查找上载图像中的颜色数量（忽略抗锯齿/压缩伪像）？

Question

is there a way to find the number of colors in an uploaded image, ignoring the compression artifacts and anti-aliasing between colors?

I am creating a design tool that allows users to upload images, and I want it to return prices (which are based on colors in the image) in real-time without someone having to manually check each upload.

Only need 99% accuracy, fringe cases are okay.

Answer 1

You'll have a tough time finding a pre-existing method for this. Spot colors such as Pantone Color matching System aren't color spaces, they are matching systems. As far as I know, there is no way to auto-detect PMS or other such matching systems.

Edit based on comment below:

Try using http://www.php.net/manual/en/imagick.getimagecolors.php