The equalize() function is an inbuilt function in the Pgmagick library which is used to perform histogram equalization to the image.
Syntax:
equalize()Parameters: This function does not accept any parameters.
Return Value: This function returns the Pgmagick object with image added.
Input Image:
Example 1:
# import library
from pgmagick import Image, DrawableCircle, DrawableText
from pgmagick import Geometry, Color
# draw the image of dimension 600 * 600
img = Image('input.png')
# invoke equalize() function
img.equalize()
# 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 equalize() function
im.equalize()
# invoke write function along with filename
im.write('1_b.png')
Output:
