Imagick
PHP Manual

Imagick::getImageChannelStatistics

(PECL imagick 2.0.0)

Imagick::getImageChannelStatisticsReturns statistics for each channel in the image

Description

array Imagick::getImageChannelStatistics ( void )

Returns statistics for each channel in the image. The statistics include the channel depth, its minima and maxima, the mean, and the standard deviation. You can access the red channel mean, for example, like this:

Return Values

Returns TRUE on success.


Imagick
PHP Manual