mfc结合OpenCV-2.4.7 初次尝试纯属好奇(OpenCV安装并在vs2010中配置)
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嘿嘿,我也是菜鸟一只。OpenCV也是今天第一次听一位同学说的,最近公司让我搞一个可视对讲的东西所以对视频类的东西稍有兴趣,纯属好奇心太强啊。初次使用就简单做一下笔录也算是如实交代吧。OpenCV的全称是:Open Source Computer Vision Library。OpenCV是一个基于(开源)发行的跨平台计算机视觉库,可以运行Linux、Windows和Mac OS操作系统上。它轻量级而且高效——由一系列 C 函数和少量 C++ 类构成,同时提供了Python、Ruby、MATLAB等语言的接口,实现了图像处理和计算机视觉方面的很多通用算法。我看OpenCV-2.4.7版本人家在android上面也能用,接下来我也去尝试一回。既然是MFC那么你就要有开发工具了,现在大概用vs系列的多一些吧,VC6.0就不说了。有了工具之后咱就得有OpenCV,OpenCV的使用就得经历以下步骤了:
一、下载OpenCV,下载地址为http://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.4.7/OpenCV-2.4.7.exe/download
二、下载完成之后运行,实际上它就开始自解压了。
三、为OpenCV配置环境变量,经常配过的人有经验就是配置bin文件夹,C:\opencv\build\x86\vc10\bin(在刚才解压的目录找到你自己对应的平台)这个我就不说了吧。
四、在vs中配置,新建一个mfc项目。
(1)打开VS菜单栏—>视图—>属性管理器,双击Micrsof.CPP.Win32.user.
(2)在属性页—>通用属性—>VC++目录—>包含目录下加入:
C:\Program Files\opencv2.4.7\build\include;
C:\Program Files\opencv2.4.7\build\include\opencv;
C:\Program Files\opencv2.4.7\build\include\opencv2;
(3)在属性页—>通用属性—>VC++目录—>库目录下加入C:\opencv\build\x86\vc10\lib(看对你自己的目录)。
(4)在属性页->链接器->输入->附加依赖项 里面加入
opencv_calib3d247d.lib
opencv_contrib247d.lib
opencv_core247d.lib
opencv_features2d247d.lib
opencv_flann247d.lib
opencv_gpu247d.lib
opencv_highgui247d.lib
opencv_imgproc247d.lib
opencv_legacy247d.lib
opencv_ml247d.lib
opencv_objdetect247d.lib
opencv_ts247d.lib
opencv_video247d.lib
然后应用确定,配置到此算是完成了。
在头文件中新建CvvImage.h代码为
#pragma once#ifndef CVVIMAGE_CLASS_DEF#define CVVIMAGE_CLASS_DEF#include<opencv2\opencv.hpp>/* CvvImage class definition */class CvvImage{public:CvvImage();virtual ~CvvImage();virtual bool Create( int width, int height, int bits_per_pixel, int image_origin = 0 );virtual bool Load( const char* filename, int desired_color = 1 );virtual bool LoadRect( const char* filename, int desired_color, CvRect r );#if defined WIN32 || defined _WIN32virtual 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 virtual bool Save( const char* filename ); 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); 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 ); virtual void Show( const char* window );#if defined WIN32 || defined _WIN32 virtual void Show( HDC dc, int x, int y, int width, int height, int from_x = 0, int from_y = 0 ); virtual void DrawToHDC( HDC hDCDst, RECT* pDstRect );#endifprotected: IplImage* m_img;};typedef CvvImage CImage;#endif
CvvImage.h的实现为:
#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) );}
在窗体cpp文件中添加引用
#include"CvvImage.h"#include<opencv2\opencv.hpp>
申明全局变量
CvCapture* capture; CRect rect; CDC *pDC; HDC hDC; CWnd *pwnd;
在OnInitDialog()方法中的// TODO: 在此添加额外的初始化代码后添加代码
pwnd = GetDlgItem(IDC_STATIC); pDC =pwnd->GetDC(); hDC= pDC->GetSafeHdc(); pwnd->GetClientRect(&rect);
双击打开按钮添加以下代码
if(!capture) { capture = cvCaptureFromCAM(0); } if (!capture) { AfxMessageBox("无法打开摄像头"); return; } IplImage* m_Frame; m_Frame=cvQueryFrame(capture); CvvImage m_CvvImage; m_CvvImage.CopyOf(m_Frame,1); if (true) { m_CvvImage.DrawToHDC(hDC, &rect); } // 设置计时器,每10ms触发一次事件 SetTimer(1,10,NULL);
双击关闭按钮添加以下代码
cvReleaseCapture(&capture);
右键主窗体选择类向导
搜索信息WM_TIMER双击之后会在函数名称中出现OnTimer然后编辑代码,添加以下代码
IplImage* m_Frame; m_Frame=cvQueryFrame(capture); CvvImage m_CvvImage; m_CvvImage.CopyOf(m_Frame,1); if (true) { m_CvvImage.DrawToHDC(hDC, &rect); } CDialogEx::OnTimer(nIDEvent);
到此完成本次测试。我加了一个抓拍的功能但是有点儿小问题,我会在下篇中继续完善
运行效果为以下
项目源码可以在这里下载。http://download.csdn.net/detail/liu1164316159/6715757
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