視訊採集與運動檢測原始碼
阿新 • • 發佈:2019-01-03
#include <stdio.h>
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>
int main( int argc, char** argv )
{
//宣告IplImage指標
IplImage* pFrame = NULL;
IplImage* pFrImg = NULL;
IplImage* pBkImg = NULL;
CvMat* pFrameMat = NULL;
CvMat* pFrMat = NULL;
CvMat* pBkMat = NULL;
CvCapture* pCapture = NULL;
int nFrmNum = 0;
//建立視窗
cvNamedWindow("video", 1);
cvNamedWindow("background",1);
cvNamedWindow("foreground",1);
//使視窗有序排列
cvMoveWindow("video", 30, 0);
cvMoveWindow("background", 360, 0);
cvMoveWindow("foreground", 690, 0);
if( argc > 2 )
{
fprintf(stderr, "Usage: bkgrd [video_file_name]/n");
return -1; }
//開啟攝像頭
if (argc ==1)
if( !(pCapture = cvCaptureFromCAM(-1))) //只有一個攝像頭時為-1
{
fprintf(stderr, "Can not open camera./n"); return -2;
}
//開啟視訊檔案
if(argc == 2)
if( !(pCapture = cvCaptureFromFile(argv[1])))
{
fprintf(stderr, "Can not open video file %s/n", argv[1]);
return -2;
}
//逐幀讀取視訊
while(pFrame = cvQueryFrame( pCapture )) //從攝像頭或者檔案中抓取並返回一幀
{
nFrmNum++;
//如果是第一幀,需要申請記憶體,並初始化
if(nFrmNum == 1)
{
pBkImg = cvCreateImage(cvSize(pFrame->width, pFrame->height), IPL_DEPTH_8U,1);
pFrImg = cvCreateImage(cvSize(pFrame->width, pFrame->height), IPL_DEPTH_8U,1);
pBkMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1); //分配矩陣 cvCreateMat(int rows,int cols, int type);
pFrMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);
pFrameMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);
//轉化成單通道影象再處理
cvCvtColor(pFrame, pBkImg, CV_BGR2GRAY);
cvCvtColor(pFrame, pFrImg, CV_BGR2GRAY);
cvConvert(pFrImg, pFrameMat);//cvCvtColor一般是用來做不同depth圖象之間的轉換
cvConvert(pFrImg, pFrMat); //如8u的圖象轉換成32f的圖象
cvConvert(pFrImg, pBkMat);
}
else
{
cvCvtColor(pFrame, pFrImg, CV_BGR2GRAY);//彩色空間轉換cvCvtColor(src,dst,code) code:CV_RGB,BGR,GRAY,等等
cvConvert(pFrImg, pFrameMat);
//高斯濾波先,以平滑影象//
cvSmooth(pFrameMat, pFrameMat, CV_GAUSSIAN, 3, 0, 0);
//當前幀跟背景圖相減
cvAbsDiff(pFrameMat, pBkMat, pFrMat);
//二值化前景圖
cvThreshold(pFrMat, pFrImg, 60, 255.0, CV_THRESH_BINARY);
//進行形態學濾波,去掉噪音 //
cvErode(pFrImg, pFrImg, 0, 1); //
cvDilate(pFrImg, pFrImg, 0, 1);
//更新背景
cvRunningAvg(pFrameMat, pBkMat, 0.003, 0);
//將背景轉化為影象格式,用以顯示
cvConvert(pBkMat, pBkImg);
//顯示影象
cvShowImage("video", pFrame);
cvShowImage("background", pBkImg);
cvShowImage("foreground", pFrImg);
//如果有按鍵事件,則跳出迴圈 //此等待也為cvShowImage函式提供時間完成顯示
//等待時間可以根據CPU速度調整
if( cvWaitKey(2) >= 0 )
break;
}
}
//銷燬視窗
cvDestroyWindow("video");
cvDestroyWindow("background");
cvDestroyWindow("foreground");
//釋放影象和矩陣
cvReleaseImage(&pFrImg);
cvReleaseImage(&pBkImg);
cvReleaseMat(&pFrameMat);
cvReleaseMat(&pFrMat);
cvReleaseMat(&pBkMat);
cvReleaseCapture(&pCapture);
