Windows中OpenCV imshow中的缩放功能 [英] Zooming functionality in OpenCV imshow in Windows

问题描述

在Ubuntu中，OpenCV的imshow函数具有一个窗口，其中提供了不同的选项，例如放大，缩小，平移窗口等，

In Ubuntu, OpenCV's imshow function has a window where different options such as zoom in, zoom out, pan window, etc, are available, like this:

但是，在Windows中，这些功能不存在.在特殊情况下，我需要在Windows上部署OpenCV代码，而用户则需要放大图像的一部分.

However, in Windows, these features are absent. I have a particular case where I need to deploy my OpenCV code on Windows, where the user needs to zoom into parts of the image.

在Windows中也可以访问/添加这些功能吗?

Is there any way to access/add these functionalities in Windows also?

推荐答案

请参见 https://gist. github.com/BartG95/1ce8ba1e9c25ec3698d1

似乎是一个较长的过程，因此您可以改用matplotlib的pyplot函数(使用Qt).您需要先应用此oneliner(请参见

appears to be a longer procedure though, so you could instead switch to matplotlib's pyplot function (uses Qt). you need to apply this oneliner before (see Extracting a region from an image using slicing in Python, OpenCV for details):

import cv2
import matplotlib.pyplot as plt

image = cv2.imread("~\\imagedir\\image.jpg")
plt_image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
imgplot = plt.imshow(plt_image)

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