C# 离线人脸识别库 ViewFaceCore

ViewFaceCore 是一个使用 C# 开发的超简单的离线人脸识别库。( 基于 SeetaFace6 )，多平台支持， 开源、免费、跨平台 (win/linux)。

支持的 .NET 版本, .NET Framework， .NET Standard, .NET / .NET Core 

简单的人脸信息检测
以 Windows x64平台 为例，一个简单的人脸检测Demo，需要先使用 nuget 安装依赖。

ViewFaceCore： .NET 核心库。

ViewFaceCore.all_models ：人脸检测的模型支持(图省事可以直接安装这个)。

ViewFaceCore.runtime.win.x64 ：Windows-x64 的本机运行时，其它平台自行选择安装，可安装多个。

ViewFaceCore.Extension.SkiaSharp：SkiaSharp图像处理扩展，ImageSharp、SkiaSharp、System.Drawing三选一。

.net 7 创建winform项目 

简单画个窗体

 主要引用nuget包 

 

 以下为源码

using ViewFaceCore.Core;
using ViewFaceCore.Model;
using ViewFaceCore;
using SkiaSharp;
using System.Drawing;
using System.Diagnostics;

namespace WinFormsApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";
        private void btnSelect_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;
            pictureBox1.ImageLocation = ofd.FileName;
            label1.Text = pictureBox1.ImageLocation;

        }
        private void btnContrast_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;
            pictureBox2.ImageLocation = ofd.FileName;
            label2.Text = pictureBox2.ImageLocation;
        }
        //人脸检测
        private void button2_Click(object sender, EventArgs e)
        {
            string msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }

            using FaceDetector faceDetector = new FaceDetector();
            using var bitmap = SKBitmap.Decode(pictureBox1.ImageLocation);
            FaceImage faceImage = bitmap.ToFaceImage();
            FaceInfo[] infos = faceDetector.Detect(faceImage);
            if (infos.Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            //Console.WriteLine("识别到的人脸数量：" + infos.Length + " 个人脸信息：\n");
            //Console.WriteLine("No.\t人脸置信度\t位置信息");
            //for (int i = 0; i < infos.Length; i++)
            //{
            //    Console.WriteLine(String.Format("{0}\t{1}\t{2}", i, infos[i].Score, infos[i].Location));
            //}
            Bitmap bitmap2 = new Bitmap(pictureBox1.Image);
            //画方框，标记人脸
            using (Graphics g = Graphics.FromImage(bitmap2))
            {
                g.DrawRectangles(new Pen(Color.Red, 2), infos.Select(p => new RectangleF(p.Location.X, p.Location.Y, p.Location.Width, p.Location.Height)).ToArray());
            }
            pictureBox1.Image = bitmap2;
        }
        //活体检测
        private void button3_Click(object sender, EventArgs e)
        {
            string msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            using var bitmap = SKBitmap.Decode(pictureBox1.ImageLocation);
            //FaceImage bitmap = new Bitmap(pictureBox1.Image).ToFaceImage();
            FaceDetector faceDetector = new FaceDetector();
            FaceLandmarker faceMark = new FaceLandmarker();
            FaceAntiSpoofing faceAntiSpoofing = new FaceAntiSpoofing();
            if (faceDetector.Detect(bitmap).Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            var info = faceDetector.Detect(bitmap).First();
            var markPoints = faceMark.Mark(bitmap, info);
            Stopwatch sw = Stopwatch.StartNew();
            sw.Start();
            var result = faceAntiSpoofing.AntiSpoofing(bitmap, info, markPoints);
            msg = "活体检测，结果：" + result.Status + "，清晰度:" + result.Clarity + "，真实度：" + result.Reality + "，耗时：" + sw.ElapsedMilliseconds + "ms";
            richTextBox1.Text += msg + "\r\n";
            Console.WriteLine(msg);
            sw.Stop();
        }
        //人脸比对
        private void button9_Click(object sender, EventArgs e)
        {
            String msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            if (pictureBox2.Image == null)
            {
                msg = "图片2不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            Stopwatch sw = Stopwatch.StartNew();
            sw.Start();
            using var faceImage0 = SKBitmap.Decode(pictureBox1.ImageLocation);
            using var faceImage1 = SKBitmap.Decode(pictureBox2.ImageLocation);

