C# を使用してターゲット認識アルゴリズムを作成する方法

public Bitmap ConvertToGrayScale(Bitmap image)
{
    Bitmap grayImage = new Bitmap(image.Width, image.Height);
    for (int y = 0; y < image.Height; y++)
    {
        for (int x = 0; x < image.Width; x++)
        {
            Color color = image.GetPixel(x, y);
            int grayValue = (int)(color.R * 0.299 + color.G * 0.587 + color.B * 0.114);
            grayImage.SetPixel(x, y, Color.FromArgb(color.A, grayValue, grayValue, grayValue));
        }
    }
    return grayImage;
}

public VectorOfKeyPoint ExtractSURFFeatures(Bitmap image)
{
    Image<Bgr, byte> img = new Image<Bgr, byte>(image);
    SURFDetector surf = new SURFDetector(500, false);
    VectorOfKeyPoint keyPoints = new VectorOfKeyPoint();
    Matrix<float> descriptors = surf.DetectAndCompute(img, null, keyPoints);
    return keyPoints;
}

public VectorOfVectorOfDMatch MatchFeatures(VectorOfKeyPoint queryKeyPoints, Matrix<float> queryDescriptors, VectorOfKeyPoint trainKeyPoints, Matrix<float> trainDescriptors)
{
    FlannBasedMatcher matcher = new FlannBasedMatcher();
    VectorOfVectorOfDMatch matches = new VectorOfVectorOfDMatch();
    matcher.Add(queryDescriptors);
    matcher.KnnMatch(trainDescriptors, matches, 2);
    return matches;
}

public bool RecognizeTarget(VectorOfVectorOfDMatch matches, int matchThreshold)
{
    int goodMatches = 0;
    for (int i = 0; i < matches.Size; i++)
    {
        if (matches[i].Size >= 2 && matches[i][0].Distance < matchThreshold * matches[i][1].Distance)
        {
            goodMatches++;
        }
    }
    if (goodMatches >= matchThreshold)
        return true;
    else
        return false;
}