[置顶] 将C++ IplImage 图像用C#读取
如何将C++ IplImage 图像用C#读取 ？
将opencv 的C++程序做成 dll 动态链接库 用C#调用
当然这里需要安装emgucv ，也可以自己实现这个类。
我把这个类贴在后面了。
-----------------------------下面开始------------------------------------------
下面我把实现贴出来给大家参考：
1.制作dll
#include "stdafx.h"
#define DLL_API extern "C" _declspec(dllexport)
#include <Windows.h>
#include <stdio.h>
#include <opencv2\opencv.hpp>
#include <opencv\cxcore.h>
#include <opencv2/legacy/compat.hpp>
using namespace std;
using namespace cv;
DLL_API IplImage * _stdcall run1()
{
IplImage *src;
src = cvLoadImage("d:/1.jpg");
return src;
}
2.C#中读取dll
需要开启 unsafe 模式
[DllImport("dll_test_0410.dll")]
unsafe
public static extern MIplImage* run1();
调用函数并显示成图片：
需要将生成的dll 放入c#工程的bin里面对应的debug或者release
unsafe
MIplImage* a;
unsafe
private void button5_Click(object sender, EventArgs e)
{
IntPtr aa= new IntPtr();
a= run1();
int m= a->width;
aa = a->imageData;
int uu =a->height;
int step = a->widthStep;
Image<Bgr, byte> src = new Image<Bgr, byte>(m, uu, step, aa);//没有安装emgucv的话这个方法不能用,用intPtr转换
pictureBox1.Image = src.ToBitmap();
////////////////方法二，但是MIplImage还需要定义速度也慢，下面为单通道图像,多通道类似写一下就行//////
byte []uuu = new byte[width*height];
Marshal.Copy(aa,uuu,0,width*height);
Bitmap dst = new Bitmap(width, height);
Color color= new Color();
for(int j=0;j<height;j++)
{for(int i=0;i<width;i++)
{
byte m = uuu[j*width+i];
color = Color.FromArgb(m, m, m);
dst.SetPixel(i, j, color);
}
}
pictureBox1.Image = dst;
}
显示效果：
转载请注明：http://blog.csdn.net/yeyang911/article/details/23375933
可以自己定义这个类 长度为112和opencv里面IplImage 长度一样
下面是我按照C++的格式对应写的结构体
[StructLayout(LayoutKind.Sequential)]
public struct MIplImage
{
//
// 摘要:
// sizeof(IplImage)
public int nSize;
//
// 摘要:
// version (=0)
public int ID;
//
// 摘要:
// Most of OpenCV functions support 1,2,3 or 4 channels
public int nChannels;
//
// 摘要:
// ignored by OpenCV
public int alphaChannel;
//
// 摘要:
// pixel depth in bits: IPL_DEPTH_8U, IPL_DEPTH_8S, IPL_DEPTH_16U, IPL_DEPTH_16S,
// IPL_DEPTH_32S, IPL_DEPTH_32F and IPL_DEPTH_64F are supported
public IPL_DEPTH depth;
//
// 摘要:
// ignored by OpenCV
public byte colorModel0;
//
// 摘要:
// ignored by OpenCV
public byte colorModel1;
//
// 摘要:
// ignored by OpenCV
public byte colorModel2;
//
// 摘要:
// ignored by OpenCV
public byte colorModel3;
//
// 摘要:
// ignored by OpenCV
public byte channelSeq0;
//
// 摘要:
// ignored by OpenCV
public byte channelSeq1;
//
// 摘要:
// ignored by OpenCV
public byte channelSeq2;
//
// 摘要:
// ignored by OpenCV
public byte channelSeq3;
//
// 摘要:
// 0 - interleaved color channels, 1 - separate color channels. cvCreateImage
// can only create interleaved images
public int dataOrder;
//
// 摘要:
// 0 - top-left origin, 1 - bottom-left origin (Windows bitmaps style)
public int origin;
// 摘要:
// Alignment of image rows (4 or 8). OpenCV ignores it and uses widthStep instead
public int align;
//
// 摘要:
// image width in pixels
public int width;
//
// 摘要:
// image height in pixels
public int height;
//
// 摘要:
// image ROI. when it is not NULL, this specifies image region to process
public IntPtr roi;
//
// 摘要:
// must be NULL in OpenCV
public IntPtr maskROI;
//
// 摘要:
// ditto
public IntPtr imageId;
//
// 摘要:
// ditto
public IntPtr tileInfo;
//
// 摘要:
// image data size in bytes (=image->height*image->widthStep in case of interleaved
// data)
public int imageSize;
//
// 摘要:
// pointer to aligned image data
public IntPtr imageData;
//
// 摘要:
// size of aligned image row in bytes
public int widthStep;
//
// 摘要:
// border completion mode, ignored by OpenCV
public int BorderMode0;
//
// 摘要:
// border completion mode, ignored by OpenCV
public int BorderMode1;
//
// 摘要:
// border completion mode, ignored by OpenCV
public int BorderMode2;
//
// 摘要:
// border completion mode, ignored by OpenCV
public int BorderMode3;
//
// 摘要:
// border const, ignored by OpenCV
public int BorderConst0;
//
// 摘要:
// border const, ignored by OpenCV
public int BorderConst1;
//
// 摘要:
// border const, ignored by OpenCV
public int BorderConst2;
//
// 摘要:
// border const, ignored by OpenCV
public int BorderConst3;
//
// 摘要:
// pointer to a very origin of image data (not necessarily aligned) - it is
// needed for correct image deallocation
public IntPtr imageDataOrigin;
}
还需要下面这个结构体
public enum IPL_DEPTH
{
// 摘要:
// 1bit unsigned
IPL_DEPTH_1U = 1,
//
// 摘要:
// 8bit unsigned (Byte)
IPL_DEPTH_8U = 8,
//
// 摘要:
// 16bit unsigned
IPL_DEPTH_16U = 16,
//
// 摘要:
// 32bit float (Single)
IPL_DEPTH_32F = 32,
//
// 摘要:
// double
IPL_DEPTH_64F = 64,
//
// 摘要:
// indicates if the value is signed
IPL_DEPTH_SIGN = 0x80000000,
//
// 摘要:
// 8bit signed
IPL_DEPTH_8S = IPL_DEPTH_SIGN| 8,
//
// 摘要:
// 16bit signed
IPL_DEPTH_16S = IPL_DEPTH_SIGN|16,
//
// 摘要:
// 32bit signed
IPL_DEPTH_32S = IPL_DEPTH_SIGN|32,
}