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Pgmagick gamma() method – Python

  • Last Updated : 03 Jun, 2020

The gamma() function is an inbuilt function in the Pgmagick library which is used to level of gamma correction. The function returns the true value on success.

Syntax:

gamma(red, green, blue)

Parameters: This function accepts three parameters as red, green and blue which correct the gamma level of red, green and blue color respectively.

Return Value: This function returns the Pgmagick object with image added.

Input Image:



Example 1:




from pgmagick import Image, DrawableCircle, DrawableText
from pgmagick import Geometry, Color
  
# draw the image of dimension 600 * 600
img = Image('input.png')
  
# invoke gamma() function
img.gamma(1, 3.4, 6
  
# invoke write function along with filename
img.write('2_a.png')

Output:

Example 2:




# import library
from pgmagick import Image, DrawableCircle, DrawableText
from pgmagick import Geometry, Color
  
# Draw image of dimension 600 * 600 having background green
im = Image(Geometry(600, 600), Color("# 32CD32"))
  
# invoke DrawableCircle() function
circle = DrawableCircle(100, 100, 300, 20)
  
# invoke draw() function
im.draw(circle)
  
# set font size to 40px
im.fontPointsize(40)
  
# invoke DrawableText() function
text = DrawableText(250, 450, "GeeksForGeeks")
  
# invoke draw() function
im.draw(text)
  
# invoke gamma() function
im.gamma(3, 45, 10
  
# invoke write function along with filename
im.write('1_b.png')

Output:

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