3 ms·

Something about the contrast in the image makes it seem to "pulse" as I look at it...eerie! Edit: Maybe it's just the coffee I drank?

TeMPOraL 9y ago
No, it's totally the image; I see it too and I didn't drink any coffee recently. It's one of those weird image effects that sometimes happen. Related, a combination of red and dark blue text on a black background tends to jump out from the screen for me, seemingly gaining a third dimension. I wonder how sensitive are those effects to things like ambient light levels and your display's color calibration. I'm also curious if anyone tried to explain them with reproducible steps that could be used for crafting such images on purpose?
- rangibaby 9y ago
  > I'm also curious if anyone tried to explain them with reproducible steps that could be used for crafting such images on purpose? http://www.ritsumei.ac.jp/~akitaoka/index-e.html http://www.ritsumei.ac.jp/~akitaoka/index-e.html Mr Kitaoka is quite a nice guy and will answer questions if you ask him on Facebook (his English is quite good)
- cr0sh 9y ago
  > Related, a combination of red and dark blue text on a black background tends to jump out from the screen for me, seemingly gaining a third dimension. This effect is called "chromostereoscopy": https://www2.warwick.ac.uk/fac/sci/physics/research/cfsa/people/erwin/research/3d/principles/ https://www2.warwick.ac.uk/fac/sci/physics/research/cfsa/peo... This has been commercialized into something called ChromaDepth (using special holographic lens glasses to enhance the effect): https://en.wikipedia.org/wiki/ChromaDepth https://en.wikipedia.org/wiki/ChromaDepth Strangely, the above patented system notwithstanding, I recall from being a kid this (or something similar) being marketed (with glasses too) as part of a really cheap and cheesy comic book (I most likely still have copies of that comic book at home), sometime in the 1980s. Unless I am mis-remembering the timeframe (possible), it was long before ChromaDepth (I also recall it being used for firework displays, too).
morsch 9y ago
Made me double-check to verify it's not an animation...
ajnin 9y ago
I sort of see it too. I think it's caused by a mix of 2 things, first when you stare at something for a while the details tend to fade away, and this image is very susceptible to it since it has very soft colors on the border, and the gradients are from the outside towards the inside so that causes the perceived object to shrink. Second, the eye constantly has small involuntary saccadic movements, and whenever that happens the first effect gets "reset", and the perceived image grows to its real size again.
woliveirajr 9y ago
Look just at some point in the middle of it, without moving your eyes, head. Then, after some 30 seconds, slowly move your head towards the screen, and you'll see that the edges get stronger/fainter as you move.

TeMPOraL 9y ago

No, it's totally the image; I see it too and I didn't drink any coffee recently. It's one of those weird image effects that sometimes happen. Related, a combination of red and dark blue text on a black background tends to jump out from the screen for me, seemingly gaining a third dimension. I wonder how sensitive are those effects to things like ambient light levels and your display's color calibration. I'm also curious if anyone tried to explain them with reproducible steps that could be used for crafting such images on purpose?

rangibaby 9y ago
> I'm also curious if anyone tried to explain them with reproducible steps that could be used for crafting such images on purpose? http://www.ritsumei.ac.jp/~akitaoka/index-e.html http://www.ritsumei.ac.jp/~akitaoka/index-e.html Mr Kitaoka is quite a nice guy and will answer questions if you ask him on Facebook (his English is quite good)
cr0sh 9y ago
> Related, a combination of red and dark blue text on a black background tends to jump out from the screen for me, seemingly gaining a third dimension. This effect is called "chromostereoscopy": https://www2.warwick.ac.uk/fac/sci/physics/research/cfsa/people/erwin/research/3d/principles/ https://www2.warwick.ac.uk/fac/sci/physics/research/cfsa/peo... This has been commercialized into something called ChromaDepth (using special holographic lens glasses to enhance the effect): https://en.wikipedia.org/wiki/ChromaDepth https://en.wikipedia.org/wiki/ChromaDepth Strangely, the above patented system notwithstanding, I recall from being a kid this (or something similar) being marketed (with glasses too) as part of a really cheap and cheesy comic book (I most likely still have copies of that comic book at home), sometime in the 1980s. Unless I am mis-remembering the timeframe (possible), it was long before ChromaDepth (I also recall it being used for firework displays, too).

morsch 9y ago

Made me double-check to verify it's not an animation...

ajnin 9y ago

I sort of see it too. I think it's caused by a mix of 2 things, first when you stare at something for a while the details tend to fade away, and this image is very susceptible to it since it has very soft colors on the border, and the gradients are from the outside towards the inside so that causes the perceived object to shrink. Second, the eye constantly has small involuntary saccadic movements, and whenever that happens the first effect gets "reset", and the perceived image grows to its real size again.

woliveirajr 9y ago

Look just at some point in the middle of it, without moving your eyes, head. Then, after some 30 seconds, slowly move your head towards the screen, and you'll see that the edges get stronger/fainter as you move.