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Wow, that is cool. I was mass-measuring some images with povray for a work
application and went to the trouble in my first case of converting each one
to ASCII-format PPM's.
Warp wrote:
> OpalPlanet <ecs### [at] msn com> wrote:
>> Is there any way to take the color of a certain area of an image (jpeg,
>> png, etc.) and find out its values in rgb?
>
> Perhaps a bit surprisingly, there is:
>
> // The image will extend from <0, 0, 0> to <1, 1, 0>:
> #declare Image = function { pigment { image_map { jpeg "SomeImage" } } };
>
> #declare Pixel = Image(.5, .5, 0);
>
> #debug concat("The value at <.5, .5> is <", vstr(3, Pixel, ", ", 0, 3),
> #">\n")
>
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