[C#][原创]利用OpencvSharp轻松完成人脸检测

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; using OpenCvSharp;

namespace opencv人脸检测 {     public partial class Form1 : Form     {         public Form1()         {             InitializeComponent();         }

        private void Button1_Click(object sender, EventArgs e)         {             string xmlFileName= Application.StartupPath+"\\haarcascade_frontalface_alt.xml";//这个可以在Github下载             string imageFileName= Application.StartupPath + "\\tt.jpg";             OpenCvSharp.CascadeClassifier cascadeClassifier = new CascadeClassifier(xmlFileName);             Mat image = Cv2.ImRead(imageFileName);            Rect[] rect= cascadeClassifier.DetectMultiScale(image);             pictureBox1.Image = DrawRect(imageFileName,rect);         }

        public Bitmap DrawRect(string imageFileName,Rect[] rect)         {             Bitmap bmp = new Bitmap(imageFileName);             Graphics g = Graphics.FromImage(bmp);             for(int i=0;i<rect.Length;i++)             {                 g.DrawRectangle(new Pen(Color.Red,3),rect[i].Left,rect[i].Top,rect[i].Width,rect[i].Height);             }             g.Dispose();             return bmp;         }     } }

结果：