如何在 Matplotlib 中更改 imshow 纵横比？
原文:https://www.geesforgeks.org/how-change-imshow-纵横比 in-matplotlib/
纵横比是我们想要显示的图像的高度与宽度的比率。 Matplotlib 通过为图像绘图指定可选纵横比属性的值，为我们提供了修改图像纵横比的功能。
语法: pyplot.imshow(图像、外观=‘值’)
我们可以用“等于”、“自动”或任何代表所需纵横比的浮点值来替换纵横比的值。在这篇文章中，我们使用下面的图片来演示使用 Matplotlib 时长宽比的变化。
原象
示例:
蟒蛇 3
import matplotlib.pyplot as plt
import cv2
# reading image from directory
im = cv2.imread("C://Users/User/Downloads/chess5.png")
# plotting a figure for showing all
# images in a single plot
fig = plt.figure(figsize=(4, 4))
# plotting each matplot image with
# different aspect ratio parameter values
# in a seperate subplot
ax1 = fig.add_subplot(2, 2, 1)
ax1.set_xlabel('Original')
# plot the initial image as the first image
plt.imshow(im)
ax2 = fig.add_subplot(2, 2, 2)
ax2.set_xlabel('Aspect Ratio : Auto')
# plot the image with "auto" aspect ratio
# as the second image
plt.imshow(im, aspect='auto')
ax3 = fig.add_subplot(2, 2, 3)
ax3.set_xlabel('Aspect Ratio : 0.5')
# plot the image with "0.5" aspect ratio
# as the third image
plt.imshow(im, aspect='0.5')
ax4 = fig.add_subplot(2, 2, 4)
ax4.set_xlabel('Aspect Ratio : 1.5')
# plot the image with "1.5" aspect ratio
# as the fourth image
plt.imshow(im, aspect='1.5')
# display the plot
plt.show()
输出:
