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);
            }
        }
    }
}
 

1. using OpenCvSharp;
2. using System;
3. using System.Collections.Generic;
4. using System.ComponentModel;
5. using System.Data;
6. using System.Diagnostics;
7. using System.Drawing;
8. using System.Drawing.Imaging;
9. using System.Linq;
10. using System.Runtime.InteropServices;
11. using System.Text;
12. using System.Threading.Tasks;
13. using System.Windows.Forms;
15. namespace MOWA
16. {
17. public partial class Form1 : Form
18. {
19. public Form1()
20. {
21. InitializeComponent();
22. }
24. Stopwatch stopwatch = new Stopwatch();
25. Mat image;
26. Mat mask;
27. Mat mesh_img;
28. Mat grid_mesh_img;
29. Mat flow_img;
31. string image_path;
32. string mask_path;
33. string startupPath;
34. string fileFilter = "*.*|*.bmp;*.jpg;*.jpeg;*.tiff;*.tiff;*.png";
35. const string DllName = "MOWASharp.dll";
36. IntPtr engine;
38. /*
39. //初始化
40. extern "C" _declspec(dllexport) int __cdecl init(void** engine, char* model_dir,char* msg);
42. //detect
43. 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);
45. //释放
46. extern "C" _declspec(dllexport) void __cdecl destroy(void* engine);
48. */
50. [DllImport(DllName, EntryPoint = "init", CallingConvention = CallingConvention.Cdecl)]
51. internal extern static int init(ref IntPtr engine, string model_dir, StringBuilder msg);
53. [DllImport(DllName, EntryPoint = "detect", CallingConvention = CallingConvention.Cdecl)]
54. internal extern static int detect(IntPtr engine, IntPtr srcimg, IntPtr maskimg, StringBuilder msg, IntPtr mesh_img, IntPtr grid_mesh_img, IntPtr flow_img);
56. [DllImport(DllName, EntryPoint = "destroy", CallingConvention = CallingConvention.Cdecl)]
57. internal extern static int destroy(IntPtr engine);
59. private void Form1_Load(object sender, EventArgs e)
60. {
61. startupPath = Application.StartupPath;
63. string model_dir = startupPath + "\\model\";
65. StringBuilder msg = new StringBuilder(512);
67. int res = init(ref engine, model_dir, msg);
68. if (res == -1)
69. {
70. MessageBox.Show(msg.ToString());
71. return;
72. }
73. else
74. {
75. Console.WriteLine(msg.ToString());
76. }
77. image_path = startupPath + "\\test_img\\39501.png";
78. pictureBox1.Image = new Bitmap(image_path);
80. mask_path = startupPath + "\\test_img\\39501_mask.png";
81. pictureBox3.Image = new Bitmap(mask_path);
82. }
84. private void Form1_FormClosed(object sender, FormClosedEventArgs e)
85. {
86. destroy(engine);
87. }
89. private void button2_Click(object sender, EventArgs e)
90. {
91. if (image_path == "" || mask_path == "")
92. {
93. return;
94. }
96. textBox1.Text = "执行中……";
97. button2.Enabled = false;
98. if (pictureBox2.Image != null)
99. {
100. pictureBox2.Image.Dispose();
101. pictureBox2.Image = null;
102. }
103. Application.DoEvents();
105. Cv2.DestroyAllWindows();
106. if (image != null) image.Dispose();
107. if (mask != null) mask.Dispose();
108. if (mesh_img != null) mesh_img.Dispose();
109. if (grid_mesh_img != null) grid_mesh_img.Dispose();
110. if (flow_img != null) flow_img.Dispose();
112. StringBuilder msg = new StringBuilder(512);
113. image = new Mat(image_path);
114. mask = new Mat(mask_path,ImreadModes.Grayscale);
115. mesh_img = new Mat();
116. grid_mesh_img = new Mat();
117. flow_img = new Mat();
119. stopwatch.Restart();
121. int res = detect(engine, image.CvPtr, mask.CvPtr, msg, mesh_img.CvPtr, grid_mesh_img.CvPtr, flow_img.CvPtr);
122. if (res == 0)
123. {
124. stopwatch.Stop();
125. double costTime = stopwatch.Elapsed.TotalMilliseconds;
126. pictureBox2.Image = new Bitmap(flow_img.ToMemoryStream());
127. Cv2.ImShow("mesh_img", mesh_img);
128. Cv2.ImShow("grid_mesh_img", grid_mesh_img);
129. textBox1.Text = $"耗时:{costTime:F2}ms";
130. }
131. else
132. {
133. textBox1.Text = "失败," + msg.ToString();
134. }
135. button2.Enabled = true;
136. }
138. private void button1_Click(object sender, EventArgs e)
139. {
140. OpenFileDialog ofd = new OpenFileDialog();
141. ofd.Filter = fileFilter;
142. ofd.InitialDirectory = startupPath + "\\test_img";
143. if (ofd.ShowDialog() != DialogResult.OK) return;
145. pictureBox1.Image = null;
146. pictureBox2.Image = null;
147. textBox1.Text = "";
149. image_path = ofd.FileName;
150. pictureBox1.Image = new Bitmap(image_path);
151. image = new Mat(image_path);
152. }
154. private void button4_Click(object sender, EventArgs e)
155. {
156. OpenFileDialog ofd = new OpenFileDialog();
157. ofd.Filter = fileFilter;
158. ofd.InitialDirectory = startupPath+"\\test_img";
159. if (ofd.ShowDialog() != DialogResult.OK) return;
161. pictureBox3.Image = null;
162. pictureBox2.Image = null;
163. textBox1.Text = "";
165. mask_path = ofd.FileName;
166. pictureBox3.Image = new Bitmap(mask_path);
167. mask = new Mat(image_path);
168. }
170. private void button3_Click(object sender, EventArgs e)
171. {
172. if (pictureBox2.Image == null)
173. {
174. return;
175. }
176. Bitmap output = new Bitmap(pictureBox2.Image);
177. var sdf = new SaveFileDialog();
178. sdf.Title = "保存";
179. sdf.Filter = "Images (*.jpg)|*.jpg|Images (*.png)|*.png|Images (*.bmp)|*.bmp";
180. if (sdf.ShowDialog() == DialogResult.OK)
181. {
182. switch (sdf.FilterIndex)
183. {
184. case 1:
185. {
186. output.Save(sdf.FileName, ImageFormat.Jpeg);
187. break;
188. }
189. case 2:
190. {
191. output.Save(sdf.FileName, ImageFormat.Png);
192. break;
193. }
194. case 3:
195. {
196. output.Save(sdf.FileName, ImageFormat.Bmp);
197. break;
198. }
199. }
200. MessageBox.Show("保存成功，位置：" + sdf.FileName);
201. }
202. }
203. }
204. }

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参考

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