Question

我有一个窗口应用程序，它将检测多个面部并捕获面部并保存为图像。我使用EMGU CV进行人脸检测，我从示例代码和教程中学习。当需要将面部捕获为经过训练的数据集时，它只能存储一个面部，尽管它检测到两个面部。我尝试修改代码，但似乎没有按预期工作。以下是代码：

 gray = grabber.QueryGrayFrame().Resize(320, 240, 
 Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);

MCvAvgComp[][] facesDetected = gray.DetectHaarCascade(
            face,
            1.2,
            10,
            Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING,
            new Size(20, 20));

foreach (MCvAvgComp f in facesDetected[0])
{
    TrainedFace = currentFrame.Copy(f.rect).Convert<Gray, byte>();

    TrainedFace = result.Resize(100, 100, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);
    trainingImages.Add(TrainedFace);

    for (int i = 1; i < trainingImages.ToArray().Length + 1; i++)
    {
        trainingImages.ToArray()[i - 1].Save(Application.StartupPath + "/TrainedFaces/face" + i + ".bmp");

    }
}

当检测到2个面时，foreach循环将循环两次，但是面部保存是相同的。知道出了什么问题吗？

Answer 1

请尝试以下方式

对于检测到的每个脸部，您必须将其添加到训练图像中并且你需要将它循环到每个循环的一侧

gray = grabber.QueryGrayFrame().Resize(320, 240, 
Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);

MCvAvgComp[][] facesDetected = gray.DetectHaarCascade(
        face,
        1.2,
        10,
        Emgu.CV.CvEnum.HAAR_DETECTION_TYPE.DO_CANNY_PRUNING,
        new Size(20, 20));

foreach (MCvAvgComp f in facesDetected[0])
{
TrainedFace = currentFrame.Copy(f.rect).Convert<Gray, byte>();

TrainedFace = result.Resize(100, 100, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);
trainingImages.Add(TrainedFace);
}

 for (int i = 1; i < trainingImages.ToArray().Length + 1; i++)
{
    trainingImages.ToArray()[i - 1].Save(Application.StartupPath + "/TrainedFaces/face" + i + ".bmp");

 }

我认为for循环可以改为

int i=1;
foreach(TrainedFace Tface in trainingImages)
  {
   Tface.Save(Application.StartupPath + "/TrainedFaces/face" + i + ".bmp")
    i++;
   }

请尝试这种方式，它可能会有效..

EMgucv保存从网络摄像头检测到的多个脸部

1 个答案: