OpenCV Mat 转 ATL CImage

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ImageUtility.h

#pragma once  #include <opencv2/core/core.hpp>  #include <opencv2/imgproc/imgproc.hpp>  #include <opencv2/highgui/highgui.hpp>  using namespace cv;using namespace std;class ImageUtility{public:ImageUtility(void);~ImageUtility(void);// 实现cv::Mat 结构到 CImage结构的转化  void MatToCImage(Mat& mat, CImage& cImage);// CImage结构到Mat结构的转化  void CImageToMat(CImage& cImage, Mat& mat);// VS默认工程是Unicode编码（宽字节），有时需要ANSI，即单字节，实现宽到单的转化  string CString2StdString(const CString& cstr);// 显示图像到指定窗口  void DisplayImage(CWnd* m_pMyWnd, const CImage& image);// 格式转换，AWX云图转到可以显示的opencv支持的格式  Mat AWX2Mat(CString filePath);void DisplayImageEx(CWnd* pWnd, const CImage& image);};

ImageUtility.cpp

#include "ImageUtility.h"  ImageUtility::ImageUtility(void){}ImageUtility::~ImageUtility(void){}// 实现cv::Mat 结构到 CImage结构的转化  void ImageUtility::MatToCImage(Mat& mat, CImage& cImage){int width = mat.cols;int height = mat.rows;int channels = mat.channels();cImage.Destroy();//这一步是防止重复利用造成内存问题  cImage.Create(width, height, 8 * channels);uchar* ps;uchar* pimg = (uchar*)cImage.GetBits(); //获取CImage的像素存贮区的指针  int step = cImage.GetPitch();//每行的字节数,注意这个返回值有正有负  // 如果是1个通道的图像(灰度图像) DIB格式才需要对调色板设置    // CImage中内置了调色板，我们要对他进行赋值：  if (1 == channels){RGBQUAD* ColorTable;int MaxColors = 256;//这里可以通过CI.GetMaxColorTableEntries()得到大小(如果你是CI.Load读入图像的话)    ColorTable = new RGBQUAD[MaxColors];cImage.GetColorTable(0, MaxColors, ColorTable);//这里是取得指针    for (int i = 0; i<MaxColors; i++){ColorTable[i].rgbBlue = (BYTE)i;//BYTE和uchar一回事，但MFC中都用它    ColorTable[i].rgbGreen = (BYTE)i;ColorTable[i].rgbRed = (BYTE)i;}cImage.SetColorTable(0, MaxColors, ColorTable);delete[]ColorTable;}for (int i = 0; i < height; i++){ps = mat.ptr<uchar>(i);for (int j = 0; j < width; j++){if (1 == channels){*(pimg + i*step + j) = ps[j];//*(pimg + i*step + j) = 105;  }else if (3 == channels){*(pimg + i*step + j * 3) = ps[j * 3];*(pimg + i*step + j * 3 + 1) = ps[j * 3 + 1];*(pimg + i*step + j * 3 + 2) = ps[j * 3 + 2];}}}//string str = CString2StdString(_T("C:\\sample1020.bmp"));  //imwrite(str,mat);  //这句话就是用来测试cimage有没有被赋值  //cImage.Save(_T("C:\\sample1024.bmp"));  }// CImage结构到Mat结构的转化  void ImageUtility::CImageToMat(CImage& cImage, Mat& mat){}// VS默认工程是Unicode编码（宽字节），有时需要ANSI，即单字节，实现宽到单的转化  string ImageUtility::CString2StdString(const CString& cstr){CT2A str(cstr);return string(str.m_psz);}// 显示图像到指定窗口  void ImageUtility::DisplayImage(CWnd* m_pMyWnd, const CImage& image){CDC *m_pDC = m_pMyWnd->GetDC();//获取窗口所拥有的设备上下文，用于显示图像  m_pMyWnd->UpdateWindow();CRect rc;m_pMyWnd->GetWindowRect(&rc);/*InvalidateRect(m_pMyWnd->m_hWnd,&rc,true);*/int nwidth = rc.Width();int nheight = rc.Height();int fixed_width = min(image.GetWidth(), nwidth);int fixed_height = min(image.GetHeight(), nheight);double ratio_w = fixed_width / (double)image.GetWidth();double ratio_h = fixed_height / (double)image.GetHeight();double ratio = min(ratio_w, ratio_h);int show_width = (int)(image.GetWidth() * ratio);int show_height = (int)(image.GetHeight() * ratio);int offsetx = (nwidth - show_width) / 2;int offsety = (nheight - show_height) / 2;::SetStretchBltMode(m_pDC->GetSafeHdc(), COLORONCOLOR);//设置位图的伸缩模式  image.StretchBlt(m_pDC->GetSafeHdc(), offsetx, offsety, show_width, show_height,0, 0, image.GetWidth(), image.GetHeight(), SRCCOPY);}// 格式转换，AWX云图转到可以显示的opencv支持的格式  Mat ImageUtility::AWX2Mat(CString filePath){CFile fp;Mat   mat;fp.Open(filePath, CFile::modeRead);ULONGLONG flength = fp.GetLength();if (2475700 == flength){mat.create(1300, 1900, CV_8UC1);}else if (1444803 == flength){mat.create(1201, 1201, CV_8UC1);}LONGLONG size = mat.rows * mat.cols;LONGLONG sizebuff = fp.Seek(-size, CFile::end);uchar *pSource = new uchar[size];fp.Read(pSource, size);fp.Close();for (int i = 0; i<mat.rows; i++){uchar * ps = mat.ptr<uchar>(i);for (int j = 0; j < mat.cols; j++){ps[j] = *(pSource + i*mat.cols + j);}}delete pSource;return mat;}void ImageUtility::DisplayImageEx(CWnd* pWnd, const CImage& image){CDC *m_pDC = pWnd->GetDC();//获取窗口所拥有的设备上下文，用于显示图像  pWnd->UpdateWindow();CRect rc;//客户区大小  //CRect rc1;  pWnd->GetWindowRect(&rc);//ScreenToClient(&rc);  ::SetStretchBltMode(m_pDC->GetSafeHdc(), COLORONCOLOR);//设置位图的伸缩模式  image.StretchBlt(m_pDC->GetSafeHdc(), 0, 0, rc.Width() - 1, rc.Height() - 1,0, 0, image.GetWidth(), image.GetHeight(), SRCCOPY);}

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