BeagleBone，OpenCV和网络摄像头问题 [英] BeagleBone, OpenCV and webcam issue

问题描述

我一直在尝试 BeagleBone 使用 OpenCV 和一个捕获摄像头，但我不能设法做到目前为止。我使用 Logitech C270 网络摄像头。这是我到目前为止做的：

I've been trying to get BeagleBone work with OpenCV and a capture camera, but I couldn't manage to do it so far. I use Logitech C270 webcam. Here is what I did so far:

1. 我安装了OpenCV二进制文件，试过我的相机。捕获没有工作。我从Git下载了最新版本并编译。


2. Ångström预装了OpenCV，我直接尝试连接网络摄像头。但我有选择超时错误，当我保存捕获的图像，它都是黑色的。


3. 我从Ångström删除了OpenCV（ opkg remove opencv 和 opencv-dev ）。它说它工作，但图书馆仍然在 / usr 。所以我手动删除它们并复制我在主机中交叉编译的库。但现在，我甚至不能连接到相机。 Capture再次返回null。

1. I installed OpenCV binaries and tried my camera. Capture didn't work. I downloaded the latest version from Git and compiled it. Then it worked on my desktop.
2. Since Ångström have pre-installed OpenCV, I directly tried to connect the webcam. But I had "select timeout" errors and when I saved the captured image, it was all black.
3. I deleted OpenCV from Ångström (opkg remove opencv and opencv-dev). It said it worked, but libraries were still in /usr. So I deleted them manually and copied libraries that I cross-compiled in my host. But now, I cannot even connect to camera. Capture returns null again.

我检查了opkg列表安装，仍然列出了OpenCV 2.4。但是， / usr / lib 中的库和include是我复制的。我如何解决这个问题？

I checked opkg list-installed, still OpenCV 2.4 is listed there. However, libraries in /usr/lib and include are the ones that I copied. How can I fix this problem?

注意：Webcam可由Ångström识别，

Note: Webcam is recognized by Ångström, and dmesg shows successful connection to the webcam.

推荐答案

安装时出现错误的Linux本身。我重新编译了最新的Ångström并安装到BeagleBone。一切工作正常，因为它应该。看起来有时候是更好的采取艰难的方式。

It seems something was wrong on installation of Linux itself. I re-compiled the latest Ångström and installed it to BeagleBone. Everything worked fine as it should. It seems sometimes it's better to take the hard way.

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