在Python中从opencv 3创建Rect类的实例 [英] Create instances of class Rect from opencv 3 in Python

问题描述

我想知道如何通过提供两个Point来获取opencv rect对象. C ++版本提供了这种数据结构.

I would like to know how I can get an opencv rect object by providing two Points. The c++ version provides this datastructre.

http://docs.opencv.org /java/2.4.9/org/opencv/core/Rect.html

我找不到在python中实例化rect的方法. 我尝试了cv2.Rect(p1,p2)，但是这种方法似乎不存在. 可能吗?

I cant find a way to instantiate rects in python. I tried cv2.Rect(p1,p2) but this method seems not be existent. Is it even possible?

非常感谢:)

推荐答案

以本教程为例，例如面部检测 http://docs.opencv.org/trunk/d7/d8b/tutorial_py_face_detection.html ，您会发现在Python opencv绑定中，矩形是四个坐标的元组/列表-例如faceCascade.detectMultiScale的结果就是这些的列表-基本上，使用常规的Python功能来管理它们.

Look for example at this tutorial face detection http://docs.opencv.org/trunk/d7/d8b/tutorial_py_face_detection.html and you'll see that in Python opencv bindings rectangles are tuples/lists of the four coordinates - the results of, for example, faceCascade.detectMultiScale is a list of these - basically, use normal Python capabilities to manage them.

我想您必须编写自己的重叠/区域/包含函数-并非非常困难-或在此处查看其他答案，例如

I guess you'll have to write your own overlap/area/contains functions - not terribly diificult - or see other answers here, for example Intersection and difference of two rectangles

更新-不好的是，detectMultiScale返回的矩形是(x，y，w，h)

UPDATE - my bad, the rectangles returned by detectMultiScale are (x,y,w,h)

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