[Emgu]判断一张图片是否在另一张图片中

using Emgu.CV;
using Emgu.CV.Structure;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace EmguDemo1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //原图
            Image<Bgr, byte> source = new Image<Bgr, byte>(@"C:\emguDemo1\source.png");
            //子图
            Image<Bgr, byte> subPicPath = new Image<Bgr, byte>(@"C:\emguDemo1\subpic.JPG");

            //判断子图是否在原图中
            if(source.MatchTemplate(subPicPath, Emgu.CV.CvEnum.TemplateMatchingType.CcoeffNormed) != null)
            {
                MessageBox.Show("true");
            }
            else
            {
                MessageBox.Show("false");
            }
      
        }
    }
}