从Macbook Pro iSight与Opencv捕获 [英] Capturing from Macbook Pro iSight with Opencv

问题描述

我尝试使用OpenCV 2.4.6从Macbook Pro的iSight捕获帧，并在Xcode上使用Apple LLVM 4.2编译器。

I'm trying to capture frames from a Macbook Pro's iSight using OpenCV 2.4.6, and built using the Apple LLVM 4.2 compiler on Xcode.

但是，我不接收任何帧。通常我设置一个while循环，直到框架已满，但下面的一个运行〜30秒没有结果。如何调试此功能？

However, I don't receive any frames. Usually I set up a while loop to run until the frame is full, but the one below runs for ~30 seconds with no result. How can I debug this?

void testColourCapture() {

    cv::VideoCapture capture = cv::VideoCapture(0); //open default camera
    if(!capture.isOpened()) {
        fprintf( stderr, "ERROR: ColourInput capture is NULL \n" );
    }
    cv::Mat capFrame;

    int frameWaits = 0;
    while (capFrame.empty()) {
        capture.read(capFrame);
        //capture >> capFrame;
        cvWaitKey(30);
        frameWaits++;
        std::cout << "capture >> capFrame " << frameWaits << "\n";
        if (frameWaits > 1000) {
            break;
        }
    }
    imshow("capFrame", capFrame);

}

我确保它不是多线程的。此外，capture.isOpened总是返回true。

I have ensured it is not multi-threaded. Also, capture.isOpened is always returning true.

编辑：似乎其他人遇到了这个问题： OpenCV不会从MacBook Pro iSight捕获

It appears others have had this problem: OpenCV wont' capture from MacBook Pro iSight

编辑：我的安装程序opencv is：

My procedure for installing opencv was:

$ sudo port selfupdate

$ sudo port selfupdate

$ sudo port install opencv

$ sudo port install opencv

然后，我将libopencv_core.dylib，libopencv_highgui.dylib，libopencv_imgproc.dylib和libopencv_video.dylib拖到我的Xcode项目的Frameworks文件夹中，从/ opt / local / lib

Then, I dragged libopencv_core.dylib, libopencv_highgui.dylib, libopencv_imgproc.dylib and libopencv_video.dylib into the Frameworks folder of my Xcode project, from /opt/local/lib

推荐答案

OpenCV 2.4.6已损坏，不能与iSight相机配合使用。所以安装2.4.5。我为此编写了一个逐步指南： http://accidentalprogramming.blogspot.ch/2013/10/opencv-installation-on-mac-os-x.html

OpenCV 2.4.6 is broken and doesn't work with the iSight camera. So install 2.4.5 instead. I've written a step-for-step guide for this: http://accidentalprogramming.blogspot.ch/2013/10/opencv-installation-on-mac-os-x.html

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