标签:https tde catch video NPU 直接 collect create object
很多都是C#调用window API 发送SendMessage,实现操作摄像头,但是C#调用window API的时候因为驱动的问题,总是弹出视频选择对话框,让人很是无语,看到大牛们有的截获到了window消息,然后模拟点击确定按钮,这是在是不敢恭维啊,还有的大牛根据API原型重写了,至于我是一只IT小小鸟了,然后在继续百度,找到了一个AForge强大的C#类库,最后终于搞定了,接下来将我拙劣的代码部分贴出来,以便同行或者需要的朋友学习交流,
首先用到AForge类库下载地址:http://www.aforgenet.com/
然后引用AForge,AForge.Controls(这个是控件,可以添加到工具箱中),AForge.Imaging,AForge.Video,AForge.Video.DirectShow;
然后直接上代码
private FilterInfoCollection videoDevices;
        private VideoCaptureDevice videoSource;
        public int selectedDeviceIndex = 0;
下面是获取设备
public FilterInfoCollection GetDevices()
        {
            try
            {
                //枚举所有视频输入设备
                videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
                if (videoDevices.Count != 0)
                {
                    LogClass.WriteFile("已找到视频设备.");
                    return videoDevices;
                }
                else
                    return null;
            }
            catch (Exception ex)
            {
                LogClass.WriteFile("error:没有找到视频设备!具体原因:" + ex.Message);
                return null;
            }
        }
选择设备,然后连接摄像头
<p> /// <summary>
        /// 连接视频摄像头
        /// </summary>
        /// <param name="deviceIndex"></param>
        /// <param name="resolutionIndex"></param>
        /// <returns></returns>
        public VideoCaptureDevice VideoConnect(int deviceIndex = 0, int resolutionIndex = 0)
        {
            if (videoDevices.Count <= 0)
                return null;
            selectedDeviceIndex = deviceIndex;
            videoSource = new VideoCaptureDevice(videoDevices[deviceIndex].MonikerString);</p><p>            return videoSource;
        }</p>
//抓图,拍照,单帧
 
public void GrabBitmap(string path)
        {
            if (videoSource == null)
                return;
            g_Path = path;
            videoSource.NewFrame += new NewFrameEventHandler(videoSource_NewFrame);
        }
void videoSource_NewFrame(object sender, AForge.Video.NewFrameEventArgs eventArgs)
        {
            Bitmap bmp = (Bitmap)eventArgs.Frame.Clone();
            string fullPath = path + "temp\\";
            if (!Directory.Exists(fullPath))
                Directory.CreateDirectory(fullPath);
            string img = fullPath + DateTime.Now.ToString("yyyyMMdd hhmmss") + ".bmp";
            bmp.Save(img);
//如果这里不写这个,一会儿会不停的拍照,
            videoSource.NewFrame -= new NewFrameEventHandler(videoSource_NewFrame);
        }
这样就完成了操作摄像头的工作
但是发现一个问题,如果要拍照得到的照片先要处理在保存,这里就有问题了,所以需要在界面前台中添加控件,医用AForge.Controls,然后添加到工具箱,然后将VideoSourcePlayer控件拖到窗体中,想要得到单张图像处理:
Bitmap bmp = videoSourcePlayer1.GetCurrentFrame();
这样就可以拿来处理了,AForge类库是非常的强大,这里只是冰山一角,文章不足之处还请大家多多指正,欢迎提出宝贵意见和建议。谢谢。。。
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作者:ching126 
来源:CSDN 
原文:https://blog.csdn.net/chenhongwu666/article/details/40594365 
版权声明:本文为博主原创文章,转载请附上博文链接!
标签:https tde catch video NPU 直接 collect create object
原文地址:https://www.cnblogs.com/skyay/p/10264401.html