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利用VS+MFC+Opencv显示图像和视频所需添加类（CvvImage.h和CvvImage.cpp的源码）。

發(fā)布時(shí)間：2023/11/27 生活经验 34 豆豆

生活随笔收集整理的這篇文章主要介紹了利用VS+MFC+Opencv显示图像和视频所需添加类（CvvImage.h和CvvImage.cpp的源码）。小編覺得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.

CvvImage.h代碼：

#pragma?once??
#ifndef?CVVIMAGE_CLASS_DEF??
#define?CVVIMAGE_CLASS_DEF??
#include?"opencv.hpp"??
/*?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?

CvvImage.cpp代碼：

#include?"StdAfx.h"??
#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)?);??
}?

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