Pgmagick equalize() 方法 – Python

equalize()函数是 Pgmagick 库中的内置函数，用于对图像执行直方图均衡。

Syntax: 

Parameters: This function does not accept any parameters.
Return Value: This function returns the Pgmagick object with image added.

输入图像：

示例 1：

Python3

equalize()

Python3

# 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')

输出：

示例 2：

Python3

# 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')

输出：