Sketch is another artistic special effect present in Wand library in python. sketch() function generates a pencil sketched image in output.For best results, radius value should be larger than sigma.
Syntax :
Python3
wand.image.sketch( radius, sigma, angle)# radius should always be greater than sigma(standard deviation)Parameter :
Parameter Input Type Description radius numbers.Real Size of Gaussian aperture. sigma numbers.Real standard deviation of the Gaussian operator. angle numbers.Real direction of blur.
Source Image:
Example #1:
Python3
# import display() to show final imagefrom wand.display import display# import Image from wand.image modulefrom wand.image import Image# read file using Image functionwith Image(filename ="koala.jpeg") as img: # generate pencil sketch image using sketch() function img.sketch(0.5, 0.0, 98.0) # save final image img.save(filename ="rb_koala.jpeg") # display final image display(img) |
Output :
Example #2: To get the best result transform image to grayscale image
Python3
# import display() to show final imagefrom wand.display import display# import Image from wand.image modulefrom wand.image import Image# read file using Image functionwith Image(filename ="koala.jpeg") as img: # transform to grayscale image img.transform_colorspace("gray") # generate pencil sketch image using sketch() function img.sketch(0.5, 0.0, 98.0) # save final image img.save(filename ="rb_koala.jpeg") # display final image display(img) |
Output :
