Wand clahe() function – Python
The clahe() function is an inbuilt function in the Python Wand ImageMagick library which is used to contrast limited adaptive histogram equalization.
Syntax:
clahe(width, height, number_bins, clip_limit)Parameters: This function accepts four parameters as mentioned above and defined below:
- width: This parameter stores the size of the region.
- height: This parameter stores the size of the region.
- number_bins: This parameter stores the histogram bins.
- clip_limit: This parameter stores the contrast limit.
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 ='../zambiatek.png') as image: # Clone the image in order to process with image.clone() as clahe: # Invoke clahe function clahe.clahe(300, 200, 3.4, 2.7) # Save the image clahe.save(filename ='clahe1.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 clahe function pic.clahe(300, 200, 3.4, 2.7) # Save the image pic.save(filename ='clahe2.jpg') |
Output:
