效果

项目

代码

using OpenCvSharp;
using System;
using System.Drawing;
using System.Windows.Forms;

namespace OpenCvSharp_Demo
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        string image_path = "";

        private void Form1_Load(object sender, EventArgs e)
        {
            image_path = "1.jpg";
            pictureBox1.Image = new Bitmap(image_path);
        }

        private void button2_Click(object sender, EventArgs e)
        {

            Mat gray = new Mat(image_path, ImreadModes.Grayscale);

            Mat binary = new Mat();

            Cv2.AdaptiveThreshold(~gray, binary, 255, AdaptiveThresholdTypes.MeanC, ThresholdTypes.Binary, 15, -2);

            Mat kernel = Cv2.GetStructuringElement(MorphShapes.Rect, new OpenCvSharp.Size(4, 4), new OpenCvSharp.Point(-1, -1));

            //开运算
            Mat dst = new Mat();
            Cv2.MorphologyEx(binary, dst, MorphTypes.Open, kernel);

            pictureBox2.Image = new Bitmap(dst.ToMemoryStream());

        }

    }
}

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