Question

我正在使用Emgucv在c＃中检测整个身体。当人类坐下时，请帮助我无法察觉任何人。这就是为什么我想要检测身体的上半部分，以便当人类坐在椅子上然后可以检测到人类。我也想

算上人类

了解人体检测图像的哪个部分。

public Image<Bgr, Byte> Search(Image<Bgr, Byte> image, out long processingTime)
{
    processingTime = 0;
    Stopwatch watch;
    Rectangle[] regions;

    check if there is a compatible GPU to run pedestrian detection
    if (GpuInvoke.HasCuda)
    {  //this is the GPU version
        using (GpuHOGDescriptor des = new GpuHOGDescriptor())
        {
            des.SetSVMDetector(GpuHOGDescriptor.GetDefaultPeopleDetector());

            watch = Stopwatch.StartNew();
            using (GpuImage<Bgr, Byte> gpuImg = new GpuImage<Bgr, byte>(image))
            using (GpuImage<Bgra, Byte> gpuBgra = gpuImg.Convert<Bgra, Byte>())
            {
                regions = des.DetectMultiScale(gpuBgra);
            }
        }
    }
    else
    {  //this is the CPU version
    using (Emgu.CV.HOGDescriptor des = new HOGDescriptor())
    {
        des.SetSVMDetector(HOGDescriptor.GetDefaultPeopleDetector());

        watch = Stopwatch.StartNew();
        regions = des.DetectMultiScale(image);
    }
    }
    watch.Stop();

    processingTime = watch.ElapsedMilliseconds;
    LblProcessingTime.Text = processingTime.ToString();
    foreach (Rectangle pedestrain in regions)
    {
        image.Draw(pedestrain, new Bgr(Color.Red), 6);
    }
    return image;

}

Answer 1

下载并安装“haarcascade_upperbody.xml”并将其复制到bin / debug文件夹。并使用

调整代码

     Image<Gray, byte> grayframe = capture.RetrieveBgrFrame().Convert<Gray, byte>();

    static string HCSUpperBody = "haarcascade_upperbody.xml";

      var faces = grayframe.DetectHaarCascade(hcBodyDetector, 1.2, 6, HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new Size())[0];




                     foreach (var face in faces)
                     {
                         image.Draw(face.rect, new Bgr(0, double.MaxValue, 0), 3);
                     }

picturebox1.image = image.toBitmap（）;

如何检测Emgucv中HOG的身体上部（肩部和头部）

1 个答案: