使用OpenCv检测PC上的网络摄像头/摄像机数量 [英] Detect the number of webcams/cameras on PC with OpenCv

问题描述

我正在制作一个运行多个网络摄像头/摄像机的应用程序.我无法设法检测使用OpenCV拥有的网络摄像头的数量，以阻止其中有多个子网络摄像头的大显示窗口.

I'm making an application running multiple webcams/cameras. I cannot manage to detect the number of webcams I have with OpenCV to arrage a big display window with multiple sub webcams in it.

有人可以帮助我吗?

我搜索过openCV柳编车库，但失败了

I've searched openCV willowgarage but failed

谢谢

推荐答案

我不认为OpenCV提供任何功能来告诉您检测到多少台摄像机.一种简单且跨平台的方法是在循环中以0到10调用VideoCapture::open()，并在每次迭代中检查VideoCapture::isOpened()是否返回true.这样，您就可以知道摄像机的索引以及您拥有多少个摄像机.

I don't think OpenCV provides any function to tell how many cameras are detected. An easy and cross-platform way is to call VideoCapture::open() in a loop with say 0 to 10, and in each iteration check if VideoCapture::isOpened() returns true. This way you know the index of the cameras and how many of them you've got.

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