OpenCvSharp 人脸捕捉

 

效果

 

 

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VideoCapture video = new VideoCapture();     video.Open(0); //电脑默认自带摄像头为0     while (true)     {         Mat src = new Mat();         if (!video.Read(src))         {             break;         }         Mat grayImage = new Mat();         Cv2.CvtColor(src, grayImage, ColorConversionCodes.BGR2GRAY); //图形转成黑白色分析更明显         Rect[] faces = cascade.DetectMultiScale(         image: grayImage,         scaleFactor: 1.1,         minNeighbors: 1,         flags: HaarDetectionTypes.DoRoughSearch | HaarDetectionTypes.ScaleImage,         minSize: new OpenCvSharp.Size(30, 30)          );         if (faces.Length > 0) //识别到人脸           foreach (Rect face in faces)               Cv2.Rectangle(src, face, new Scalar(0, 255, 0), 2); //画框                       Cv2.ImShow("Demo", src);         Cv2.WaitKey(1);         src.Release(); //释放       }         Cv2.DestroyAllWindows();

　　添加文字

  Cv2.Rectangle(src, face, new Scalar(0, 255, 0), 1);
  Cv2.PutText(src, name, new OpenCvSharp.Point(face.X, face.Y),HersheyFonts.HersheySimplex, 3, Scalar.Blue);