The vignette(() function is an inbuilt function in the Python Wand ImageMagick library which is used to create a vignette-style effect on the image. It reduces image brightness or saturation toward the periphery compared to the image center.
Syntax:
vignette(radius, sigma, x, y)Parameters: This function accepts four parameters as mentioned above and defined below:
- Radius: This parameter stores the radius of the Gaussian blur effect.
- Sigma: This parameter stores the standard deviation of the Gaussian effect.
- x: This parameter stores the number of pixels to offset inward from the top & bottom of the image.
- y: This parameter stores Number of pixels to offset inward from the left & right of the image.
Return Value: This function returns the Wand ImageMagick object.
Original Image:
Example 1:
Python3
# Import library from Image from wand.image import Image# Import the imagewith Image(filename ='../neveropen.png') as image: # Clone the image in order to process with image.clone() as vignette: # Invoke vignette function with radius as 12, sigma as 10, # x as 20, y as 20 vignette.vignette(12, 10, 20, 20) # Save the image vignette.save(filename ='vignette1.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 vignette function with radius as 12, sigma as 10, x as 10 # y as 10 pic.vignette(12, 10, 10, 10) # Save the image pic.save(filename ='vignette2.jpg') |
Output:
