C# 如何应用OpenCvSharp FitLine

我正在使用C语言，无法找到如何应用FitLine方法

public static void Apply(Bitmap bitmap)
{
    using (Mat source = bitmap.ToMat())
    {
        var output = new List<OpenCvSharp.CPlusPlus.Vec4f>(); // I don't know which variable is accepted.
        Cv2.FitLine(source, OutputArray.Create(output), DistanceType.L2, 0, 0.01, 0.01);
        Debug.WriteLine(output);
    }
}

---

如何正确应用FitLine？

我刚刚基于此url模拟了下面的测试，它似乎可以工作。此示例使用OpenCvSharp 3.1

列表点=新列表； 点。添加新点2F3、3； 点。添加新点2F4，4； 点。添加新点2F5、5； Line2D line=Cv2.FitLinepoints，DistanceTypes.L2,0,0.01,0.01；

    using (Mat source = bitmap.ToMat())
    {
        var input = new List<OpenCvSharp.CPlusPlus.Point2f>();
        for (int i = 0; i < source.Width; i++)
        {
            for (int j = 0; j < source.Height; j++)
            {
                if (source.At<byte>(i, j) > 0)
                    input.Add(new Point2f(i, j));
            }
        }
        var output = new List<OpenCvSharp.CPlusPlus.Vec4f>();
        Cv2.FitLine(InputArray.Create(input), OutputArray.Create(output), DistanceType.L2, 0, 0.01, 0.01);
        Debug.WriteLine(output);
        return source.ToBitmap();
    }