Is it possible using the PHP5 imagick wrapper?

Question

I don't have possibility to run convert via cmdline and the only way to use Imagick is via the PHP5 wrapper. I would need to run following command:

convert in.jpg -channel RGB -auto-level +level-colors red,white out.jpg

Unfortunately I haven't found in documentation any method that would perform any of these options. Can somebody with better knowledge of the php wrapper help?

I found only Imagick::levelImage() but couldn't simulate -auto-level and level-colors is nowhere to be found.

Thanks for help

Answer 1

In the end I got help on imagemagick forum, so for anybody with similar problem, here is what worked for me.

$img = new Imagick('in.jpg');
// grayscale image
$img->modulateImage(100, 0, 100);
// instead of auto-level option, where 65535 = Imagick::getQuantumRange()
$img->contrastStretchImage (0, 65535, Imagick::CHANNEL_ALL);

// instead of missing level-colors option, apply clut with the 2 desired colors
$clut = new Imagick();
$clut->newPseudoImage(1, 2, "gradient:red-white");
$img->clutImage($clut);

$img->writeImage('out.jpg');

For more info you can read the imagemagick thread