Mahotas – 模板匹配
在本文中,我们将了解如何在 mahotas 中进行模板匹配。模板基本上是图像的一部分或结构。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.template_match method
Syntax : mahotas.template_match(img, template)
Argument : It takes image object and template as argument
Return : It returns image object
注意:输入图像应被过滤或应加载为灰色
为了过滤图像,我们将获取图像对象 numpy.ndarray 并在索引的帮助下对其进行过滤,下面是执行此操作的命令
image = image[:, :, 0]
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')
# filtering image
img = img.max(2)
print("Image")
# showing image
imshow(img)
show()
# template
template = np.array([
[1, 1, 1],
[1, 1, 1],
[1, 1, 1]], bool)
# matching template
new_img = mahotas.template_match(img, template)
# showing image
print("Matched 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')
# filtering image
img = img[:, :, 0]
print("Image")
# showing image
imshow(img)
show()
# template
template = np.array([
[1, 1, 1],
[1, 1, 1],
[1, 1, 1]], bool)
# matching template
new_img = mahotas.template_match(img, template)
# showing image
print("Matched Image")
imshow(new_img)
show()
输出 :
Image
Matched 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')
# filtering image
img = img[:, :, 0]
print("Image")
# showing image
imshow(img)
show()
# template
template = np.array([
[1, 1, 1],
[1, 1, 1],
[1, 1, 1]], bool)
# matching template
new_img = mahotas.template_match(img, template)
# showing image
print("Matched Image")
imshow(new_img)
show()
输出 :
Image
Matched Image