What is Digg?62 Comments
- inactive, on 10/12/2007, -0/+77I love optical illusions :) I was waiting for it to scream though, I had my speakers turned down.
- Shorties, on 10/12/2007, -1/+46Oh man at first I thought this was going to be a shocker, anyway pretty cool effect.
- dpknc84, on 10/12/2007, -0/+32Am I the only person that doesn't trust these types of "stare at the screen" things anymore? Sure this one is legit, but I'm always afraid now I'm going to have a heart attack by some random ghost appearing on the screen, lol.
- f3l1x, on 10/12/2007, -2/+20I like the set.
http://www.stareclips.com/rainbow_with_waterfall.asp - Neelix, on 10/12/2007, -2/+18Wow, I had to go back and confirm that it actually was black and white, because I couldn't believe it.
Totally awesome!
Now, just an idea that I had after watching this, but, would it be possible to develop video compression techniques that work off of optical illusions? I don't know anything about the nitty gritty details of video compression, but after seeing this and other crazy optical illusions that trick our brains into seeing things in a completely different way than they really are, the thought of using some of those techniques to minimize the amount of data in a video file crossed my mind.
I have no idea if this concept would work at all, but just wanted to throw that out there so I could be educated by the Digg crowd. - Dested, on 10/12/2007, -6/+21I was actually about to mark this as lame. I had to go back and check and sure enough, black and white. Dugg+
- energyblue, on 10/12/2007, -0/+14I scares me more just THINKING there is going to be a scream.
- AustinMeoang, on 10/12/2007, -1/+15I know how you feel, I did the same, I hate those >
- nandorocker, on 10/12/2007, -1/+14The way optical illusions such as this works, is it "burns" an image in the back of your eye (your retina). The image you stare at is in a negative color space, then you're exposed to the black and white picture, and your eye overlays the previous image, except inverted.
It takes staring at something for about 30 seconds for it to "burn" onto your retina. I don't know about using this on a frequent basis, as a video compression technique, since that sounds like it could possibly damage your eyes. - inactive, on 10/12/2007, -11/+21To the poster: As of December 18th, there is a new videos section. This is a video. It belongs in the videos sections.
- penneyisok, on 10/12/2007, -1/+9i accidental paused it about 20 seconds in....took me a few minutes to realize. I was wondering why nothing was happening lol
- razordancer, on 10/12/2007, -3/+11Interesting idea, but the image has to 'burn in' to your retina for a while, so using this for moving images likely wouldn't work.
Edit: Beaten to the punch, digg me down... - Midnightbrewer, on 10/12/2007, -0/+8Actually, that's kind of how video compression has worked since the VHS tape. The human eye is more sensitive to black and white than color, so the color information is compressed more heavily than the luminance of the image, thus allowing the image to be compressed to a feasible size for recording to tape. This same phenomenon is exploited in today's DV compression, which is what your average video camera uses. For every four pixels of luminance information, only one pixel of color information is stored (you can think of it like shrinking the color portion of each video frame down to 1/4 its original size, and then scaled up again when the frames are played back.)
- stilldavid, on 10/12/2007, -1/+8colorblind, FTL
- Loshunter, on 10/12/2007, -0/+6Yeah, once you've been tricked by one of them you tend to get defensive...
- jd5alive, on 10/12/2007, -0/+6lol i do that everytime. i want to kill the creators of those things
- buddydvd, on 10/12/2007, -1/+6http://myopticalillusions.com allows you to recreate the illusion with your own image that you upload.
- MasterWizard, on 10/12/2007, -0/+4the video was so cool, i almost forgot that this was in the wrong section!
- DenDen, on 10/12/2007, -0/+3Actually, that's all it is. When you stare at something for a long stretch, the image is burned into your eyes momentarily, in a "negated" fashion. Example, stare at a white dot for a minute, then look at the wall, the dot is black.
- eric1, on 10/12/2007, -0/+3It was very cool, I was waiting until the end for the illusion; I thought the 'color waterfall' was more set up. Had to rewatch it after I knew the 'trick' to confirm it was B&W. Very cool.
- synystar, on 10/12/2007, -0/+3@bannonto what the hell are you talking about?
- superkoopa, on 10/12/2007, -0/+3There are a lot of these type of optical illusions, but they are always very cool.
- blackhood, on 10/12/2007, -1/+4Its like this castle picture I found.
http://www.robertrunyon.com/castle - bravecoward, on 10/12/2007, -0/+3Thanks, i guess i totally missed the point of it.
- thefangedrabbit, on 10/12/2007, -0/+3Because the picture is black and white. Your eyes tricked you into thinking it's color.
- dacheetah, on 10/12/2007, -3/+6It's not burning into your retina, it's your brain subconsciously getting used to the previous image.
