imreadC#调用C++、Opencv的代码可以通过托管和(2)

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices;

namespace ImageCS2

{

public partial class Form1 : Form

{

[DllImport("ImageCPP.dll")]

public static extern IntPtr run1(string a, out int width, out int height, out int step);

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

string filename;

OpenFileDialog op = new OpenFileDialog();

if (op.ShowDialog() == DialogResult.OK)

{

filename = op.FileName;

int width, height, step;

IntPtr dst = run1(filename, out width, out height, out step);

Bitmap img = new Bitmap(width, height, step, System.Drawing.Imaging.PixelFormat. Format24bppRgb, dst);

pictureBox1.Image = img;

}

}

}

}

(6) C++传递灰度图，在C#中的代码略有差别，代码如下：

[DllImport("raildetection.dll")]

public static extern IntPtr run1(string a , out int width, out int height, out int step);

private void button1_Click(object sender, EventArgs e)

{

string filename;

OpenFileDialog op = new OpenFileDialog();

if (op.ShowDialog() == DialogResult.OK)

{

filename = op.FileName;

int width, height, step;

IntPtr dst = run1(filename,out width,out height, out step);

Bitmap img = new Bitmap(width, height, step, <strong>System.Drawing.Imaging.PixelFormat.Format8bppIndexed</strong>,dst);

<strong>img.Palette = CvToolbox.GrayscalePalette;</strong>

pictureBox1.Image = img;

}

}

public static class CvToolbox

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