Cool - I love these optical demonstrations. Just imagine the same eye that
sees color
when it isn't there also sees ghosts and sasquatch!
On Mon, Jul 7, 2008 at 8:28 PM, Oleg Kobchenko <
olegykj@...> wrote:
> > From: June Kim <
juneaftn@...>
>
> >
> > You'll see a black&white picture but it'll look like a full-colored
> picture.
> >
> >
http://effbot.org/zone/ponies.htm> >
> > Python code to generate the illusion is linked on that page.
> >
> > Translating that code into J would be interesting (which I'll do when
> > I get free time)
>
> The two images are: inverted chroma and luminosity.
> It uses the memory effect of the retina when it fatigues and
> preserves inverse image for some time, which in this case
> overlaps with the second (luminance) to get a full color
> image illusion.
>
> There's YUV transforms in media/image3 addon.
>
>
>
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