import matplotlib.pyplot as plt
from matplotlib.patches import Rectangle
from PIL import Image
im = Image.open('stinkbug.png')
# Display the image
plt.imshow(im)
# Get the current reference
ax = plt.gca()
# Create a Rectangle patch
rect = Rectangle((50,100),40,30,linewidth=1,edgecolor='r',facecolor='none')
# Add the patch to the Axes
ax.add_patch(rect)
或者,简短的版本:
import matplotlib.pyplot as plt
from matplotlib.patches import Rectangle
from PIL import Image
# Display the image
plt.imshow(Image.open('stinkbug.png'))
# Add the patch to the Axes
plt.gca().add_patch(Rectangle((50,100),40,30,linewidth=1,edgecolor='r',facecolor='none'))
import matplotlib.pyplot as plt
import matplotlib.patches as patches
from PIL import Image
import numpy as np
im = np.array(Image.open('stinkbug.png'), dtype=np.uint8)
# Create figure and axes
fig,ax = plt.subplots(1)
# Display the image
ax.imshow(im)
# Create a Rectangle patch
rect = patches.Rectangle((50,100),40,30,linewidth=1,edgecolor='r',facecolor='none')
# Add the patch to the Axes
ax.add_patch(rect)
plt.show()
你需要使用补丁。
不需要子块,pyplot可以显示PIL图像,因此可以进一步简化:
或者,简短的版本:
可以将^{} 面片添加到matplotlib轴。
例如(使用教程here中的图像):
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