matlab与c#混合编程之图像参数传递

先上代码

//命名空间using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using MathWorks.MATLAB.NET.Arrays;using MathWorks.MATLAB.NET.Utility;using read_image;using System.IO;using preprocess;//函数一：在该函数中读入图片 private void openImage_button(object sender, EventArgs e){   string fullPathname;   openFileDialog.Filter = "*.BMP,*.JPG;*.GIF|*.BMP;*.JPG;*.GIF"; ;   openFileDialog.ShowDialog();   this.textBox1.SelectedText = openFileDialog.FileName;   fullPathname = openFileDialog.FileName;   Image a = Image.FromFile(fullPathname);   bit_original = new Bitmap(a);   height = bit_original.Height;   width = bit_original.Width;   display_image(bit_original);} //函数二：在该函数中传递图片给matlab程序 private void process_button(object sender, EventArgs e){    try     {         byte[,,] rgb=new byte[3,height,width] ;         for (int i = 0; i < height; i++)         {             for (int j = 0; j < width; j++)             {                 rgb[0,i,j] = bit_original.GetPixel(j, i).R;                 rgb[1,i,j] = bit_original.GetPixel(j, i).G;                 rgb[2,i,j] = bit_original.GetPixel(j, i).B;             }         }         MWNumericArray matrix = rgb;         MWArray flag = 0;         ImageProcess prepro = new ImageProcess();         MWArray result = prepro.preprocess(matrix, flag);         Bitmap ans = new Bitmap(width,height);             for (int i = 0; i < height; i++)         {             for (int j = 0; j < width; j++)             {                 tmp = result[i+1,j+1].ToString();                 if (tmp=="1")                     ans.SetPixel(j, i, Color.White);                 else                     ans.SetPixel(j, i, Color.Black);             }         }         display_image(ans);     }     catch (Exception ex)     {         textBox1.SelectedText = ex.Message;     }}//函数三：在图片框控件中显示位图 private void display_image(Bitmap img){    Bitmap bit = new Bitmap(pictureBox1.Width, pictureBox1.Height);    Graphics g = Graphics.FromImage(bit);    g.DrawImage(img, new Rectangle(0, 0, bit.Width, bit.Height), new Rectangle(0, 0, img.Width, img.Height), GraphicsUnit.Pixel);    pictureBox1.Image = bit;}

以上为程序主要的三个函数，实现功能为读入一个rgb图像，对图像进行灰度化二值化等处理后返回一个黑白图像，返回图像的像素值只有0和1。函数一为一个按钮的响应函数，该函数将选择的图片保存为Bitmap类型。函数二首先将Bitmap类型图片转化为三维Byte类型数据，然后转化为MWNumericArray类型。我封装的matlab类名是ImageProcess，调用的preprocess函数接受两个参数，一个是图片矩阵，另外一个是标志变量flag，将它定为MWArray类型的。
然后将result转化为Bitmap型以便在图片框中显示处理后的图片。但该种方法效率奇慢，正在探索如何用Lockbit方法给Bitmap对象赋值。
实际运行中有以下问题：
1. 如果一定要将编译平台选为64位的，否则会出错。

2. 混编的处理效率太低，需要找到提高效率的方法。
3. 要将MWArray.dll添加到引用里，并添加以下语句

using MathWorks.MATLAB.NET.Arrays;using MathWorks.MATLAB.NET.Utility;