The white_threshold() function is an inbuilt function in the Python Wand ImageMagick library which is used to force all pixels above the threshold into white while leaving all pixels below the threshold unchanged.
Syntax:
white_threshold(color)Parameters: This function accepts single parameters as mentioned above and defined below:
- color: This parameter stores the value of the color as string like ‘green’, ‘white’, ‘red’.
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 white_threshold: # Invoke white_threshold function with "Green" color white_threshold.white_threshold("green") # Save the image white_threshold.save(filename ='white_threshold1.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 white_threshold function with "red" color pic.white_threshold("red") # Save the image pic.save(filename ='white_threshold2.jpg') |
Output:
