asp.net中wpf aforge获取边缘点

时间：2022-06-25 03:32:53 编辑：袖梨来源：一聚教程网

最近接触的项目，使用了大量图片和视频操作，其中wpf aforge的使用遇到很多问题。本站将慢慢和大家分享

1、获取边缘点方法：

///

/// 边缘点越多，图像越清晰
///

        ///
        ///
        public int Get边缘点数量(System.Drawing.Bitmap source)
        {
            try
            {
                AForge.Imaging.SusanCornersDetector mcd = new AForge.Imaging.SusanCornersDetector();
                List corners = mcd.ProcessImage(source);
                return corners.Count();
            }
            catch
            {
                AForge.Imaging.MoravecCornersDetector mcd = new AForge.Imaging.MoravecCornersDetector();
                List corners = mcd.ProcessImage(source);
                return corners.Count();
            }
        }
2、使用aforge自带的动态视频展示视频

///

/// 加载默认设备
///

        public void cameraOpen()
        {

            CloseCaptureDevice();
            // 设定初始视频设备
            FilterInfoCollection videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            if (videoDevices.Count > 0)
            {
                for (int i = 0; i < videoDevices.Count; i++)
                {
                    if (videoDevices[i].Name.IndexOf("YW") > -1)
                    {
                        DeviceMoniker = videoDevices[i].MonikerString;
                        break;
                    }
                }
                //DeviceMoniker = videoDevices[0]..Name.Contains("YW").MonikerString;
                // UsbVideo = new VideoCaptureDevice(videoDevices[0].MonikerString);
                // camera_Chemistry.vp.videoMonkeyName = videoDevices[0].MonikerString;
                UsbVideo = new VideoCaptureDevice(DeviceMoniker);
                camera_Chemistry.vp.videoMonkeyName = DeviceMoniker;
                //sourcePlayer.NewFrame -= new AForge.Controls.VideoSourcePlayer.NewFrameHandler(videoSourcePlayer_NewFrame);
                //sourcePlayer.NewFrame += new AForge.Controls.VideoSourcePlayer.NewFrameHandler(videoSourcePlayer_NewFrame);
                UsbVideo.VideoResolution = UsbVideo.VideoCapabilities.Where(a => a.FrameSize.Width == 640 && a.FrameSize.Height == 480).FirstOrDefault();
                //UsbVideo.SnapshotFrame += UsbVideo_SnapshotFrame;
                UsbVideo.NewFrame += UsbVideo_NewFrame; //截图
                sourcePlayer.VideoSource = UsbVideo;
               // sourcePlayer.Start();
            }
            else
            {
                //button_Play.IsEnabled = false;
                //button_Capture.IsEnabled = false;
            }
            //设置相机摄像机的属性，亮度对比度
            GaobeijingCamera();
            this电机状态 = 1; //5
        }

        private void CloseCaptureDevice()
        {
            if (sourcePlayer != null && sourcePlayer.VideoSource != null)
            {
                if (sourcePlayer.IsRunning)
                {
                    sourcePlayer.SignalToStop();
                    sourcePlayer.WaitForStop();
                    sourcePlayer.Stop();
                }
                sourcePlayer.VideoSource = null;
                if (UsbVideo.ProvideSnapshots)
                {
                    // UsbVideo.SnapshotFrame -= new NewFrameEventHandler(UsbVideo_SnapshotFrame);
                }
            }
        }
得到图片：

private void UsbVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            // ShowSnapshot((System.Drawing.Bitmap)eventArgs.Frame); //.Clone()
            ShowSnapshot(eventArgs);
}

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