You get a similar effect if you wear red-blue glasses for too long (try wearing a pair around the house for about 15-20 minutes) When you remove them your brain is compensating (differently for each eye) for the colour of the glasses, even after you take them off. Closing one eye everything looks warm and has a reddish tint to it (looking through the blue eye) and closing the other eye gives everything a cool blueish tint. - bigellow, on 10/12/2007, -0/+2At first I thought it was going to be one of those scary ones too, but I took the chance. Really pleased it's a legitimate illusion. Also nice to see it's a really good one. I found the site map that lists all of the ones featured on the original website:
http://www.stareclips.com/sitemap.asp - M1THR4ND1R, on 10/12/2007, -0/+2 Very cool! Too bad I spoiled it for myself by checking the end of the video first (in case of a screamer)..
- inactive, on 10/12/2007, -1/+3who says you need drugs to see *****?
- McNash, on 10/12/2007, -0/+2I only saw it in color for a fraction of a second. :(
- brainovermind, on 10/12/2007, -1/+3I have seen quite a few of these types of illusions, thanks mainly to many neuroscience classes and seminars. A lot of the presenters and lecturers love to catch the attention by starting with these. Dr. Ramachandran from UCSD has provided quite a few over the years, so others that loved this one can probably search for him and find some amazing optical illusions as well as tricks to make you think you have a huge Pinocchio nose, see through your hand and others. Another famous one is the one that has you stare at a picture of Jesus and then as the picture is taken away you can't get him out of your vision, appearing everywhere. There is also the waterfall effect that many people can experience accidentally after watching waterfalls, or even scrolling tricks via the computer.
I hadn't seen this particular one, though. I too had to recheck to make sure it wasn't a dirty trick by a graphic artist with too much time on his hands. Great find and definitely worth a Digg. - ahughes, on 10/12/2007, -0/+2This actually works. I played it once and stared at it, wow, trippy.
I played it a second time and intentionally looked away, wow, b+w.
Amazing! - Warpling, on 10/12/2007, -0/+2finger over the mute key... :)
- onefix, on 10/12/2007, -0/+2Same here...maybe we’re doing it wrong ... maybe it has something to do with the way our brains are wired :) Either that or everyone else is seeing it for a fraction of a second too.
- AustinMeoang, on 10/12/2007, -0/+2Yeah, I know, after one bad experience you don't trust anything anymore.
- SSCrow, on 10/12/2007, -0/+2@ My Brain
Good job Brain! you ***** up once again. - Arkitan, on 10/12/2007, -0/+2You're certainly not the only one. I'm not sure how many cool things I've totally missed out on because I figured it might be a scare screen so I just closed it.
- gr8edchz, on 10/12/2007, -0/+2My first thought was.. cool.. My second thought was, as a test, does it teach you anything about yourself or your brain to measure the amount of exposure time relative to seeing the color version and then how long it takes for the color to fade? Do some people need to be exposed for longer or shorter amounts of time before seeing the color version? Do some peoples eyes return to "normal" after a 30 second exposure? Does it mean anything if there is a difference between different people?
- Fiyerstorm, on 10/12/2007, -1/+3Anyone know exactly how to recreate this effect using Photoshop? I see that it's inverting colors for the most part but there seems to be more to it than that. Any help would be appreciated. :)
*flees from the evil Diggers who probably think he's a retard for posting this* - Kbiscu1t, on 10/12/2007, -0/+1Old-ish illusion, but still vary cool!
- artdwpmt, on 10/12/2007, -2/+3Oldest pointless negative comment in the book.
Not everyone has seen it before. If you have, ignore it and go on to something else. - Loshunter, on 10/12/2007, -1/+2Yeah, this tutorial was on Digg a while back.
http://www.johnsadowski.com/color_illusion_tutorial.html
Enjoy. - neoian, on 10/12/2007, -2/+3Cool. I really like these kinds of illusions
- nepawoods, on 10/12/2007, -1/+1http://www.robertrunyon.com/castle - much more effective demonstration of the same effect
- bravecoward, on 10/12/2007, -2/+2How come its still black and white when you fast forward to it?
- artdwpmt, on 10/12/2007, -3/+3While switching back and forth between the two, I found that if I stared at the negative image for the right amount of time I could get the colour image which would then fade to black and white within a few seconds. Really cool.
- Scynet, on 10/12/2007, -2/+2Total colorblindness (monochromacy) is extremely rare among the types of color deficiencies (less than 1/1000). Most "colorblind" people see almost all colors, and illusions like this affects just like it would for a normal color vision. Myths FTL :)
- dttvb, on 10/12/2007, -1/+0I think I found out how to reproduce this effect.
First, load a picture twice, now you have 2 pictures. First one for colors and another one for b/w.
On first picture, inverse it, and then create a new layer, fill it with pure red, and change the layer mode to "Saturation."
Create another layer, fill it with 50% gray. Change its layer mode to "Luminosity."
On another image, just make it gray scale. And try switching between these image. - nepawoods, on 10/12/2007, -2/+1not to mention that that video has only 4 or 5 *different* frames - could have been done with an animated gif and appropriate time delays between frames. still, I think the mouseover ones that let you control it work better.
- inactive, on 10/12/2007, -2/+0This is quite cool. I have seen this before. Check out this one:
http://www.johnsadowski.com/big_spanish_castle.php -
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