return 0;
}
#include <cv.h>
#include <cxcore.h>
#include <highgui.h>
int main( int argc, char** argv )
{
//宣告IplImage指標
IplImage* pFrame = NULL;
IplImage* pFrImg = NULL;
IplImage* pBkImg = NULL;
CvMat* pFrameMat = NULL;
CvMat* pFrMat = NULL;
CvMat* pBkMat = NULL;
CvCapture* pCapture = NULL;
int nFrmNum = 0;
//建立視窗
cvNamedWindow("video", 1);
cvNamedWindow("background",1);
cvNamedWindow("foreground",1);
//使視窗有序排列
cvMoveWindow("video", 30, 0);
cvMoveWindow("background", 360, 0);
cvMoveWindow("foreground", 690, 0);
if( argc > 2 )
{
fprintf(stderr, "Usage: bkgrd [video_file_name]/n");
return -1; }
//開啟攝像頭
if (argc ==1)
if( !(pCapture = cvCaptureFromCAM(-1))) //只有一個攝像頭時為-1
{
fprintf(stderr, "Can not open camera./n"); return -2;
}
//開啟視訊檔案
if(argc == 2)
if( !(pCapture = cvCaptureFromFile(argv[1])))
{
fprintf(stderr, "Can not open video file %s/n", argv[1]);
return -2;
}
//逐幀讀取視訊
while(pFrame = cvQueryFrame( pCapture )) //從攝像頭或者檔案中抓取並返回一幀
{
nFrmNum++;
//如果是第一幀,需要申請記憶體,並初始化
if(nFrmNum == 1)
{
pBkImg = cvCreateImage(cvSize(pFrame->width, pFrame->height), IPL_DEPTH_8U,1);
pFrImg = cvCreateImage(cvSize(pFrame->width, pFrame->height), IPL_DEPTH_8U,1);
pBkMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1); //分配矩陣 cvCreateMat(int rows,int cols, int type);
pFrMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);
pFrameMat = cvCreateMat(pFrame->height, pFrame->width, CV_32FC1);
//轉化成單通道影象再處理
cvCvtColor(pFrame, pBkImg, CV_BGR2GRAY);
cvCvtColor(pFrame, pFrImg, CV_BGR2GRAY);
cvConvert(pFrImg, pFrameMat);//cvCvtColor一般是用來做不同depth圖象之間的轉換
cvConvert(pFrImg, pFrMat); //如8u的圖象轉換成32f的圖象
cvConvert(pFrImg, pBkMat);
}
else
{
cvCvtColor(pFrame, pFrImg, CV_BGR2GRAY);//彩色空間轉換cvCvtColor(src,dst,code) code:CV_RGB,BGR,GRAY,等等
cvConvert(pFrImg, pFrameMat);
//高斯濾波先,以平滑影象//
cvSmooth(pFrameMat, pFrameMat, CV_GAUSSIAN, 3, 0, 0);
//當前幀跟背景圖相減
cvAbsDiff(pFrameMat, pBkMat, pFrMat);
//二值化前景圖
cvThreshold(pFrMat, pFrImg, 60, 255.0, CV_THRESH_BINARY);
//進行形態學濾波,去掉噪音 //
cvErode(pFrImg, pFrImg, 0, 1); //
cvDilate(pFrImg, pFrImg, 0, 1);
//更新背景
cvRunningAvg(pFrameMat, pBkMat, 0.003, 0);
//將背景轉化為影象格式,用以顯示
cvConvert(pBkMat, pBkImg);
//顯示影象
cvShowImage("video", pFrame);
cvShowImage("background", pBkImg);
cvShowImage("foreground", pFrImg);
//如果有按鍵事件,則跳出迴圈 //此等待也為cvShowImage函式提供時間完成顯示
//等待時間可以根據CPU速度調整
if( cvWaitKey(2) >= 0 )
break;
}
}
//銷燬視窗
cvDestroyWindow("video");
cvDestroyWindow("background");
cvDestroyWindow("foreground");
//釋放影象和矩陣
cvReleaseImage(&pFrImg);
cvReleaseImage(&pBkImg);
cvReleaseMat(&pFrameMat);
cvReleaseMat(&pFrMat);
cvReleaseMat(&pBkMat);
cvReleaseCapture(&pCapture);
return 0;
}