Comments on: Ponzo Illusion Collection

By: mittens

mittens — Thu, 05 Jan 2012 15:58:27 +0000

very cool

By: Kelly

Kelly — Wed, 28 Sep 2011 21:31:41 +0000

This reminds me of the mistaken belief that the sun has different optical sizes as it rises and sets throughout the day. People I explain this to do not believe that the image of the sun is the same exact size at sunset (when it appears large) as it is at its peak midday (appearing smaller). This is because we are interpreting the sun’s size in refrence to earthbound objects (buildings, trees, etc.) at sunset/rise, but do not have such apparent contrasting objects when the sun is at its peak. THE TEST: hold you hand at arms length (extended) and cover the sun’s image at its peak. Not which of you finger just barely covers it. Then, at sunset, when the sun is “big”, do the same. The same finger will cover the sun!

By: Me

Me — Sat, 23 Apr 2011 21:57:02 +0000

Milner and Goodale in 1985 suggested that there is action and perception visual systems. The perception is responsible for what. It is known as the Ventral visual stream using a occipital – temporal pathway. Anyway long story short the ventral system is responsible for object size constancy. So the same sized object perceived in further away seems bigger because we try to maintain an object size constancy notion that would be informative of its dimensions based on size/distance interaction. So the illusion is also in the question. Which object is bigger answer correctly the one further away on realistic terms. Which figure is drawn bigger outside a space continuous doesn’t.

By: Gman

Gman — Tue, 04 Jan 2011 22:01:25 +0000

The background gets smaller, making it look as if the figures span more windows.

By: olivia

olivia — Thu, 16 Dec 2010 16:43:08 +0000

ilove the little short guys! they’re so short! lol!

By: Samantha Hermundson

Samantha Hermundson — Fri, 25 Jun 2010 14:16:50 +0000

and all the other ones the things in the picture are all the same size

By: Samantha Hermundson

Samantha Hermundson — Fri, 25 Jun 2010 14:16:13 +0000

the last one is just the same person but its smaller and reversed!!

By: Anonymous

Anonymous — Tue, 30 Mar 2010 21:09:59 +0000

i dont see it…..???

By: lolz

lolz — Wed, 24 Feb 2010 23:53:13 +0000

no i don’t see it in any pic besides the last two

By: Anonymous

Anonymous — Thu, 18 Dec 2008 22:33:00 +0000

Felix – you clearly have no idea what foreshortening means

By: Anonymous

Anonymous — Wed, 03 Dec 2008 02:11:00 +0000

i don’t see any suprise!
where is it? =s

By: Anonymous

Anonymous — Thu, 25 Sep 2008 08:44:00 +0000

Huh? Now the “feeling lucky?” bar’s gone.

By: Anonymous

Anonymous — Thu, 25 Sep 2008 07:25:00 +0000

Is the suprise the “feeling lucky?” bar that’s on the left upper hand corner? By the way, nice illusions.

By: Tin Soldier

Tin Soldier — Thu, 25 Sep 2008 05:08:00 +0000

Seems the mac widget is taking me to google reader to add the comments feed to my reader. It used to bring me right to the page for that days illusion.

By: Chris

Chris — Thu, 25 Sep 2008 02:55:00 +0000

Sweet stuff,
and yeah where is that surprise