charcoal() generates a sketch kind of image of original image. A very similar image to edge extraction is generated with inverted colours. One of the artistic simulations, charcoal() can emulate a drawing on paper.
Syntax :wand.image.charcoal(radius, sigma)
Parameter Input Type Description radius numbers.Real The size of the Gaussian operator. sigma numbers.Real The standard deviation of the Gaussian.
Example 2: Increasing radius and sigma value.
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