The wavelet_denoise() function is an inbuilt function in the Python Wand ImageMagick library which is used to remove noise by applying a wavelet transform.
Syntax:
wavelet_denoise(threshold, softness)
Parameters: This function accepts two parameters as mentioned above and defined below:
- Threshold: This parameter stores the value of the smoothing limit.
- Softness: This parameter stores the value of the amount of attenuation of the smoothing threshold..
Return Value: This function returns the Wand ImageMagick object.
Original Image:
Example 1:
# Import library from Image
from wand.image import Image
# Import the image
with Image(filename ='../geeksforgeeks.png') as image:
# Clone the image in order to process
with image.clone() as wavelet_denoise:
# Invoke wavelet_denoise function with threshold as 10
# softness as 15
wavelet_denoise.wavelet_denoise(10, 15)
# Save the image
wavelet_denoise.save(filename ='wavelet_denoise1.jpg')
Output:
Example 2:
# Import libraries from the wand
from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color
with Drawing() as draw:
# Set Stroke color the circle to black
draw.stroke_color = Color('black')
# Set Width of the circle to 2
draw.stroke_width = 1
# Set the fill color to 'White (# FFFFFF)'
draw.fill_color = Color('white')
# Invoke Circle function with center at 50, 50 and radius 25
draw.circle((200, 200), # Center point
(100, 100)) # Perimeter point
# Set the font style
draw.font = '../Helvetica.ttf'
# Set the font size
draw.font_size = 30
with Image(width = 400, height = 400, background = Color('# 45ff33')) as pic:
# Set the text and its location
draw.text(int(pic.width / 3), int(pic.height / 2), 'GeeksForGeeks !')
# Draw the picture
draw(pic)
# Invoke wavelet_denoise function with threshold as 20
# softness as 10
pic.wavelet_denoise(20, 10)
# Save the image
pic.save(filename ='wavelet_denoise2.jpg')
Output:
