Inputs
-------------------------
name：inputimg
tensor：Float[1, 3, 512, 512]
---------------------------------------------------------------

Outputs
-------------------------
name：kvxy/concat
tensor：Float[1, 341, 17, 3]
name：pv/concat
tensor：Float[1, 341, 1, 1]
---------------------------------------------------------------

using OpenCvSharp;
using System;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;


namespace OpenVINO_Demo
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
        }

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

        E2Pose e2Pose;
        Mat image;

        string image_path = "";
        string model_path;

        string video_path = "";
        string videoFilter = "视频|*.mp4;*.avi";
        VideoCapture vcapture;
        VideoWriter vwriter;
        bool saveDetVideo = false;

        /// <summary>
        /// 单图推理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button2_Click(object sender, EventArgs e)
        {

            if (image_path == "")
            {
                return;
            }

            button2.Enabled = false;
            pictureBox2.Image = null;
            textBox1.Text = "";

            Application.DoEvents();

            image = new Mat(image_path);

            Mat result_image = image.Clone();
            e2Pose.Detect(result_image);

            if (pictureBox2.Image != null)
            {
                pictureBox2.Image.Dispose();
            }
            pictureBox2.Image = new Bitmap(result_image.ToMemoryStream());
            textBox1.Text = e2Pose.DetectTime();

            button2.Enabled = true;

        }

        /// <summary>
        /// 窗体加载，初始化
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Form1_Load(object sender, EventArgs e)
        {
            image_path = "test/1.jpg";
            pictureBox1.Image = new Bitmap(image_path);

            model_path = "model/e2epose_resnet50_1x3x512x512.onnx";

            e2Pose = new E2Pose(model_path);
        }

        /// <summary>
        /// 选择图片
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button1_Click_1(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = imgFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;

            pictureBox1.Image = null;

            image_path = ofd.FileName;
            pictureBox1.Image = new Bitmap(image_path);

            textBox1.Text = "";
            pictureBox2.Image = null;
        }

        /// <summary>
        /// 选择视频
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button4_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = videoFilter;
            ofd.InitialDirectory = Application.StartupPath + "\\test";
            if (ofd.ShowDialog() != DialogResult.OK) return;

            video_path = ofd.FileName;

            textBox1.Text = video_path;
        }

        /// <summary>
        /// 视频推理
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void button3_Click(object sender, EventArgs e)
        {
            if (video_path == "")
            {
                MessageBox.Show("请先选择视频！");
                return;
            }

            textBox1.Text = "开始检测";

            Application.DoEvents();

            Thread thread = new Thread(new ThreadStart(VideoDetection));

            thread.Start();
            thread.Join();

            textBox1.Text = "检测完成！";
        }

        void VideoDetection()
        {
            vcapture = new VideoCapture(video_path);
            if (!vcapture.IsOpened())
            {
                MessageBox.Show("打开视频文件失败");
                return;
            }


            Mat frame = new Mat();

            // 获取视频的fps
            double videoFps = vcapture.Get(VideoCaptureProperties.Fps);
            // 计算等待时间（毫秒）
            int delay = (int)(1000 / videoFps);
            Stopwatch _stopwatch = new Stopwatch();

            if (checkBox1.Checked)
            {
                vwriter = new VideoWriter("out.mp4", FourCC.X264, vcapture.Fps, new OpenCvSharp.Size(vcapture.FrameWidth, vcapture.FrameHeight));
                saveDetVideo = true;
            }
            else
            {
                saveDetVideo = false;
            }

            Cv2.NamedWindow("DetectionResult 按下ESC，退出", WindowFlags.Normal);
            Cv2.ResizeWindow("DetectionResult 按下ESC，退出", vcapture.FrameWidth, vcapture.FrameHeight);

            while (vcapture.Read(frame))
            {
                if (frame.Empty())
                {
                    MessageBox.Show("读取失败");
                    return;
                }

                _stopwatch.Restart();

                delay = (int)(1000 / videoFps);

                e2Pose.Detect(frame);

                Cv2.PutText(frame, "preprocessTime:" + e2Pose.preprocessTime.ToString("F2") + "ms", new OpenCvSharp.Point(10, 30), HersheyFonts.HersheySimplex, 1, Scalar.Red, 2);
                Cv2.PutText(frame, "inferTime:" + e2Pose.inferTime.ToString("F2") + "ms", new OpenCvSharp.Point(10, 70), HersheyFonts.HersheySimplex, 1, Scalar.Red, 2);
                Cv2.PutText(frame, "postprocessTime:" + e2Pose.postprocessTime.ToString("F2") + "ms", new OpenCvSharp.Point(10, 110), HersheyFonts.HersheySimplex, 1, Scalar.Red, 2);
                Cv2.PutText(frame, "totalTime:" + e2Pose.totalTime.ToString("F2") + "ms", new OpenCvSharp.Point(10, 150), HersheyFonts.HersheySimplex, 1, Scalar.Red, 2);
                Cv2.PutText(frame, "video fps:" + videoFps.ToString("F2"), new OpenCvSharp.Point(10, 190), HersheyFonts.HersheySimplex, 1, Scalar.Red, 2);
                Cv2.PutText(frame, "det fps:" + e2Pose.detFps.ToString("F2"), new OpenCvSharp.Point(10, 230), HersheyFonts.HersheySimplex, 1, Scalar.Red, 2);

                if (saveDetVideo)
                {
                    vwriter.Write(frame);
                }

                Cv2.ImShow("DetectionResult 按下ESC，退出", frame);

                // for test
                // delay = 1;
                delay = (int)(delay - _stopwatch.ElapsedMilliseconds);
                if (delay <= 0)
                {
                    delay = 1;
                }
                //Console.WriteLine("delay:" + delay.ToString()) ;
                if (Cv2.WaitKey(delay) == 27 || Cv2.GetWindowProperty("DetectionResult 按下ESC，退出", WindowPropertyFlags.Visible) < 1.0)
                {
                    Cv2.DestroyAllWindows();
                    vcapture.Release();
                    break;
                }
            }

            Cv2.DestroyAllWindows();
            vcapture.Release();
            if (saveDetVideo)
            {
                vwriter.Release();
            }

        }

        private void button5_Click(object sender, EventArgs e)
        {
            if (video_path == "")
            {
                MessageBox.Show("请先选择视频！");
                return;
            }
            button5.Enabled = false;
            textBox1.Text = "开始检测";
            Application.DoEvents();

            Task task = new Task(() =>
            {
                VideoCapture vcapture = new VideoCapture(video_path);
                if (!vcapture.IsOpened())
                {
                    MessageBox.Show("打开视频文件失败");
                    return;
                }

                E2Pose2 e2Pose2 = new E2Pose2(model_path);

                Mat frame = new Mat();
                 // 堆代码 duidaima.com
                // 获取视频的fps
                double videoFps = vcapture.Get(VideoCaptureProperties.Fps);
                // 计算等待时间（毫秒）
                int delay = (int)(1000 / videoFps);
                Stopwatch _stopwatch = new Stopwatch();

                Cv2.NamedWindow("DetectionResult 按下ESC，退出", WindowFlags.Normal);
                Cv2.ResizeWindow("DetectionResult 按下ESC，退出", vcapture.FrameWidth * 2, vcapture.FrameHeight);

                while (vcapture.Read(frame))
                {
                    if (frame.Empty())
                    {
                        MessageBox.Show("读取失败");
                        return;
                    }

                    _stopwatch.Restart();

                    delay = (int)(1000 / videoFps);

                    Mat result = e2Pose2.Detect(frame);

                    Cv2.ImShow("DetectionResult 按下ESC，退出", result);

                    // for test
                    // delay = 1;
                    delay = (int)(delay - _stopwatch.ElapsedMilliseconds);
                    if (delay <= 0)
                    {
                        delay = 1;
                    }
                    //Console.WriteLine("delay:" + delay.ToString()) ;
                    // 如果按下ESC或点击关闭，退出循环
                    if (Cv2.WaitKey(delay) == 27 || Cv2.GetWindowProperty("DetectionResult 按下ESC，退出", WindowPropertyFlags.Visible) < 1.0)
                    {
                        Cv2.DestroyAllWindows();
                        vcapture.Release();
                        break;
                    }
                }

                Cv2.DestroyAllWindows();
                vcapture.Release();

                textBox1.Invoke(new Action(() =>
                {
                    textBox1.Text = "检测结束！";
                    button5.Enabled = true; ;

                }));

            });
            task.Start();

        }

        //保存
        SaveFileDialog sdf = new SaveFileDialog();
        private void button6_Click(object sender, EventArgs e)
        {
            if (pictureBox2.Image == null)
            {
                return;
            }
            Bitmap output = new Bitmap(pictureBox2.Image);
            sdf.Title = "保存";
            sdf.Filter = "Images (*.jpg)|*.jpg|Images (*.png)|*.png|Images (*.bmp)|*.bmp";
            if (sdf.ShowDialog() == DialogResult.OK)
            {
                switch (sdf.FilterIndex)
                {
                    case 1:
                        {
                            output.Save(sdf.FileName, ImageFormat.Jpeg);
                            break;
                        }
                    case 2:
                        {
                            output.Save(sdf.FileName, ImageFormat.Png);
                            break;
                        }
                    case 3:
                        {
                            output.Save(sdf.FileName, ImageFormat.Bmp);
                            break;
                        }
                }
                MessageBox.Show("保存成功，位置：" + sdf.FileName);
            }

        }

    }