C# Onnx实现特征匹配DeDoDe检测

目录

• 介绍
• 效果
• 模型信息
• 项目
• 代码

介绍

github地址：https://github.com/Parskatt/DeDoDe

DeDoDe Detect, Don't Describe - Describe, Don't Detect, for Local Feature Matching

The DeDoDe detector learns to detect 3D consijavascriptstent repeatable keypoints, which the DeDoDe descriptor learns to match. The result is a powerful decoupled local feature matcher.

Training DeDoDe

DISCLAMER: I've (Johan) not yet tested that the training scripts here reproduces our original results. This repo is very similar to the internal training repo, but there might be bugs introduced by refactoring etc. Let me know if you face any issues reproducing our results (or if you somehow get better results :D).

See experiments for the scripts to train DeDoDe. We trained on a single A100-40GB with a BATchsize of 8. Note that you need to do the data prep first, see data_prep.

As usual, we require that you have the MegaDepth dataset already downloaded, and that you have the prepared scene info from DKM.

效果

模型信息

Inputs

-------------------------

name：images

tensor：Float[-1, 3, -1, -1]

---------------------------------------------------------------

Outputs

-------------------------

name：matches_A

tensor：Float[-1, -1]

name：matches_B

tensor：Float[-1, -1]

name：batch_ids

tensor：Int64[-1]

---------------------------------------------------------------

项目

VS2022

.net framework 4.8

OpenCvSharp 4.8

Microsoft.ML.OnnxRuntime 1.16.2

代码

using Microsoft.ML.OnnxRuntime.Tensors;
using Microsoft.ML.OnnxRuntime;
using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Linq;
using System.Drawing;
using static System.Net.Mihttp://www.devze.comme.MediaTypeNames;
using System.Numerics;
 
namespace Onnx_Demo
{
    pub编程客栈lic partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }
 
        string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";
        string image_path = "";
        string image_path2 = "";
 
        DateTime dt1 = DateTime.Now;
        DateTime dt2 = DateTime.Now;
 
        int inpWidth;
        int inpHeight;
 
        float[] mean =new float[] { 0.485f, 0.456f, 0.406f };
        float[] std = new float[] { 0.229f, 0.224f, 0.225f };
 
        Mat image;
        Mat image2;
 
        string model_path = "";
 
        SessionOptions options;
        InferenceSession onnx_session;
        Tensor<float> input_tensor;
        Tensor<float> mask_tensor;
        List<NamedOnnxValue> input_ontainer;
 
        IDisposableReadOnlyCollection<DisposableNamedOnnxValue> result_infer;
        DisposableNamedOnnxValue[] results_onnxvalue;
 
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;
 
            pictureBox1.Image = null;
            pictureBox2.Image = null;
            textBox1.Text = "";
 
            image_path = ofd.FileName;
            pictureBox1.Image = new System.Drawing.Bitmap(image_path);
            image = new Mat(image_path);
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            // 创建输入容器
            input_ontainer = new List<NamedOnnxValue>();
 
            // 创建输出会话
            options = new SessionOptions();
            options.LogSeverityLevel = OrtLoggingLevel.ORT_LOGGING_LEVEL_INFO;
            options.AppendExecutionProvider_CPU(0);// 设置为CPU上运行
 
            // 创建推理模型类，读取本地模型文件
            model_path = "model/dedode_end2end_1024.onnx";
 
            inpHeight = 256;
            inpWidth = 256;
 
            onnx_session = new InferenceSession(model_path, options);
 
            // 创建输入容器
            input_ontainer = new List<NamedOnnxValue>();
 
            image_path = "test_img/im_A.jpg";
            pictureBox1.Image = new Bitmap(image_path);
 
            image_path2 = "test_img/im_B.jpg";
            pictureBox3.Image = new Bitmap(image_path2);
 
        }
 
        private unsafe void button2_Click(object sender, EventArgs e)
        {
            if (image_path == "")
            {
                return;
            }
            textBox1.Text = "检测中，请稍等……";
            pictureBox2.Image = null;
            System.Windows.Forms.Application.DoEvents();
 
            image = new Mat(image_path);
            image2 = new Mat(image_path2);
 
            float[] input_tensor_data = new float[2 * 3 * inpWidth * inpHeight];
 
            //preprocess
            Mat dstimg = new Mat();
            Cv2.CvtColor(image, dstimg, ColorConversionCodes.BGR2RGB);
            Cv2.Resize(dstimg, dstimg, new OpenCvSharp.Size(inpWidth, inpHeight));
            for (int c = 0; c < 3; c++)
            {
                for (int i = 0; i < inpHeight; i++)
                {
                    for (int j = 0; j < inpWidth; j++)
                    {
                        float pix = ((byte*)(dstimg.Ptr(i).ToPointer()))[j * 3 + c];
                        input_tensor_data[c * inpWidth * inpHeight + i * inpWidth + j] = (float)((pix / 255.0 - mean[c]) / std[c]);
                    }
                }
            }
 
