(PECL imagick 2.0.0)
Imagick::solarizeImage — Applies a solarizing effect to the image
$threshold
)Applies a special effect to the image, similar to the effect achieved in a photo darkroom by selectively exposing areas of photo sensitive paper to light. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the solarization.
threshold
Returns TRUE
on success.