(PECL imagick 2, PECL imagick 3)
Imagick::getImageChannelStatistics — Returns statistics for each channel in the image
public Imagick::getImageChannelStatistics(): array
Returns statistics for each channel in the image. The statistics include the channel depth, its minima and maxima, the mean, and the standard deviation.
This function has no parameters.
Returns true on success.
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https://www.php.net/manual/en/imagick.getimagechannelstatistics.php