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Applies a custom convolution kernel to the image
The Imagick class
PHP Manual

Imagick::convolveImage

(No version information available, might be only in CVS)

Imagick::convolveImage — Applies a custom convolution kernel to the image

Description

bool Imagick::convolveImage ( array $kernel [, int $channel ] )
Warning

This function is currently not documented; only its argument list is available.

Applies a custom convolution kernel to the image.

Parameters

kernel

The convolution kernel

channel

Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to Imagick::CHANNEL_ALL. Refer to this list of channel constants.

Return Values

Returns TRUE on success.

Errors/Exceptions

Throws ImagickException on error.

The Imagick class
PHP Manual