Checker Shadow Illusion

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john 102 Oct 06, 2004 at 16:55

04-10-06.thm.jpg

Description
The image shows how the human eye doesn’t always show the reality. The object casting a shadow in the image shows as if the shadow itself has a different shade of grey than the grey outside the shadow; however, in reality they are the same exact shade of grey. To prove this to yourself, copy the image to any paint program and then cut the two squares marked A and B. If you align the two sqaures beside each other you will notice that they are exactly the same color. Enjoy!

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NomadRock 101 Oct 06, 2004 at 17:19

Ok, I admit, I had to check myself to be sure. That is pretty amazing

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Mihail121 102 Oct 06, 2004 at 17:47

holy son of a gun… human eye sucks..

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NeZbiE 101 Oct 06, 2004 at 18:48

I’ve seen this one before, and this truly is one of the most effective ones I have ever seen.

To be quite honest, I had to open it in photoshop and check the rgb values just to make sure I wasn’t dreaming =)

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davepermen 101 Oct 06, 2004 at 19:26

i like it. takes some time till you can really see it.. and you have to be tierd.. :D as i always am.

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anubis 101 Oct 06, 2004 at 20:16

optical illusions are fun but why is this a “dev shapshot?” this could have been posted in the lounge :)
anyway… the thing itself is interesting

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phantom 101 Oct 07, 2004 at 05:49

Hm first thing I noticed is that it’s an orthagonal projection. Why is there no real perspective?

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NomadRock 101 Oct 07, 2004 at 07:23

It seems to not have been made with a 3d renderer. It looks like it was made with simple 2d shapes and gradient shading. This allows for them to ensure that colors are the exact shade they want them.

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davepermen 101 Oct 07, 2004 at 10:02

@anubis

optical illusions are fun but why is this a “dev shapshot?” this could have been posted in the lounge :)
anyway… the thing itself is interesting [snapback]12449[/snapback]

i haven’t accepted it. isn’t my fault :D

but yes i love this pic :D

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knackered3 101 Oct 07, 2004 at 18:30

I don’t understand - why aren’t there more snapshots?
The same 5 or 6 have been doing the rounds for about a month now.
Boring…

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baldurk 101 Oct 07, 2004 at 19:53

@knackered3

I don’t understand - why aren’t there more snapshots?
The same 5 or 6 have been doing the rounds for about a month now.
Boring… [snapback]12495[/snapback]

there are currently 8 snapshots in the archives. The only way to get more is for more people to submit more snapshots.

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knackered3 101 Oct 08, 2004 at 07:52

so the problem is a lack of contributions?
Oh dear, that doesn’t sound very promising….flipcode never had that problem.

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davepermen 101 Oct 08, 2004 at 11:45

you don’t know flipcode from the start, knackered. they started the same way.

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Nick 102 Oct 08, 2004 at 12:17

@knackered3

so the problem is a lack of contributions?
Oh dear, that doesn’t sound very promising….flipcode never had that problem.

Submit one yourself. Right now. Doesn’t matter what you’re working on, we want to see it. :tongue: Oh and tell you closest friends to do the same…

By the way, it’s online now for just a few weeks. Considering that I think it’s not doing badly…

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john 102 Oct 08, 2004 at 13:53

knackered3, it’s pretty stupid to say there’s not enough snapshots when you know for a fact that it depends on user submissions.
Why ask for more, when you yourself can’t contribute anything. Can’t you for once say something positive?

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anubis 101 Oct 09, 2004 at 07:43

yeah knackered3, who are you ? the grinch ?

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fyhuang 101 Oct 13, 2004 at 19:23

Let’s not gang up on people :).

My dev snapshots are single color renderings of walls and non-billboarded particle systems ;). I’ve seen this before in some other places, but this one is the most convincing. If it’s not 3D rendered, then I commend you on your art skills :).