C# OPenCV(Emgu) （转载加编辑）

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1.pathstring

IntPtr img=CvInvoke.cvLoadImage(path, Emgu.CV.CvEnum.LOAD_IMAGE_TYPE.CV_LOAD_IMAGE_ANYCOLOR);

//这种方法创建并不太好，在c#中可以直接创建成 CvImage<Gray,Byte>

Rectangle cr = CvInvoke.cvGetImageROI(img1);

int width = cr.Width;

int height = cr.Height;

IntPtr GrayImg1 = CvInvoke.cvCreateImage(cr.Size, Emgu.CV.CvEnum.IPL_DEPTH.IPL_DEPTH_8U, 1);

cvCvtColor

CvInvoke.cvCvtColor(img1, GrayImg1, Emgu.CV.CvEnum.COLOR_CONVERSION.CV_BGR2GRAY);

int[] hist_size = new int[1] { 256 };//

IntPtr HistImg=CvInvoke.cvCreateHist(1, hist_size, Emgu.CV.CvEnum.HIST_TYPE.CV_HIST_ARRAY, null, 1);//

CvInvoke.cvCalcHist(inPtr1, HistImg,false,System.IntPtr.Zero);//inPtr1HistimgIntPtr[] inPtr1 = new IntPtr[1] { SubImg}

Histimg

for (int i = 0; i < 256; i++)

{

temphist[i] = CvInvoke.cvQueryHistValue_1D(histImg, i);

}

temphist

4.cvLoadImageimg IntPtrIntPtrMIplImage

Emgu.CV.Structure.MIplImage MIpImg =

(Emgu.CV.Structure.MIplImage)System.Runtime.InteropServices.Marshal.PtrToStructure(img, typeof(Emgu.CV.Structure.MIplImage));

C#unsafenpixel = (int)((byte*)img.imageData + img.widthStep * i)[j];

IntPtr Dyncontour = new IntPtr();//

IntPtr Dynstorage = CvInvoke.cvCreateMemStorage(0);

int n= CvInvoke.cvFindContours(tempimg, Dynstorage, ref Dyncontour, StructSize.MCvContour, Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_CCOMP,Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_NONE, new Point(0, 0));

for(;DyncontourTemp!=null&&DyncontourTemp.Ptr.ToInt32()!=0;DyncontourTemp=DyncontourTemp.HNext)

{

CvInvoke.cvDrawContours(tempContImg, DyncontourTemp,new MCvScalar(255, 255, 255),new MCvScalar(255, 255, 255), 0, 1, Emgu.CV.CvEnum.LINE_TYPE.EIGHT_CONNECTED, new Point(0, 0));

}

DyncontourTemp

Seq<Point> DyncontourTemp1= new Seq<Point>(Dyncontour, null)//IntPtr

Seq<Point> DyncontourTemp=DyncontourTemp1;

7cvFindContours Dyncontour

seq<Point> DyncontourTemp1= new Seq<Point>(Dyncontour, null); //IntPtr

int total=contourImg.Total;//contourImg

int TempX = 0; int TempY = 0;int[,] contourArray = new int[2,total];

for (int i = 0; i < total;i++ )

{

contourArray[0,i]=contourImg[i].X;

contourArray[1,i]=contourImg[i].Y;

}

摘自：http://www.cnblogs.com/maiye/archive/2010/06/19/1761075.html

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