效果
项目
代码
using OpenCvSharp;
using System;
using System.Drawing;
using System.Windows.Forms;
namespace OpenCvSharp_实现迷宫解密
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
pictureBox1.Image = new Bitmap("test.png");
}
private void button1_Click(object sender, EventArgs e)
{
//读取图片
Mat src = Cv2.ImRead("test.png");
//BGR2GRAY
Mat gray = new Mat();
Cv2.CvtColor(src, gray, ColorConversionCodes.BGR2GRAY);
//Cv2.ImShow("gray", gray);
//1、对图像进行二值化处理
//反转 产生一个二进制的图像与白色的墙壁和黑色的背景
Mat thresh = new Mat();
Cv2.Threshold(gray, thresh, 127, 255, ThresholdTypes.BinaryInv);
// Cv2.ImShow("thresh", thresh);
//2、对二值化后的图像进行轮廓检测并标注
OpenCvSharp.Point[][] contours;
HierarchyIndex[] hierarchly;
Cv2.FindContours(thresh, out contours, out hierarchly, RetrievalModes.External, ContourApproximationModes.ApproxNone);
Mat dc = Mat.Zeros(src.Size(), MatType.CV_8UC1);
Cv2.DrawContours(dc, contours, 0, new Scalar(255, 255, 255), 6);
//3、对图像阈值进行处理
Cv2.Threshold(dc, thresh, 240, 255, ThresholdTypes.Binary);
//Cv2.ImShow("thresh2", thresh);
//4、对图像进行扩展操作
/*
扩张是数学形态领域的两个基本操作者之一,另一个是侵蚀。它通常应用于二进制图像,但有一些版本可用于灰度图像。
操作者对二进制图像的基本效果是逐渐扩大前景像素区域的边界(通常为白色像素)。因此,前景像素的面积大小增加,而这些区域内的孔变小。
*/
Mat kernel = Mat.Ones(10, 10, MatType.CV_8UC1);
Mat dilation = new Mat();
Cv2.Dilate(thresh, dilation, kernel);
//Cv2.ImShow("dilation", dilation);
//5、对图像进行侵蚀操作
/*
侵蚀是第二个形态运算符。它也适用于二进制图像。操作者对二进制图像的基本效果是消除前景像素区域的边界(通常为白色像素)。
因此,前景像素的面积缩小,并且这些区域内的孔变大。
*/
Mat erosion = new Mat();
Cv2.Erode(dilation, erosion, kernel);
//Cv2.ImShow("erosion", erosion);
//6、分迷宫通道找出路径
Mat diff = new Mat();
Cv2.Absdiff(dilation, erosion, diff);
Mat[] channels = Cv2.Split(src);
channels[0] &= ~diff;
channels[1] &= ~diff;
channels[2] |= diff;
Mat dst = new Mat();
Cv2.Merge(channels, dst);
//Cv2.ImShow("solution", dst);
pictureBox2.Image = new Bitmap(dst.ToMemoryStream());
}
}
}
Demo下载