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今天要实现模板类，查找一些资料，发现非常有意思，估计对大家有帮助，所以共享一下。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Emgu.CV;

namespace VSL.Plugin.TrackingSystem.GaitAnalysisTrackingSystem
{

    /// <summary>
    /// 背景估计模型
    /// </summary>
    /// <typeparam name="TColor"></typeparam>
    /// <typeparam name="TDepth"></typeparam>
    public class BackgroundEstimatorModel<TColor, TDepth> where TColor : Emgu.CV.IColor, new()
    {
        protected int _bufferMax;//缓冲区最大的尺寸
        //背景缓冲区
        protected Queue<Emgu.CV.Image<TColor, TDepth>> _buffer = new Queue<Emgu.CV.Image<TColor, TDepth>>();
        protected Emgu.CV.Image<TColor, TDepth> _background = null;

        public BackgroundEstimatorModel()
        {

        }

        /// <summary>
        /// 更新背景
        /// </summary>
        /// <param name="image"></param>
        public virtual void Update(Emgu.CV.Image<TColor, TDepth> image)
        {
            if (_buffer.Count == _bufferMax)//达到缓冲队列的最大值，则出队列
            {
                _buffer.Dequeue();//出队列
            }
            _buffer.Enqueue(image);//新的帧入队列

            //创建背景图像
            if (_background == null)
                _background = new Emgu.CV.Image<TColor, TDepth>(image.Size);

            foreach (var frame in _buffer)
            {
                //更具不同的算法更新背景

            }
        }
    }

    /// <summary>
    /// 灰度背景模型
    /// </summary>
    public class GrayBackgroundEstimatorModel : BackgroundEstimatorModel<Gray, Byte>
    {
        //只支持灰度背景
        public override void Update(Image<Gray, byte> image)
        {
            if (_buffer.Count == _bufferMax)//达到缓冲队列的最大值，则出队列
            {
                _buffer.Dequeue();//出队列
            }
            _buffer.Enqueue(image);//新的帧入队列

            //创建背景图像
            if (_background == null)
                _background = new Emgu.CV.Image<Gray, Byte>(image.Size);

            foreach (var frame in _buffer)
            {
                //更具不同的算法更新背景

            }
        }

    }
    public enum BG_EISTIMATOR_TYPE
    {
        /// <summary>
        ///
        /// </summary>
        FGD_STAT_MODEL,
        /// <summary>
        /// Gaussian background model
        /// </summary>
        GAUSSIAN_BG_MODEL,

        /// <summary>
        /// Move Forward
        /// </summary>
        MOVEFORWARD
    }
}