Mahotas – 图像拉伸 RGB
在本文中,我们将了解如何在 mahotas 中对 RGB 图像进行拉伸。对比度拉伸(通常称为归一化)是一种简单的图像增强技术,它试图通过“拉伸”图像包含的强度值范围以跨越所需的值范围来提高图像的对比度,例如像素值的整个范围。有关的图像类型允许。 RGB 拉伸是stretch()函数的变体,可在RGB 图像上按通道工作
在本教程中,我们将使用“lena”图像,下面是加载它的命令。
mahotas.demos.load('lena')
下面是莉娜的图片
In order to do this we will use mahotas.regmin method
Syntax : mahotas.stretch_rgb(img)
Argument : It takes image object as argument
Return : It returns image object
下面是实现
Python3
# importing required libraries
import mahotas
import mahotas.demos
from pylab import gray, imshow, show
import numpy as np
import matplotlib.pyplot as plt
# loading image
img = mahotas.demos.load('lena')
print("Image")
# showing image
imshow(img)
show()
# stretching rgb image
new_img = mahotas.stretch_rgb(img)
# Stretched image
print("Stretched Image")
imshow(new_img)
show()
Python3
# importing required libraries
import mahotas
import numpy as np
from pylab import gray, imshow, show
import os
import matplotlib.pyplot as plt
# loading image
img = mahotas.imread('dog_image.png')
print("Image")
# showing image
imshow(img)
show()
# stretching image
new_img = mahotas.stretch_rgb(img)
# Stretched image
print("Stretched Image")
imshow(new_img)
show()
输出 :
Image
Stretched Image
另一个例子
Python3
# importing required libraries
import mahotas
import numpy as np
from pylab import gray, imshow, show
import os
import matplotlib.pyplot as plt
# loading image
img = mahotas.imread('dog_image.png')
print("Image")
# showing image
imshow(img)
show()
# stretching image
new_img = mahotas.stretch_rgb(img)
# Stretched image
print("Stretched Image")
imshow(new_img)
show()
输出 :
Image
Stretched Image