public float KhoangCach(tPoint b)
        {
            float result = 0;

            for (int i = 0; i < Vector.Count; i++)
            {
                result += (float)Math.Pow(Vector[i] - b.Vector[i], 2);
            }
            return((float)Math.Sqrt(result));
        }
        public void UpdateCenter(List <tPoint> lst)
        {
            if (lst == null || lst.Count == 0)
            {
                return;
            }
            tPoint save = new tPoint();

            save.ZeroVector();
            foreach (var item in lst)
            {
                save += item;
            }
            for (int i = 0; i < save.Vector.Count; i++)
            {
                save.Vector[i] = (byte)(save.Vector[i] / lst.Count);
            }
            this.Vector = save.Vector;
        }