⾃⼰积累的⼀些EmguCV代码（主要有图⽚格式转换，图⽚裁剪，图⽚翻转，图⽚旋转和图⽚平移等功能）using System;using System.Drawing;using Emgu.CV;using Emgu.CV.CvEnum;using Emgu.CV.Structure;namespace ZNLGIS{public class ImageClass{//图⽚裁剪public static Image<Bgr, Byte> Cut(Image<Bgr,Byte> image ,Rectangle rectangle){System.Drawing.Size roisize = new Size(260,380);IntPtr dst = CvInvoke.cvCreateImage(roisize, Emgu.CV.CvEnum.IPL_DEPTH.IPL_DEPTH_8U, 3);CvInvoke.cvSetImageROI(image.Ptr, rectangle);CvInvoke.cvCopy(image.Ptr, dst, IntPtr.Zero);return OpenCVEmguCVDotNet.IplImagePointerToEmgucvImage<Bgr, Byte>(dst);}//图⽚裁剪public static Image<Bgr, Byte> Cut2(Image<Bgr,Byte> image,int oldwidth,int oldheight){int x = image.Width - oldwidth;int y = image.Height - oldheight;System.Drawing.Size roisize = new System.Drawing.Size(oldwidth, oldheight); //要裁剪的图⽚⼤⼩IntPtr dst = CvInvoke.cvCreateImage(roisize, Emgu.CV.CvEnum.IPL_DEPTH.IPL_DEPTH_8U, 3);System.Drawing.Rectangle rect = new System.Drawing.Rectangle(x/2, y/2, oldwidth, oldheight);CvInvoke.cvSetImageROI(image.Ptr, rect);CvInvoke.cvCopy(image.Ptr, dst, IntPtr.Zero);return OpenCVEmguCVDotNet.IplImagePointerToEmgucvImage<Bgr, Byte>(dst);}//图⽚翻转public static Image<Bgr, Byte> FlipImage(Image<Bgr, Byte> image, bool isHorizontal){if (isHorizontal){CvInvoke.cvFlip(image.Ptr, IntPtr.Zero, FLIP.HORIZONTAL);}else{CvInvoke.cvFlip(image.Ptr, IntPtr.Zero, FLIP.VERTICAL);}return image;}//图⽚旋转public static Image<Bgr, Byte> RotateImage(Image<Bgr, Byte> image_old, double angle, bool clockwise){IntPtr image_temp;double anglerad = Math.PI * (angle / 180);int newwidth = (int)Math.Abs(image_old.Bitmap.Height * Math.Sin(anglerad)) +(int)Math.Abs(image_old.Bitmap.Width * Math.Cos(anglerad)) + 1;int newheight = (int)Math.Abs(image_old.Bitmap.Height * Math.Cos(anglerad)) +(int)Math.Abs(image_old.Bitmap.Width * Math.Sin(anglerad)) + 1;image_temp = CvInvoke.cvCreateImage(new Size(newwidth, newheight), IPL_DEPTH.IPL_DEPTH_8U, 3);CvInvoke.cvZero(image_temp);int flag = -1;if (clockwise){flag = 1;}float[] m = new float[6];int w = image_old.Bitmap.Width;int h = image_old.Bitmap.Height;m[0] = (float)Math.Cos(flag * angle * Math.PI / 180);m[1] = (float)Math.Sin(flag * angle * Math.PI / 180);m[3] = -m[1];m[4] = m[0];m[2] = w * 0.5f;unsafe{void* p;IntPtr ptr;fixed (float* pc = m){p = (void*)pc;ptr = new IntPtr(p);}IntPtr M = CvInvoke.cvMat(2, 3, MAT_DEPTH.CV_32F, ptr);CvInvoke.cvGetQuadrangleSubPix(image_old.Ptr,image_temp,M);}return OpenCVEmguCVDotNet.IplImagePointerToEmgucvImage<Bgr, Byte>(image_temp);}//图⽚平移public static Image<Bgr, Byte> Py(Image<Bgr, Byte> src,int x,int y){System.Drawing.Size roisize = new Size(src.Width, src.Height);Image<Bgr, Byte> dst = new Image<Bgr, byte>(src.Width, src.Height, new Bgr(Color.Transparent));int i, j;int w = src.Width;int h = src.Height;if (x >= 0 && y >= 0){for (i = 0; i < w - x; i++){for (j = 0; j < h - y; j++){CvInvoke.cvSet2D(dst, j + y, i + x, CvInvoke.cvGet2D(src, j, i));}}}else if (x >= 0 && y < 0){for (i = 0; i < w - x; i++){for (j = -y; j < h; j++){CvInvoke.cvSet2D(dst, j + y, i + x, CvInvoke.cvGet2D(src, j, i));}}}else if (x < 0 && y >= 0){for (i = -x; i < w; i++){for (j = 0; j < h - y; j++){CvInvoke.cvSet2D(dst, j + y, i + x, CvInvoke.cvGet2D(src, j, i));}}}else{for (i = -x; i < w; i++){for (j = -y; j < h; j++){CvInvoke.cvSet2D(dst, j + y, i + x, CvInvoke.cvGet2D(src, j, i));}}}return OpenCVEmguCVDotNet.IplImagePointerToEmgucvImage<Bgr, Byte>(dst);}}}using System;using System.Drawing;using System.Drawing.Imaging;using System.Runtime.InteropServices;using Emgu.CV;using Emgu.CV.CvEnum;namespace ZNLGIS{public class OpenCVEmguCVDotNet{/// <summary>/// 将MIplImage结构转换到IplImage指针；/// 注意：指针在使⽤完之后必须⽤Marshal.FreeHGlobal⽅法释放。
