轉自：http://blog.csdn.net/raocong2010/archive/2011/01/17/6146158.aspx#

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前幾日，OpenCV 2.2.0版本出現了...但是...以前版本的CvvImage類不見了...為了能夠繼續使用這個類，下面把這個類的源代碼貼出來，使用的時候將該代碼加入到工程中便可以使用了。為了方便切換OpenCV的版本，這里用到了一些條件編譯宏，來保證代碼的靈活性。

????? 不過OpenCV 2.2.0取消CvvImage這個類，一定是有它的原因的，具體可以在做實驗的時候體會這些原因。

????? CvvImage頭文件

#ifndef CVVIMAGE_CLASS_DEF
#define CVVIMAGE_CLASS_DEF

#include <cv.h>
#include <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 );
#endif

protected:

??? IplImage*? m_img;
};

typedef CvvImage CImage;

#endif

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CvvImage源文件

#include "public.h"

#ifndef RC_OPENCV_2_1_0 // 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 // RC_OPENCV_2_1_0

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public.h文件

#pragma once

#undef RC_OPENCV_2_1_0

/** 使用OpenCV 2.2.0, 則不定義下面的宏 */
/** #define RC_OPENCV_2_1_0 */

#ifdef _DEBUG
??? #ifdef RC_OPENCV_2_1_0
??????? #pragma comment( lib, "cxcore210d.lib" )
??????? #pragma comment( lib, "cv210d.lib" )
??????? #pragma comment( lib, "highgui210d.lib" )
??? #else
??????? #pragma comment( lib, "opencv_core220d.lib" )
??????? #pragma comment( lib, "opencv_highgui220d.lib" )
??????? #pragma comment( lib, "opencv_imgproc220d.lib" )
??? #endif
#else
??? #ifdef RC_OPENCV_2_1_0
??????? #pragma comment( lib, "cxcore210.lib" )
??????? #pragma comment( lib, "cv210.lib" )
??????? #pragma comment( lib, "highgui210.lib" )
??? #else
??????? #pragma comment( lib, "opencv_core220.lib" )
??????? #pragma comment( lib, "opencv_highgui220.lib" )
??????? #pragma comment( lib, "opencv_imgproc220.lib" )
??? #endif
#endif

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