(No version information available, might be only in CVS)
Imagick::uniqueImageColors — Discards all but one of any pixel color
This function is currently not documented; only the argument list is available.
This function is EXPERIMENTAL. The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.
Discards all but one of any pixel color.
Returns TRUE on success.