C++ (Cpp) temp_camera示例

示例#1

文件： qt-jetson-zed-opencv-nosdk.cpp 项目： Myzhar/qt-jetson-zed-opencv-nosdk

void QtOpenCVZedDemo::enumCameras()
{
    ui->comboBox_cameras->clear();

    if(mCapture.isOpened())
        mCapture.release();

    cv::VideoCapture temp_camera;
    int maxTested = 10;

    bool found = false;

    for (int i = 0; i < maxTested; i++)
    {
        cv::VideoCapture temp_camera(i);
        bool res = temp_camera.isOpened();
        temp_camera.release();
        if (res)
        {
            found = true;
            ui->comboBox_cameras->addItem( tr("%1").arg(i) );
        }
    }

    if( found )
        ui->comboBox_cameras->setCurrentIndex(0);
    else
        ui->comboBox_cameras->setCurrentIndex(-1);
}

示例#2

文件： camera_capture.cpp 项目： dudeofea/eye-cursor

//Get the number of cameras available
int countCameras(){
	VideoCapture temp_camera;
	int maxTested = 10;
	for (int i = 0; i < maxTested; i++){
		VideoCapture temp_camera(i);
		bool res = (!temp_camera.isOpened());
		temp_camera.release();
		if (res){
			return i;
		}
	}
	return maxTested;
}