selective recolor an image

[Mark]

how might one recolor an image..so that, for example, all shades of
purple are converted to shades of red?

i'm sure someone's already made a function out there, i just don't have
a clue what to google.

if someone could point me in the right direction, or post some code, it
would be much appreciated.

[petersprc@gmail.com]

Re: selective recolor an image

You can use imagecolorset. There's an an example in the comment from
olivier in the manual page:

http://us3.php.net/manual/en/function.imagecolorset.php#13963

Another way is to copy the image pixel by pixel. Example:

http://www.phpied.com/image-fun/

Mark wrote:

how might one recolor an image..so that, for example, all shades of
purple are converted to shades of red?
>
i'm sure someone's already made a function out there, i just don't have
a clue what to google.
>
if someone could point me in the right direction, or post some code, it
would be much appreciated.