C# OpenCvSharp 部署MOWA：多合一图像扭曲模型

目录

说明

效果

项目

代码

下载

参考

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C# OpenCvSharp 部署MOWA：多合一图像扭曲模型

说明

算法模型的paper名称是《MOWA: Multiple-in-One Image Warping Model》

ariv链接 https://arxiv.org/pdf/2404.10716 

效果

Stitched Image

翻译成中文意思是：拼接图像。效果图如下，可以看到输入原图的边界是不规则的，在经过模型推理之后输出的图的边界是规整了。

Rectified Wide-Angle Image

翻译成中文意思是：矫正广角图像。效果图如下，可以看到输入原图的左右上下边界是扭曲的，在经过模型推理之后输出的图的边界是规整了。

Unrolling Shutter Image

翻译成中文意思是：卷帘快门图像。效果图如下，可以看到输入原图的右边界是弯曲的，在经过模型推理之后输出的图的边界是规整了。

Rotated Image

翻译成中文意思是：旋转图像。效果图如下，可以看到输入原图是有明显倾斜的，在经过模型推理之后输出的图是摆正了。

Fisheye Image

翻译成中文意思是：鱼眼图像。效果图如下，可以看到输入原图里的建筑物有明显扭曲的，在经过模型推理之后输出的图里的建筑物是正直的了。

项目

代码

using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

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

        Stopwatch stopwatch = new Stopwatch();
        Mat image;
        Mat mask;
        Mat mesh_img;
        Mat grid_mesh_img;
        Mat flow_img;

        string image_path;
        string mask_path;
        string startupPath;
        string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";
        const string DllName = "MOWASharp.dll";
        IntPtr engine;

        /*
         //初始化
        extern "C" _declspec(dllexport) int __cdecl  init(void** engine, char* model_dir,char* msg);

        //detect
        extern "C" _declspec(dllexport) int __cdecl  detect(void* engine, Mat* srcimg, Mat* maskimg, char* msg, Mat* mesh_img, Mat* grid_mesh_img, Mat* flow_img);

        //释放
        extern "C" _declspec(dllexport) void __cdecl destroy(void* engine);

         */

        [DllImport(DllName, EntryPoint = "init", CallingConvention = CallingConvention.Cdecl)]
        internal extern static int init(ref IntPtr engine, string model_dir, StringBuilder msg);

        [DllImport(DllName, EntryPoint = "detect", CallingConvention = CallingConvention.Cdecl)]
        internal extern static int detect(IntPtr engine, IntPtr srcimg, IntPtr maskimg, StringBuilder msg, IntPtr mesh_img, IntPtr grid_mesh_img, IntPtr flow_img);

        [DllImport(DllName, EntryPoint = "destroy", CallingConvention = CallingConvention.Cdecl)]
        internal extern static int destroy(IntPtr engine);

        private void Form1_Load(object sender, EventArgs e)
        {
            startupPath = Application.StartupPath;

            string model_dir = startupPath + "\\model\\";

            StringBuilder msg = new StringBuilder(512);

            int res = init(ref engine, model_dir, msg);
            if (res == -1)
            {
                MessageBox.Show(msg.ToString());
                return;
            }
            else
            {
                Console.WriteLine(msg.ToString());
            }
            image_path = startupPath + "\\test_img\\39501.png";
            pictureBox1.Image = new Bitmap(image_path);

            mask_path = startupPath + "\\test_img\\39501_mask.png";
            pictureBox3.Image = new Bitmap(mask_path);
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            destroy(engine);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (image_path == "" || mask_path == "")
            {
                return;
            }

            textBox1.Text = "执行中……";
            button2.Enabled = false;
            if (pictureBox2.Image != null)
            {
                pictureBox2.Image.Dispose();
                pictureBox2.Image = null;
            }
            Application.DoEvents();

            Cv2.DestroyAllWindows();
            if (image != null) image.Dispose();
            if (mask != null) mask.Dispose();
            if (mesh_img != null) mesh_img.Dispose();
            if (grid_mesh_img != null) grid_mesh_img.Dispose();
            if (flow_img != null) flow_img.Dispose();

            StringBuilder msg = new StringBuilder(512);
            image = new Mat(image_path);
            mask = new Mat(mask_path,ImreadModes.Grayscale);
            mesh_img = new Mat();
            grid_mesh_img = new Mat();
            flow_img = new Mat();

            stopwatch.Restart();

            int res = detect(engine, image.CvPtr, mask.CvPtr, msg, mesh_img.CvPtr, grid_mesh_img.CvPtr, flow_img.CvPtr);
            if (res == 0)
            {
                stopwatch.Stop();
                double costTime = stopwatch.Elapsed.TotalMilliseconds;
                pictureBox2.Image = new Bitmap(flow_img.ToMemoryStream());
                Cv2.ImShow("mesh_img", mesh_img);
                Cv2.ImShow("grid_mesh_img", grid_mesh_img);
                textBox1.Text = $"耗时:{costTime:F2}ms";
            }
            else
            {
                textBox1.Text = "失败," + msg.ToString();
            }
            button2.Enabled = true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            ofd.InitialDirectory = startupPath + "\\test_img";
            if (ofd.ShowDialog() != DialogResult.OK) return;

            pictureBox1.Image = null;
            pictureBox2.Image = null;
            textBox1.Text = "";

