(No version information available, might be only in CVS)
Imagick::contrastStretchImage — Enhances the contrast of a color image
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.
Enhances the contrast of a color image by adjusting the pixels color to span the entire range of colors available
Returns TRUE on success.