Wand image – Baseimage.kuwahara() function in Python

Kuwahara is one of the most famous and important effect in image processing. kuwahara() function is used to add kuwahara effect to the image. The kuwahara() method applies a smoothing filter to reduce noise in an image, but also preserves edges. kuwahara() function takes only two parameters.

Syntax :

wand.image.kuwahara(radius=radius, sigma= std.deviation)

Parameters :

Parameter	Input Type	Description
radius	numbers.Real	Size of the filter aperture.
sigma	numbers.Real	Standard deviation of Gaussian filter.

Image Used :

Example #1:

# import Image from wand.image module
from wand.image import Image

# read image using Image() function
with Image(filename ="koala.jpeg") as img:

    # apply kuwahara effect using kuwahara() function
    img.kuwahara(radius = 2, sigma = 1.5)
    img.save(filename ="koalakuwahara.jpg")

Output:

Example #2: Increasing radius and sigma

# import Image from wand.image module
from wand.image import Image

# read image using Image() function
with Image(filename ="koala.jpeg") as img:

    # apply kuwahara effect using kuwahara() function
    img.kuwahara(radius = 4, sigma = 3)
    img.save(filename ="koalakuwahara.jpg")

Output: