使用opencv进行肤色分割，可以划分出完整手型，并可测量出手掌重心，还可以进行腐蚀和膨胀去噪点。学习opencv不可多得的例子-Use opencv skin color segmentation, can be divided into full-hand, and can measure the palm center of gravity, can also be expanded to corrosion and noise. A rare example of learning op