Pgmagick 锐化() 方法 – Python

sharpen()函数是 Pgmagick 库中的一个内置函数，用于锐化图像。它使用给定半径和标准偏差 (sigma) 的高斯运算符。

Syntax: 

Parameters: This function accept two parameters as mentioned above and described below:  

• radius: This parameter stores the radius value of the sharpness.
• sd: It is an optional parameter which stores the standard deviation of the image.

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

输入图像：

示例 1：

Python3

sharpen( radius, sd )

Python3

from pgmagick import Image, DrawableCircle, DrawableText
from pgmagick import Geometry, Color
 
# draw the image of dimension 600 * 600
 
img = Image('input.png')
# invoke sharpen function with radius 10 and standard deviation as 5
img.sharpen(10, 13)
 
# 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 sharpen function with radius as 9
im.sharpen(9)
 
# invoke write function along with filename
im.write('1_b.png')

输出：