            //检测人脸信息
            FaceDetector faceDetector = new FaceDetector();
            FaceInfo[] infos0 = faceDetector.Detect(faceImage0);
            FaceInfo[] infos1 = faceDetector.Detect(faceImage1);
            if (infos0.Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                sw.Stop();
                return;
            }
            if (infos1.Length == 0)
            {
                msg = "图片2未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                sw.Stop();
                return;
            }
            //标记人脸位置
            FaceLandmarker faceMark = new FaceLandmarker();
            FaceMarkPoint[] points0 = faceMark.Mark(faceImage0, infos0[0]);
            FaceMarkPoint[] points1 = faceMark.Mark(faceImage1, infos1[0]);
            //提取特征值
            FaceRecognizer faceRecognizer = new FaceRecognizer();
            float[] data0 = faceRecognizer.Extract(faceImage0, points0);
            float[] data1 = faceRecognizer.Extract(faceImage1, points1);
            //对比特征值
            bool isSelf = faceRecognizer.IsSelf(data0, data1);
            //计算相似度
            float similarity = faceRecognizer.Compare(data0, data1);
            msg = "识别到的人脸是否为同一人：" + isSelf + "，相似度：" + similarity + "，对比耗时：" + sw.ElapsedMilliseconds + "ms";
            richTextBox1.Text += msg + "\r\n";
            Console.WriteLine(msg);
            sw.Stop();
        }
        //口罩检测
        private void button4_Click(object sender, EventArgs e)
        {
            string msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            FaceImage bitmap = SKBitmap.Decode(pictureBox1.ImageLocation).ToFaceImage();
            FaceDetector faceDetector = new FaceDetector();
            MaskDetector maskDetector = new MaskDetector();
            if (faceDetector.Detect(bitmap).Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            var info = faceDetector.Detect(bitmap).First();
            PlotMaskResult plotMaskResult = maskDetector.PlotMask(bitmap, info);
            if (plotMaskResult.Masked)
            {
                richTextBox1.Text += "口罩：是 \r\n";
            }
            else
            {
                richTextBox1.Text += "口罩：否 \r\n";
            }
            Console.WriteLine(msg);
        }
        //年龄预测
        private void button5_Click(object sender, EventArgs e)
        {
            string msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            FaceImage bitmap = SKBitmap.Decode(pictureBox1.ImageLocation).ToFaceImage();
            FaceDetector faceDetector = new FaceDetector();
            if (faceDetector.Detect(bitmap).Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            var info = faceDetector.Detect(bitmap).First();
            AgePredictor agePredictor = new AgePredictor();
            FaceLandmarker faceMark = new FaceLandmarker();
            var markPoints = faceMark.Mark(bitmap, info);
            int age = agePredictor.PredictAge(bitmap, markPoints);
            richTextBox1.Text += "年龄：" + age + " \r\n";
            Console.WriteLine(msg);
        }
        //性别预测
        private void button6_Click(object sender, EventArgs e)
        {
            string msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            FaceImage bitmap = SKBitmap.Decode(pictureBox1.ImageLocation).ToFaceImage();
            FaceDetector faceDetector = new FaceDetector();
            if (faceDetector.Detect(bitmap).Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            var info = faceDetector.Detect(bitmap).First();
            GenderPredictor genderPredictor = new GenderPredictor();
            FaceLandmarker faceMark = new FaceLandmarker();
            var markPoints = faceMark.Mark(bitmap, info);
            Gender gender = genderPredictor.PredictGender(bitmap, markPoints);
            richTextBox1.Text += "性别：" + gender + " \r\n";
            Console.WriteLine(msg);
        }
        //眼睛状态
        private void button7_Click(object sender, EventArgs e)
        {
            string msg = "";
            if (pictureBox1.Image == null)
            {
                msg = "图片1不能为空";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            FaceImage bitmap = SKBitmap.Decode(pictureBox1.ImageLocation).ToFaceImage();
            FaceDetector faceDetector = new FaceDetector();
            if (faceDetector.Detect(bitmap).Length == 0)
            {
                msg = "图片1未检测到人脸";
                richTextBox1.Text += msg + "\r\n";
                return;
            }
            var info = faceDetector.Detect(bitmap).First();
            EyeStateDetector eyeStateDetector = new EyeStateDetector();
            FaceLandmarker faceMark = new FaceLandmarker();
            var markPoints = faceMark.Mark(bitmap, info);
            EyeStateResult eyeStateResult = eyeStateDetector.Detect(bitmap, markPoints);
            richTextBox1.Text += "眼睛状态：" + eyeStateResult + " \r\n";
            Console.WriteLine(msg);
        }
    }
}

　　运行结果 ：

人脸检测：

 活体检测：

 人脸检测：