C# OpenCvSharp 部署MOWA：多合一图像扭曲模型

说明

效果

项目

代码

下载

参考

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);

        //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);
            }
        }
    }
}