需要做个将mat转换成bitmap赋值给窗口背景的，现在问题是无法转换

using Emgu.CV;
using Emgu.CV.Structure;
using System.Drawing;
using System.Windows.Forms;

namespace Emgu4
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            Hello();
        }


        public void Hello()
        {
            Mat mat = new Mat(this.Height,this.Width,Emgu.CV.CvEnum.DepthType.Cv8U,3);
            mat.SetTo(new MCvScalar(128,128,128));
            Bitmap map = BitmapExtension.ToBitmap(mat);
            this.BackgroundImage = map;
        }
    }
}

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