i found this
http://php.net/manual/en/function.imagepalettecopy.php
i don't understand if it resoves and it copy the single colour is it the solution?? thank you for help

Thank you, does potrace work only in white black? maybe i need to save information about color in another way with this
http://www.coolphptools.com/color_extract
thank you
potrace is a good solution bye

thank you potrace is only black and white but it's a good starting point thank you bye

Hi i need to trace a photo into vector as illustrator or flash do, but i want to use php or objective-C i don't know how to do, is it possible using inkscape? is there Inkscape API? i need to do the trace throught php or objective-c or connecting from an app to a tool that can generate the trace cou...