first_process.rar_背景提取

#include "cv.h" #include "highgui.h" //自己编的一个彩色图灰度化的函数，其实在cv中有一个库函数可以直接调用 cvCvtColor(pImg1,pImg2, CV_BGR2GRAY); void bgrtogray(IplImage* image_src,IplImage* image_des) { int w=image_src->width,h=image_src->height; for (int i=0;i<h;i++) //行 { for (int k=0;k<w;k++)//列 { uchar B,G,R; B=((uchar*)(image_src->imageData + image_src->widthStep*i))[k*image_src->nChannels+0]; G=((uchar*)(image_src->imageData + image_src->widthStep*i))[k*image_src->nChannels+1]; R=((uchar*)(image_src->imageData + image_src->widthStep*i))[k*image_src->nChannels+2]; ((uchar*)(image_des->imageData + image_des->widthStep*i))[k]=0.114*B+0.587*G+0.299*R; } } } //二值化函数 void threshold(int t1,IplImage* image_s,IplImage* image_d) { for (int i=0;i< image_s->height;i++) //行 { for (int j=0;j< image_s->width;j++) //列 { uchar t=((uchar*)( image_s->imageData + image_s->widthStep*i))[j]; if (t>t1) ((uchar*)( image_d->imageData + image_d->widthStep*i))[j]=255; else ((uchar*)( image_d->imageData + image_d->widthStep*i))[j]=0; } } } //两帧图像做差 void absdiff(CvMat* mat_src1,CvMat* mat_src2,CvMat* mat_des) { for(int x=0; x< mat_src1->rows; x++) //行 { for(int y=0; y< mat_src1->cols; y++) //列 { if (((mat_des->data.fl + mat_des->step/sizeof(float)*x)[y]= (mat_src1->data.fl + mat_src1->step/sizeof(float)*x)[y]- (mat_src2->data.fl + mat_src2->step/sizeof(float)*x)[y])>0) { (mat_des->data.fl + mat_des->step/sizeof(float)*x)[y]= (mat_src1->data.fl + mat_src1->step/sizeof(float)*x)[y]- (mat_src2->data.fl + mat_src2->step/sizeof(float)*x)[y]; } else { (mat_des->data.fl + mat_des->step/sizeof(float)*x)[y]= (mat_src2->data.fl + mat_src2->step/sizeof(float)*x)[y]- (mat_src1->data.fl + mat_src1->step/sizeof(float)*x)[y]; } } } } void main() { IplImage* pImg1=NULL; //声明IplImage指针 IplImage* pImg2=NULL; IplImage* pImg3=NULL; IplImage* pImg4=NULL; IplImage* pImg5=NULL; IplImage* pImg6=NULL; IplImage* pImg7=NULL; //载入图像 pImg1 = cvLoadImage( "E:\\图片\\头像\\头像.jpg",1); pImg4 = cvLoadImage( "E:\\图片\\头像\\背景1.jpg",1); cvNamedWindow( "Image_src", 1 );//创建窗口 cvShowImage( "Image_src", pImg1 );//显示图像 pImg2= cvCreateImage(cvSize(pImg1->width, pImg1->height),IPL_DEPTH_8U,1);//申请一个空间用于存放灰度化后的图形 pImg3= cvCreateImage(cvSize(pImg1->width, pImg1->height),IPL_DEPTH_8U,1); pImg5= cvCreateImage(cvSize(pImg1->width, pImg1->height),IPL_DEPTH_8U,1); pImg6= cvCreateImage(cvSize(pImg1->width, pImg1->height),IPL_DEPTH_8U,1);//申请一个空间用于存放灰度化后的图形 pImg7= cvCreateImage(cvSize(pImg1->width, pImg1->height),IPL_DEPTH_8U,1); bgrtogray(pImg1,pImg2); bgrtogray(pImg4,pImg5); // pFrameMat = cvCreateMat(pImg1->height, pImg1->width, CV_32FC1); //视频输入帧的矩阵形式 // pBkMat = cvCreateMat(pImg4->height, pImg4->width, CV_32FC1);//背景矩阵 // pdes=cvCreateMat(pImg5->height, pImg5->width, CV_32FC1); cvAbsDiff( pImg2, pImg5 , pImg6 ); threshold(100,pImg2,pImg3); cvNot(pImg6,pImg7); cvCvtColor(pImg1,pImg2, CV_BGR2GRAY); cvNamedWindow( "Image_des", 1 ); //创建窗口 cvShowImage( "Image_des", pImg2 );//显示图像 cvNamedWindow( "Image_tra", 1 ); //创建窗口 cvShowImage( "Image_tra", pImg3 );//显示图像 cvNamedWindow( "Image_debak", 1 ); //创建窗口 cvShowImage( "Image_debak", pImg7);//显示图像 cvWaitKey(0); //等待按键 cvDestroyWindow( "Image_src" ); cvDestroyWindow( "Image_des" ); cvDestroyWindow( "Image_tra" ); cvDestroyWindow( "Image_debak" );//销毁窗口 cvReleaseImage( &pImg1 ); cvReleaseImage( &pImg2 ); cvReleaseImage( &pImg3 ); cvReleaseImage( &pImg4 ); cvReleaseImage( &pImg5 ); cvReleaseImage( &pImg6 ); cvReleaseImage( &pImg7 );//释放图像 //return 0; }