Wand negate() function – Python
Last Updated :
04 Oct, 2021
The negate() function is an inbuilt function in the Python Wand ImageMagick library which is used to negate the colors in the reference image.
Syntax:
negate(grayscale, channel)
Parameters: This function accepts two parameters as mentioned above and defined below:
- grayscale: This is a boolean parameter which stores the state to negate grayscale pixels in the image.
- channel: This parameter stores the channel type as ‘green’, ‘red’, ‘yellow’ etc.
Return Value: This function returns the Wand ImageMagick object.
Original Image:
Example 1:
Python3
from wand.image import Image
with Image(filename = '../geeksforgeeks.png' ) as image:
with image.clone() as negate:
negate.negate( True , "green" )
negate.save(filename = 'negate1.jpg' )
|
Output:
Example 2:
Python3
from wand.image import Image
from wand.drawing import Drawing
from wand.color import Color
with Drawing() as draw:
draw.stroke_color = Color( 'black' )
draw.stroke_width = 1
draw.fill_color = Color( 'white' )
draw.circle(( 200 , 200 ),
( 100 , 100 ))
draw.font = '../Helvetica.ttf'
draw.font_size = 30
with Image(width = 400 , height = 400 , background = Color( '# 45ff33' )) as pic:
draw.text( int (pic.width / 3 ), int (pic.height / 2 ), 'GeeksForGeeks !' )
draw(pic)
pic.negate( False , "yellow" )
pic.save(filename = 'negate2.jpg' )
|
Output:
Share your thoughts in the comments
Please Login to comment...