老规矩，先看效果
效果

项目

说明
Facefusion是一款最新的开源AI视频/图片换脸项目。是原来ROOP的项目的延续。项目官方介绍只有一句话，下一代换脸器和增强器。换脸无论在国内还是国外，争议都非常大。技术无罪，但怕有心人。我还没想好要不要把代码分享出来，你们先不急找我要。先欣赏一下，就当开眼界了。

参考
https://github.com/facefusion/facefusion
https://github.com/hpc203/facefusion-onnxrun
调用代码

using OpenCvSharp;
using OpenCvSharp.Extensions;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;

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

        string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";

        string startupPath = "";

        string source_path = "";
        string target_path = "";

        Yolov8Face detect_face;
        Face68Landmarks detect_68landmarks;
        FaceEmbdding face_embedding;
        SwapFace swap_face;
        FaceEnhance enhance_face;

        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;

            pictureBox1.Image = null;

            source_path = ofd.FileName;
            pictureBox1.Image = new Bitmap(source_path);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;

            pictureBox2.Image = null;

            target_path = ofd.FileName;
            pictureBox2.Image = new Bitmap(target_path);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (pictureBox1.Image == null || pictureBox2.Image == null)
            {
                return;
            }

            pictureBox3.Image = null;
            Application.DoEvents();

            Mat source_img = Cv2.ImRead(source_path);
            Mat target_img = Cv2.ImRead(target_path);

            List<Bbox> boxes;
            boxes = detect_face.detect(source_img);

            int position = 0; //一张图片里可能有多个人脸，这里只考虑1个人脸的情况
            //List<Point2f> face_landmark_5of68 = new List<Point2f>();
            List<Point2f> face68landmarks = detect_68landmarks.detect(source_img, boxes[position]);

            //绘图
            //Cv2.Rectangle(source_img, new OpenCvSharp.Point(boxes[0].xmin, boxes[0].ymin), new OpenCvSharp.Point(boxes[0].xmax, boxes[0].ymax), new Scalar(255, 0, 0), 2);
            //foreach (Point2f item in face68landmarks)
            //{
            //    Cv2.Circle(source_img, (int)item.X, (int)item.Y, 4, new Scalar(0, 255, 0), -1);
            //}
            //Cv2.ImShow("source_img", source_img);

            List<float> source_face_embedding = face_embedding.detect(source_img, face68landmarks);

            boxes = detect_face.detect(target_img);

            position = 0; //一张图片里可能有多个人脸，这里只考虑1个人脸的情况
            List<Point2f> target_landmark_5;
            target_landmark_5 = detect_68landmarks.detect(target_img, boxes[position]);

            //绘图
            //Cv2.Rectangle(target_img, new OpenCvSharp.Point(boxes[0].xmin, boxes[0].ymin), new OpenCvSharp.Point(boxes[0].xmax, boxes[0].ymax), new Scalar(255, 0, 0), 2);
            //foreach (Point2f item in target_landmark_5)
            //{
            //    Cv2.Circle(target_img, (int)item.X, (int)item.Y, 4, new Scalar(0, 255, 0), -1);
            //}
            //Cv2.ImShow("target_img", target_img);

            Mat swapimg = swap_face.process(target_img, source_face_embedding, target_landmark_5);

            Mat resultimg = enhance_face.process(swapimg, target_landmark_5);

            //pictureBox3.Image = swapimg.ToBitmap();

            pictureBox3.Image = resultimg.ToBitmap();

            // Cv2.ImShow("resultimg", resultimg);

        }

        private void Form1_Load(object sender, EventArgs e)
        {
            detect_face = new Yolov8Face("model/yoloface_8n.onnx");
            detect_68landmarks = new Face68Landmarks("model/2dfan4.onnx");
            face_embedding = new FaceEmbdding("model/arcface_w600k_r50.onnx");
            swap_face = new SwapFace("model/inswapper_128.onnx");
            enhance_face = new FaceEnhance("model/gfpgan_1.4.onnx");

            target_path = "images/target.jpg";
            source_path = "images/5.jpg";
             //堆代码 duidaima.com
            //target_path = "images/5.jpg";
            //source_path = "images/14.jpg";

            pictureBox1.Image = new Bitmap(source_path);
            pictureBox2.Image = new Bitmap(target_path);
        }
    }
}