Question

我尝试在Ubuntu中使用OpenCV 3.1来连接Webcam。我的计划如下。

void main(){

    VideoCapture camera(0);
    Mat frame;

    while(true){
        camera >> frame;
        imshow("test", frame);
        int key = waitKey(10);
        if(key == 27){
            break;
        }
    }

    return 0;
}

错误是

GStreamer Plugin: Embedded video playback halted; module v4l2src0 reported: Devi
ce '/dev/video0' cannot capture at 1280x720
OpenCV Error: Unspecified error (GStreamer: unable to start pipeline
) in cvCaptureFromCAM_GStreamer, file /home/nn/Softwares/opencv/opencv/modules
/videoio/src/cap_gstreamer.cpp, line 818
terminate called after throwing an instance of 'cv::Exception'
  what():  /home/nn/Softwares/opencv/opencv/modules/videoio/src/cap_gstreamer.
cpp:818: error: (-2) GStreamer: unable to start pipeline
 in function cvCaptureFromCAM_GStreamer

Answer 1

这是一个使用OpenCV 4+的golang存储库，它可以在Ubuntu 19.10和golang 1.13.4上运行网络摄像头和其他opencv玩具

//  https://github.com/hybridgroup/gocv

package main

import (
    "gocv.io/x/gocv"
)

func main() {
    webcam, _ := gocv.OpenVideoCapture(0)
    window := gocv.NewWindow("Hello")
    img := gocv.NewMat()

    for {
        webcam.Read(&img)
        window.IMShow(img)
        window.WaitKey(1)
    }
}

使用OpenCV显示网络摄像头

1 个答案: