opencv +MFC 联合编程

需要用到CvvImage.h和CvvImage.cpp文件，通过CvvImage类写F_ShowImge（）函数显示：

/*---------------------------- * 功能 : 显示图像 *		 将要绘制的图像 src 复制到 des，然后绘制到控件号为 ID 的 Picture 控件 *---------------------------- * 函数 : CStereoVisionDlg::F_ShowImage * 访问 : PRivate  * 返回 : void * * 参数 : src	[in]	待显示图像 * 参数 : des	[in]	窗口图像 * 参数 : ID		[in]	图像窗口控件ID */void CRobotStereoVsionDlg::F_ShowImage(Mat& src, Mat& des, UINT ID){	if (src.empty())	{		return;	}	// 计算将图片缩放到 Image 区域所需的比例因子	double wRatio = des.cols / (double)src.cols;	double hRatio = des.rows / (double)src.rows;	double srcWH = src.cols / (double)src.rows;	double desWH = des.cols / (double)des.rows;	double scale = srcWH > desWH ? wRatio : hRatio;	// 缩放后图片的宽和高	int nw = (int)( src.cols * scale );	int nh = (int)( src.rows * scale );	// 为了将缩放后的图片存入 des 的正中部位，需计算图片在 des 左上角的期望坐标值	int tlx = (int)((des.cols - nw) / 2);	int tly = (int)((des.rows - nh) / 2);	// 设置 des 的 ROI 区域，用来存入图片 img	Mat desRoi = des(Rect(tlx, tly, nw, nh));	// 如果src是单通道图像，则转换为三通道图像	if (src.channels() == 1)	{		Mat src_c;		cvtColor(src, src_c, CV_GRAY2BGR);		// 对图片 src_t 进行缩放，并存入到 des 中		resize(src_c, desRoi, desRoi.size());	}	else	{		// 对图片 src 进行缩放，并存入到 des 中		resize( src, desRoi, desRoi.size() );	}	CDC* pDC = GetDlgItem( ID ) ->GetDC();		// 获得显示控件的 DC	HDC hDC = pDC ->GetSafeHdc();				// 获取 HDC(设备句柄) 来进行绘图操作	CRect rect;	GetDlgItem(ID) ->GetClientRect( &rect );	// 获取控件尺寸位置	CvvImage cimg;	iplImage cpy = des;	cimg.CopyOf( &cpy );						// 复制图片	cimg.DrawToHDC( hDC, &rect );				// 将图片绘制到显示控件的指定区域内		ReleaseDC( pDC );}CvvImage.h文件如下：
#pragma once#ifndef CVVIMAGE_CLASS_DEF#define CVVIMAGE_CLASS_DEF#ifndef RC_OPENCV_2_1_0#include <opencv/cv.h>#include <opencv/highgui.h>/* CvvImage class definition */class  CvvImage{public:	CvvImage();	virtual ~CvvImage();	/* Create image (BGR or grayscale) */	virtual bool  Create( int width, int height, int bits_per_pixel, int image_origin = 0 );	/* Load image from specified file */	virtual bool  Load( const char* filename, int desired_color = 1 );	/* Load rectangle from the file */	virtual bool  LoadRect( const char* filename,		int desired_color, CvRect r );#if defined WIN32 || defined _WIN32	virtual bool  LoadRect( const char* filename,		int desired_color, RECT r )	{		return LoadRect( filename, desired_color,			cvRect( r.left, r.top, r.right - r.left, r.bottom - r.top ));	}#endif	/* Save entire image to specified file. */	virtual bool  Save( const char* filename );	/* Get copy of input image ROI */	virtual void  CopyOf( CvvImage& image, int desired_color = -1 );	virtual void  CopyOf( IplImage* img, int desired_color = -1 );	IplImage* GetImage() { return m_img; };	virtual void  Destroy(void);	/* width and height of ROI */	int Width() { return !m_img ? 0 : !m_img->roi ? m_img->width : m_img->roi->width; };	int Height() { return !m_img ? 0 : !m_img->roi ? m_img->height : m_img->roi->height;};	int Bpp() { return m_img ? (m_img->depth & 255)*m_img->nChannels : 0; };	virtual void  Fill( int color );	/* draw to highgui window */	virtual void  Show( const char* window );#if defined WIN32 || defined _WIN32	/* draw part of image to the specified DC */	virtual void  Show( HDC dc, int x, int y, int width, int height,		int from_x = 0, int from_y = 0 );	/* draw the current image ROI to the specified rectangle of the destination DC */	virtual void  DrawToHDC( HDC hDCDst, RECT* pDstRect );#endifprotected:	IplImage*  m_img;};typedef CvvImage CImage;#endif#endif
CvvImage.cpp文件如下：
#include "stdafx.h"#ifndef RC_OPENCV_2_1_0#include "CvvImage.h"//////////////////////////////////////////////////////////////////////// Construction/Destruction//////////////////////////////////////////////////////////////////////CV_INLINE RECT NormalizeRect( RECT r );CV_INLINE RECT NormalizeRect( RECT r ){	int t;	if( r.left > r.right )	{		t = r.left;		r.left = r.right;		r.right = t;	}	if( r.top > r.bottom )	{		t = r.top;		r.top = r.bottom;		r.bottom = t;	}	return r;}CV_INLINE CvRect RectToCvRect( RECT sr );CV_INLINE CvRect RectToCvRect( RECT sr ){	sr = NormalizeRect( sr );	return cvRect( sr.left, sr.top, sr.right - sr.left, sr.bottom - sr.top );}CV_INLINE RECT CvRectToRect( CvRect sr );CV_INLINE RECT CvRectToRect( CvRect sr ){	RECT dr;	dr.left = sr.x;	dr.top = sr.y;	dr.right = sr.x + sr.width;	dr.bottom = sr.y + sr.height;	return dr;}CV_INLINE IplROI RectToROI( RECT r );CV_INLINE IplROI RectToROI( RECT r ){	IplROI roi;	r = NormalizeRect( r );	roi.xOffset = r.left;	roi.yOffset = r.top;	roi.width = r.right - r.left;	roi.height = r.bottom - r.top;	roi.coi = 0;	return roi;}void  FillBitmapInfo( BITMAPINFO* bmi, int width, int height, int bpp, int origin ){	assert( bmi && width >= 0 && height >= 0 && (bpp == 8 || bpp == 24 || bpp == 32));	BITMAPINFOHEADER* bmih = &(bmi->bmiHeader);	memset( bmih, 0, sizeof(*bmih));	bmih->biSize = sizeof(BITMAPINFOHEADER);	bmih->biWidth = width;	bmih->biHeight = origin ? abs(height) : -abs(height);	bmih->biPlanes = 1;	bmih->biBitCount = (unsigned short)bpp;	bmih->biCompression = BI_RGB;	if( bpp == 8 )	{		RGBQUAD* palette = bmi->bmiColors;		int i;		for( i = 0; i < 256; i++ )		{			palette[i].rgbBlue = palette[i].rgbGreen = palette[i].rgbRed = (BYTE)i;			palette[i].rgbReserved = 0;		}	}}CvvImage::CvvImage(){	m_img = 0;}void CvvImage::Destroy(){	cvReleaseImage( &m_img );}CvvImage::~CvvImage(){	Destroy();}bool  CvvImage::Create( int w, int h, int bpp, int origin ){	const unsigned max_img_size = 10000;	if( (bpp != 8 && bpp != 24 && bpp != 32) ||		(unsigned)w >=  max_img_size || (unsigned)h >= max_img_size ||		(origin != IPL_ORIGIN_TL && origin != IPL_ORIGIN_BL))	{		assert(0); // most probably, it is a programming error		return false;	}	if( !m_img || Bpp() != bpp || m_img->width != w || m_img->height != h )	{		if( m_img && m_img->nSize == sizeof(IplImage))			Destroy();		/* prepare IPL header */		m_img = cvCreateImage( cvSize( w, h ), IPL_DEPTH_8U, bpp/8 );	}	if( m_img )		m_img->origin = origin == 0 ? IPL_ORIGIN_TL : IPL_ORIGIN_BL;	return m_img != 0;}void  CvvImage::CopyOf( CvvImage& image, int desired_color ){	IplImage* img = image.GetImage();	if( img )	{		CopyOf( img, desired_color );	}}#define HG_IS_IMAGE(img)                                                  /	((img) != 0 && ((const IplImage*)(img))->nSize == sizeof(IplImage) && /	((IplImage*)img)->imageData != 0)void  CvvImage::CopyOf( IplImage* img, int desired_color ){	if( HG_IS_IMAGE(img) )	{		int color = desired_color;		CvSize size = cvGetSize( img ); 		if( color < 0 )			color = img->nChannels > 1;		if( Create( size.width, size.height,			(!color ? 1 : img->nChannels > 1 ? img->nChannels : 3)*8,			img->origin ))		{			cvConvertImage( img, m_img, 0 );		}	}}bool  CvvImage::Load( const char* filename, int desired_color ){	IplImage* img = cvLoadImage( filename, desired_color );	if( !img )		return false;	CopyOf( img, desired_color );	cvReleaseImage( &img );	return true;}bool  CvvImage::LoadRect( const char* filename,	int desired_color, CvRect r ){	if( r.width < 0 || r.height < 0 ) return false;	IplImage* img = cvLoadImage( filename, desired_color );	if( !img )		return false;	if( r.width == 0 || r.height == 0 )	{		r.width = img->width;		r.height = img->height;		r.x = r.y = 0;	}	if( r.x > img->width || r.y > img->height ||		r.x + r.width < 0 || r.y + r.height < 0 )	{		cvReleaseImage( &img );		return false;	}	/* truncate r to source image */	if( r.x < 0 )	{		r.width += r.x;		r.x = 0;	}	if( r.y < 0 )	{		r.height += r.y;		r.y = 0;	}	if( r.x + r.width > img->width )		r.width = img->width - r.x;	if( r.y + r.height > img->height )		r.height = img->height - r.y;	cvSetImageROI( img, r );	CopyOf( img, desired_color );	cvReleaseImage( &img );	return true;}bool  CvvImage::Save( const char* filename ){	if( !m_img )		return false;	cvSaveImage( filename, m_img );	return true;}void  CvvImage::Show( const char* window ){	if( m_img )		cvShowImage( window, m_img );}void  CvvImage::Show( HDC dc, int x, int y, int w, int h, int from_x, int from_y ){	if( m_img && m_img->depth == IPL_DEPTH_8U )	{		uchar buffer[sizeof(BITMAPINFOHEADER) + 1024];		BITMAPINFO* bmi = (BITMAPINFO*)buffer;		int bmp_w = m_img->width, bmp_h = m_img->height;		FillBitmapInfo( bmi, bmp_w, bmp_h, Bpp(), m_img->origin );		from_x = MIN( MAX( from_x, 0 ), bmp_w - 1 );		from_y = MIN( MAX( from_y, 0 ), bmp_h - 1 );		int sw = MAX( MIN( bmp_w - from_x, w ), 0 );		int sh = MAX( MIN( bmp_h - from_y, h ), 0 );		SetDIBitsToDevice(			dc, x, y, sw, sh, from_x, from_y, from_y, sh,			m_img->imageData + from_y*m_img->widthStep,			bmi, DIB_RGB_COLORS );	}}void  CvvImage::DrawToHDC( HDC hDCDst, RECT* pDstRect ) {	if( pDstRect && m_img && m_img->depth == IPL_DEPTH_8U && m_img->imageData )	{		uchar buffer[sizeof(BITMAPINFOHEADER) + 1024];		BITMAPINFO* bmi = (BITMAPINFO*)buffer;		int bmp_w = m_img->width, bmp_h = m_img->height;		CvRect roi = cvGetImageROI( m_img );		CvRect dst = RectToCvRect( *pDstRect );		if( roi.width == dst.width && roi.height == dst.height )		{			Show( hDCDst, dst.x, dst.y, dst.width, dst.height, roi.x, roi.y );			return;		}		if( roi.width > dst.width )		{			SetStretchBltMode(				hDCDst,           // handle to device context				HALFTONE );		}		else		{			SetStretchBltMode(				hDCDst,           // handle to device context				COLORONCOLOR );		}		FillBitmapInfo( bmi, bmp_w, bmp_h, Bpp(), m_img->origin );		::StretchDIBits(			hDCDst,			dst.x, dst.y, dst.width, dst.height,			roi.x, roi.y, roi.width, roi.height,			m_img->imageData, bmi, DIB_RGB_COLORS, SRCCOPY );	}}void  CvvImage::Fill( int color ){	cvSet( m_img, cvScalar(color&255,(color>>8)&255,(color>>16)&255,(color>>24)&255) );}#endif