如何在python的感兴趣区域周围绘制矩形

问题描述

我在python代码中遇到了import cv的问题.

I'm having trouble with import cv in my python code.

我的问题是我需要在图像的感兴趣区域周围绘制一个矩形.如何在python中完成?我正在执行对象检测，并想在我相信在图像中找到的对象周围绘制一个矩形.

My issue is I need to draw a rectangle around regions of interest in an image.How can this be done in python? I'm doing object detection and would like to draw a rectangle around the objects I believe I've found in the image.

推荐答案

请不要尝试使用旧的cv模块，请使用cv2:

please don't try with the old cv module, use cv2:

import cv2

cv2.rectangle(img, (x1, y1), (x2, y2), (255,0,0), 2)


x1,y1 ------
|          |
|          |
|          |
--------x2,y2

[edit]追加以下后续问题:

[edit] to append the follow-up questions below:

cv2.imwrite("my.png",img)

cv2.imshow("lalala", img)
k = cv2.waitKey(0) # 0==wait forever

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