [at] gmx de> wrote in message
news:3D976A02.95E9626B@gmx.de...
>
> http://almstrom.org/illusion.jpg
>
> Your's is looking much better of course.
Oh of course, it's POV. Thanks anyway.
I didn't see the authors name printed onto the image before. Went back to
see again and there was a vertical scroll bar with just that bottom part
unseen. I could have 'net searched immediately using the name had I known
that.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Gilles Tran" <git### [at] wanadoofr> wrote in message
news:3d97747b@news.povray.org...
>
> Must be a recent craze, I came upon this a couple of days ago.
> http://www-bcs.mit.edu/gaz/gaz-teaching/index.html
> I'm not sure I've understood all the explanations, but it's certainly
> interesting.
>
> I fell for it recently in one of my own images too. I was trying to
touch-up
> some parts of an image and the eyedropper was in clear contradiction with
my
> eyes, so I kept smudging what I thought was a dark blue and it didn't
match.
> The eyedropper was right of course...
Those are some other things to try, thanks.
Some interesting things I found just now, the Munker-White link shows colors
affected too, as you said. We trust our eyes way too much, now I'm going to
be thinking it over all the time when doing a render!
http://persci.mit.edu/gallery.html
--
Farewell,
Bob
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"JPGargoyle" <jot### [at] netcabopt> wrote in message
news:3d977fe6@news.povray.org...
> And a friend sent me this one with the comparison.
> Pretty interesting. My eyes still refuse to accept it he he he :)
That's obviously just a gradient with shades of gray there. ;-)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
hughes, b. wrote:
> http://persci.mit.edu/gallery.html
The one here is easier to tell that they're the same, just kinda look
at it with your eyes a bit out of focus and not looking AT the squares.
--
Tim Cook
http://empyrean.scifi-fantasy.com
mirror: http://personal.lig.bellsouth.net/lig/z/9/z993126
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Timothy R. Cook" <tim### [at] scifi-fantasycom> wrote in message
news:3d9798e5$1@news.povray.org...
>
> The one here is easier to tell that they're the same, just kinda look
> at it with your eyes a bit out of focus and not looking AT the squares.
I can't see them as the same until I block nearly all else except a shadowed
one and one in direct light, some of the surrounding checkers can still be
seen partially though. I tried as you suggested, covered one eye and focused
on my other hand nearer to me and off to the side enough to see the image.
Still the illusion. Tried that with the three different ones. Probably a lot
to do with how perception works for different individuals I'd guess.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"hughes, b." wrote:
>
> I can't see them as the same until I block nearly all else except a shadowed
> one and one in direct light, some of the surrounding checkers can still be
> seen partially though. I tried as you suggested, covered one eye and focused
> on my other hand nearer to me and off to the side enough to see the image.
> Still the illusion. Tried that with the three different ones. Probably a lot
> to do with how perception works for different individuals I'd guess.
Colour is relative ;)
Remco
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
hughes, b. wrote:
> I can't see them as the same until I block nearly all else except a shadowed
> one and one in direct light, some of the surrounding checkers can still be
> seen partially though. I tried as you suggested, covered one eye and focused
> on my other hand nearer to me and off to the side enough to see the image.
> Still the illusion. Tried that with the three different ones. Probably a lot
> to do with how perception works for different individuals I'd guess.
Probably has something to do with the fact that my vision sucks, and I
can do some pretty weird stuff with my eyes.
--
Tim Cook
http://empyrean.scifi-fantasy.com
mirror: http://personal.lig.bellsouth.net/lig/z/9/z993126
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Could you please post the source. I would like to make a 1024x768 version of it.
Thanks,
Bret
> Someone posted this illusion at a camera board and so I just had to try
> it using POV-Ray. I don't know what the other was made with, the person
> didn't say where they got it from.
>
> I found that I couldn't get perfect uniformity when using radiosity but
> without it the render didn't look good. It's close enough to get the
> effect. To check against your sense of vision you'll need to either cut
> and paste parts together or use a color picking eyedropper thing which
> many paint programs have and compare values.
>
> Hope it looks as good to you as I thought it was. Couple hours to make,
> 30 minutes for final render.
>
>
>
>
--
Composed with Newz Crawler 1.3 http://www.newzcrawler.com/
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
"Bret" <bre### [at] macolinocom> wrote in message news:3d98b154@news.povray.org...
> Could you please post the source. I would like to make a 1024x768 version
of it.
Is done, can be found at povray.binaries.scene-files. I almost forgot to get
the originators name added to the scene file so I had to cancel the first
posting, hopefully only the final one is seen there.
I should say that the rendering took 30 minutes (guess I did before) on my
800MHz notebook, at 512X384 using AA of 0.2 depth 2 and method 2. A four
fold increase shouldn't take too long if your computer is up to it. Rather
plain, ordinary image file for a day long render though. :-)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
