Wand blur() function – Python
The blur() function is an inbuilt function in the Python Wand ImageMagick library which is used to blur the image.
Syntax:
blur(radius, sigma, channel)Parameters: This function accepts three parameters as mentioned above and defined below:
- radius: This parameter is used to specify the value of radius which is the size of the gaussian aperture.
- sigma: This parameter is used to specify the value of sigma which is the standard deviation of the gaussian filter.
- channel: This parameter is used to specify the value of image channel as undefined, ‘red’, ‘gray’, ‘cyan’, ‘green’, ‘magenta’, ‘blue’, ‘yellow’, ‘alpha’, ‘opacity’, ‘black’, ‘index’, ‘composite_channels’, ‘all_channels, ‘sync_channels’, ‘default_channels’.
Return Value: This function returns the Wand ImageMagick object.
Original Image:
Example 1:
Python3
# Import library from Imagefrom wand.image import Image# Import the imagewith Image(filename ='../geeksforgeeks.png') as image: # Clone the image in order to process with image.clone() as blur: # Invoke blur function with radius as 10, sigma as 12 # channel as 'Green' blur.blur(int(10), int(12), 'Green') # Save the image blur.save(filename ='blur1.jpg') |
Output:
Example 2:
Python3
# Import libraries from the wand from wand.image import Imagefrom wand.drawing import Drawingfrom wand.color import Colorwith 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 blur function with radius as 200, sigma as 5 # Channel as red pic.blur(int(200), int(5), 'Green') # Save the image pic.save(filename ='blur2.jpg') |
Output:
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