我使用openCV将视频读入到Visual Studio中,并将其转换为灰度图像,然后使用函数CV_THRESH_BINARY将其转换为二进制图像。然而,帧中存在空洞和噪音。有没有简单的方法来消除这些噪音或空洞?我已经研究了openCV中的腐蚀和膨胀函数,但我并不太清楚如何使用它们。以下是我的代码。如果有人能向我展示如何将去噪过程纳入我的代码中,那将不胜感激。
#include "cv.h"
#include "highgui.h"
int main( int argc, char* argv ) {
CvCapture *capture = NULL;
capture = cvCaptureFromAVI("C:\\walking\\lady walking.avi");
if(!capture){
return -1;
}
IplImage* color_frame = NULL;
IplImage* gray_frame = NULL ;
int thresh_frame = 70;
int frameCount=0;//Counts every 5 frames
cvNamedWindow( "Binary video", CV_WINDOW_AUTOSIZE );
while(1) {
color_frame = cvQueryFrame( capture );//Grabs the frame from a file
if( !color_frame ) break;
gray_frame = cvCreateImage(cvSize(color_frame->width, color_frame->height), color_frame->depth, 1);
if( !color_frame ) break;// If the frame does not exist, quit the loop
frameCount++;
if(frameCount==5)
{
cvCvtColor(color_frame, gray_frame, CV_BGR2GRAY);
cvThreshold(gray_frame, gray_frame, thresh_frame, 255, CV_THRESH_BINARY);
cvShowImage("Binary video", gray_frame);
frameCount=0;
}
char c = cvWaitKey(33);
if( c == 27 ) break;
}
cvReleaseImage(&color_frame);
cvReleaseImage(&gray_frame);
cvReleaseCapture( &capture );
cvDestroyWindow( "Grayscale video" );
return 0;
}