如何找到腹部的周长，二头肌。。有关节和kinectv2？

Question

我想使用kinect-v2、c#或python查找腹部周长、肱二头肌等。我用.csv格式写下每帧中每个关节的X，Y，Z坐标。我对此有点困惑

我用这种方法得到关节的坐标

Dictionary<JointType, Point> jointPoints = new Dictionary<JointType, Point>();

    Joint baseSpine = joints[JointType.SpineBase];
    Joint midSpine = joints[JointType.SpineMid];
    Joint neck = joints[JointType.Neck];

   using (StreamWriter writer = new StreamWriter(fileName, true))
                            {
                                frameNo++;
                                writer.Write(st(frameNo) + ";" + st(baseSpine.Position.X) + ";" + st(baseSpine.Position.Y) + ";" + st(baseSpine.Position.Z) + ";" + st(midSpine.Position.X) + ";" + st(midSpine.Position.Y) + ";" + st(midSpine.Position.Z) 
                            }

你能给我一些关于如何做或如何前进的建议吗

我还想得到屏幕上每个像素的RGB，X，Y，Z坐标来创建点云，但这是另一个主题