Imagick::sigmoidalContrastImage
Imagick::solarizeImage
The Imagick class
PHP Manual

# Imagick::sketchImage

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

Imagick::sketchImage — Simulates a pencil sketch

### Description

bool Imagick::sketchImage ( float `$radius` , float `$sigma` , float `$angle` )
Warning

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

Simulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and Imagick::sketchImage() selects a suitable radius for you. Angle gives the angle of the blurring motion.

### Parameters

`radius`

`sigma`

`angle`

### Return Values

Returns `TRUE` on success.

Imagick::sigmoidalContrastImage
Imagick::solarizeImage
The Imagick class
PHP Manual