What is the usage of the Python imshow function?

The imshow function is a function in the matplotlib library used for displaying images. It is typically used in conjunction with other plotting functions to display image data. Its basic usage is as follows:

import matplotlib.pyplot as plt
import matplotlib.image as mpimg

img = mpimg.imread('image.jpg') # 读取图像数据
plt.imshow(img) # 显示图像
plt.axis('off') # 关闭坐标轴
plt.show() # 显示图像

The imshow function can take the data of an image as a parameter and display it in a plotting window. You can adjust the way the image is displayed by setting parameters, such as adjusting the size of the image or the coordinates. The imshow function can also take other parameters to set the color mapping and interpolation method of the image.