使用Python在opencv中的imshow不是交互式的 [英] imshow in opencv with python is not interactive

问题描述

imshow()面临一些问题.我正在使用以下代码显示图像:

I am facing a bit of an issue with imshow(). I am displaying an image using the following code:

cv2.namedWindow("image", cv2.WINDOW_GUI_EXPANDED)
cv2.imshow("image", image)
cv2.waitKey(0)
cv2.destroyAllWindows()

(显示的窗口)

但是窗口仅显示图像，不显示RGB信息或坐标，也不放大/缩小.我看过教程，似乎人们可以在窗口弹出后立即查看所有这些内容.我尝试搜索是否有人遇到类似问题，但只找到一个答案，说我应该检查我的OpenCV版本是否为3.4+.我的版本是3.4.1，因此应该可以正常工作，但事实并非如此.有人可以帮我吗?

But the window only displays the image, it does not show RGB information or coordinates, and it does not zoom in/out. I have watched tutorials and it seems that people can view all of these things as soon as the window pops up. I tried searching to see if anyone else had a similar problem, and I only found an answer saying that I should check if my OpenCV version is 3.4+. My version is 3.4.1, so it should work fine, but it isn't. Can someone help me with this?

谢谢.

推荐答案

或者，您也可以简单地使用matplotlib库来具有缩放/坐标/RGB功能:

Alternatively, you can also simply use matplotlib library to have zoom/coordinates/RGB features:

import cv2
from matplotlib import pyplot as plt

img = cv2.imread('lena.png')
plt.imshow(img)
plt.xticks([]), plt.yticks([])
plt.show()

使用Jupyter，您可以尝试:

With Jupyter, you can try:

import cv2
from matplotlib import pyplot as plt

img = cv2.imread('lena.png')
%matplotlib qt
plt.imshow(img)
plt.xticks([]), plt.yticks([])
plt.show()

您可能需要很少的依赖项.

You may need few dependencies.

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