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

        private void button4_Click(object sender, EventArgs e)
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = fileFilter;
            ofd.InitialDirectory = startupPath+"\\test_img";
            if (ofd.ShowDialog() != DialogResult.OK) return;

            pictureBox3.Image = null;
            pictureBox2.Image = null;
            textBox1.Text = "";

            mask_path = ofd.FileName;
            pictureBox3.Image = new Bitmap(mask_path);
            mask = new Mat(image_path);
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (pictureBox2.Image == null)
            {
                return;
            }
            Bitmap output = new Bitmap(pictureBox2.Image);
            var sdf = new SaveFileDialog();
            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);
            }
        }
    }
}
 

using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Imaging;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace MOWA
{public partial class Form1 : Form{public Form1(){InitializeComponent();}Stopwatch stopwatch = new Stopwatch();Mat image;Mat mask;Mat mesh_img;Mat grid_mesh_img;Mat flow_img;string image_path;string mask_path;string startupPath;string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";const string DllName = "MOWASharp.dll";IntPtr engine;/*//初始化extern "C" _declspec(dllexport) int __cdecl  init(void** engine, char* model_dir,char* msg);//detectextern "C" _declspec(dllexport) int __cdecl  detect(void* engine, Mat* srcimg, Mat* maskimg, char* msg, Mat* mesh_img, Mat* grid_mesh_img, Mat* flow_img);//释放extern "C" _declspec(dllexport) void __cdecl destroy(void* engine);*/[DllImport(DllName, EntryPoint = "init", CallingConvention = CallingConvention.Cdecl)]internal extern static int init(ref IntPtr engine, string model_dir, StringBuilder msg);[DllImport(DllName, EntryPoint = "detect", CallingConvention = CallingConvention.Cdecl)]internal extern static int detect(IntPtr engine, IntPtr srcimg, IntPtr maskimg, StringBuilder msg, IntPtr mesh_img, IntPtr grid_mesh_img, IntPtr flow_img);[DllImport(DllName, EntryPoint = "destroy", CallingConvention = CallingConvention.Cdecl)]internal extern static int destroy(IntPtr engine);private void Form1_Load(object sender, EventArgs e){startupPath = Application.StartupPath;string model_dir = startupPath + "\\model\\";StringBuilder msg = new StringBuilder(512);int res = init(ref engine, model_dir, msg);if (res == -1){MessageBox.Show(msg.ToString());return;}else{Console.WriteLine(msg.ToString());}image_path = startupPath + "\\test_img\\39501.png";pictureBox1.Image = new Bitmap(image_path);mask_path = startupPath + "\\test_img\\39501_mask.png";pictureBox3.Image = new Bitmap(mask_path);}private void Form1_FormClosed(object sender, FormClosedEventArgs e){destroy(engine);}private void button2_Click(object sender, EventArgs e){if (image_path == "" || mask_path == ""){return;}textBox1.Text = "执行中……";button2.Enabled = false;if (pictureBox2.Image != null){pictureBox2.Image.Dispose();pictureBox2.Image = null;}Application.DoEvents();Cv2.DestroyAllWindows();if (image != null) image.Dispose();if (mask != null) mask.Dispose();if (mesh_img != null) mesh_img.Dispose();if (grid_mesh_img != null) grid_mesh_img.Dispose();if (flow_img != null) flow_img.Dispose();StringBuilder msg = new StringBuilder(512);image = new Mat(image_path);mask = new Mat(mask_path,ImreadModes.Grayscale);mesh_img = new Mat();grid_mesh_img = new Mat();flow_img = new Mat();stopwatch.Restart();int res = detect(engine, image.CvPtr, mask.CvPtr, msg, mesh_img.CvPtr, grid_mesh_img.CvPtr, flow_img.CvPtr);if (res == 0){stopwatch.Stop();double costTime = stopwatch.Elapsed.TotalMilliseconds;pictureBox2.Image = new Bitmap(flow_img.ToMemoryStream());Cv2.ImShow("mesh_img", mesh_img);Cv2.ImShow("grid_mesh_img", grid_mesh_img);textBox1.Text = $"耗时:{costTime:F2}ms";}else{textBox1.Text = "失败," + msg.ToString();}button2.Enabled = true;}private void button1_Click(object sender, EventArgs e){OpenFileDialog ofd = new OpenFileDialog();ofd.Filter = fileFilter;ofd.InitialDirectory = startupPath + "\\test_img";if (ofd.ShowDialog() != DialogResult.OK) return;pictureBox1.Image = null;pictureBox2.Image = null;textBox1.Text = "";image_path = ofd.FileName;pictureBox1.Image = new Bitmap(image_path);image = new Mat(image_path);}private void button4_Click(object sender, EventArgs e){OpenFileDialog ofd = new OpenFileDialog();ofd.Filter = fileFilter;ofd.InitialDirectory = startupPath+"\\test_img";if (ofd.ShowDialog() != DialogResult.OK) return;pictureBox3.Image = null;pictureBox2.Image = null;textBox1.Text = "";mask_path = ofd.FileName;pictureBox3.Image = new Bitmap(mask_path);mask = new Mat(image_path);}private void button3_Click(object sender, EventArgs e){if (pictureBox2.Image == null){return;}Bitmap output = new Bitmap(pictureBox2.Image);var sdf = new SaveFileDialog();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);}}}
}

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源码下载

参考

https://github.com/hpc203/MOWA-onnxrun