I'm searching for a function in PHP which extract the histogram from an image to an PNG file. This PNG file will be located in a different folder than the actual image and the function must handle large images (over 3 MB). I did find a function almost similar to my request but the function can not handle large images and it didn't showed the histogram nor the image as showed on their website (it showed only a blank window with a border).
I hope that you guys can help me with this.
Thanks in advance.