   ZCmwgM         Cv2.CvtColor(image2, dstimg, ColorConversionCodes.BGR2RGB);
            Cv2.Resize(dstimg, dstimg, new OpenCvSharp.Size(inpWidth, inpHeight));
            for (int c = 0; c < 3; c++)
            {
                for (int i = 0; i < inpHeight; i++)
                {
                    for (int j = 0; j < inpWidth; j++)
                    {
                        float pix = ((byte*)(dstimg.Ptr(i).ToPointer()))[j * 3 + c];
                        input_tensor_data[(3+c )* inpWidth * inpHeight + i * inpWidth + j] = (float)((pix / 255.0 - mean[c]) / std[c]);
                    }
                }
            }
 
            input_tensor = new DenseTensor<float>(input_tensor_data, new[] { 2, 3, inpHeight, inpWidth });
 
            //将 input_tensor 放入一个输入参数的容器，并指定名称
            input_ontainer.Add(NamedOnnxValue.CreateFromTensor("images", input_tensor));
 
            dt1 = DateTime.Now;
            //运行 Inference 并获取结果
            result_infer = onnx_session.Run(input_ontainer);
            dt2 = DateTime.Now;
 
            //Postprocessing
            //将输出结果转为DisposableNamedOnnxValue数组
            results_onnxvalue = result_infer.ToArray();
 
            float[] matches_A = results_onnxvalue[0].AsTensor<float>().ToArray();
            float[] matches_B = results_onnxvalue[1].AsTensor<float>().ToArray();
            int num_points = results_onnxvalue[0].AsTensor<float>().Dimensions[0];
 
            List<KeyPoint> points_A = new List<KeyPoint>();
            List<KeyPoint> points_B = new List<KeyPoint>();
 
            KeyPoint temp;
            for (int i = 0; i < num_points; i++)
            {
                temp = new KeyPoint();
                temp.Pt.X = (float)((matches_A[i * 2] + 1) * 0.5 * image.Cols);
                temp.Pt.Y = (float)((matches_A[i * 2 + 1] + 1) * 0.5 * image.Rows);
                temp.Size = 1f;
                points_A.Add(temp);
            }
 
            num_points = results_onnxvalue[1].AsTensor<float>().Dimensions[0];
            for (int i = 0; i < num_points; i++)
            {
                temp = new KeyPoint();
                temp.Pt.X = (float)((matches_B[i * 2] + 1) * 0.5 * image2.Cols);
                temp.Pt.Y = (float)((matches_B[i * 2 + 1] + 1) * 0.5 * image2.Rows);
                temp.Size = 1f;
                points_B.Add(temp);
            }
 
            //匹配结果放在matches里面
            num_points = points_A.Count();
            List<DMatch> matches=new List<DMatch>();
            for (int i = 0; i < num_points; i++)
            {
                matches.Add(new DMatch(i, i, 0f));
            }
 
            //按照匹配关系将图画出来，背景图为match_img
            Mat match_img = new Mat();
            Cv2.DrawMatches(image, points_A, image2, points_B, matches, match_img);
 
            pictureBox2.Image = new System.Drawing.Bitmap(match_img.ToMemoryStream());
            textBox1.Text = "推理耗时:" + (dt2 - dt1).TotalMilliseconds + "ms";
 
        }
 
        private void pictureBox2_DoubleClick(object sender, EventArgs e)
        {
            Common.ShowNormalImg(pictureBox2.Image);
        }
 
        private void button3_Click(object sender, EventArgs e)
        {
            OpenFileDi编程客栈alog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            if (ofd.ShowDialog() != DialogResult.OK) return;
 
            pictureBox3.Image = null;
            pictureBox2.Image = null;
            textBox1.Text = "";
 
            image_path2 = ofd.FileName;
            pictureBox3.Image = new System.Drawing.Bitmap(image_path2);
            image2 = new Mat(image_path2);
        }
 
        private void pictureBox3_DoubleClick(object sender, EventArgs e)
        {
            Common.ShowNormalImg(pictureBox3.Image);
        }
 
        private void pictureBox1_DoubleClick(object sender, EventArgs e)
        {
            Common.ShowNormalImg(pictureBox1.Image);
        }
    }
}

到此这篇关于C# Onnx实现特征匹配DeDoDe检测的文章就介绍到这了,更多相关C# Onnx特征匹配内容请搜索编程客栈(www.devze.com)以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程客栈(www.devze.com)！