h_mahmoodian's profile - activity

i use below code for capture video from camera.I do processing ,but i have a problem. I calculate fps but for all frame i see fps=0 and CV_CAP_PROP_FPS=5. how can i calculate fps of my camera?

#include "opencv2/opencv.hpp"
#include <stdio.h>
#include <conio.h>

using namespace cv;
using namespace std;

int main(int, char**)
{
int k=0;
//VideoCapture cap("e:/hassan_1.avi"); // open the default camera
//VideoCapture cap("d:/1.mpg"); // open the default camera
VideoCapture cap(-1);
if(!cap.isOpened())  // check if we succeeded
return -1;
int fps=(float) cap.get(CV_CAP_PROP_FPS)+0.5;
int totalframes=(int) cap.get(CV_CAP_PROP_FRAME_COUNT);
cout<<"total frames ="<<totalframes<<endl;
cout<<"fps= "<<fps<<endl;
getch();
bool stop(false);
Mat edges;
namedWindow("edges",1);
while(!stop)
{
Mat frame;
cap >> frame; // get a new frame from camera
int fps=(int) cap.get(CV_CAP_PROP_FPS)+0.5;
//int totalframes=(int) cap.get(CV_CAP_PROP_FRAME_COUNT);
//cout<<"total frames ="<<totalframes<<endl;
cout<<"fps= "<<fps<<endl;
//double delay=1000/fps;
cvtColor(frame, edges, CV_BGR2GRAY);
GaussianBlur(edges, edges, Size(7,7), 1.5, 1.5);
Canny(edges, edges, 0, 30, 3);
imshow("edges", edges);


k++;
//cout<<k<<endl;
//getch();
if (waitKey(10)>=0)
stop= true;
}
cap.release();
cout<<"number of frames that do processing on them= "<<k<<endl;
getch();
// the camera will be deinitialized automatically in VideoCapture destructor
return 0;
}

I do not press any key ,but when run my code i see error at 804 th frame

i create project in vs2012 with opencv learning name.

I have written some code to read a video and do some processing on it.

int totalframes=(int) cap.get(CV_CAP_PROP_FRAME_COUNT);

total frames=1707

int fps=(int) cap.get(CV_CAP_PROP_FPS);

fps=30

I do processing on each frame but my code does it for only 804 frames. How can I do the processing for all frames? After processing 804 frames ,i see this text:

Unhandled exception at at 0x75299617 in opencv learning.exe: Microsoft C++ exception: cv::Exception at memory location 0x0041B778.

this is a .avi video format.

Can you please help me to solve this problem? I use windows 7,visual studio 2012,opencv 2.4.6 for processing this video file. my code:

#include "opencv2/opencv.hpp"
#include <stdio.h>
#include <conio.h>

using namespace cv;
using namespace std;

int main(int, char**)
{
int k=0;
VideoCapture cap("f:/video for test/hassan_1.avi"); // open the default camera
if(!cap.isOpened())  // check if we succeeded
  return -1;
bool stop(false);
Mat edges;
namedWindow("edges",1);
while(!stop)
{
    Mat frame;
    cap >> frame; // get a new frame from camera
    int fps=(int) cap.get(CV_CAP_PROP_FPS);
    int totalframes=(int) cap.get(CV_CAP_PROP_FRAME_COUNT);
    double delay=1000/fps;
    cvtColor(frame, edges, CV_BGR2GRAY);
    GaussianBlur(edges, edges, Size(7,7), 1.5, 1.5);
    Canny(edges, edges, 0, 30, 3);
    imshow("edges", edges);


    k++;
    if (waitKey(delay)>=0)
    stop= true;
   }
cap.release();
cout<<"number of frames that do processing on them= "<<k<<endl;
getch();
// the camera will be deinitialized automatically in VideoCapture destructor
return 0;
}

i use A4TECH usb camera on my pc. When i run my code i see empty window but when i debug my code (by press F10 key) i can see frame that is captured by camera.How can i fix this problem? i use vs2012,windows 7,OPENCV2.4.6 AND C code

i use video file c:\happy_0014_1.mpg for test.i want to know add fg-net dataset to program.i have tow fg-net dataset:one of them consists video files and other consists images.i think that i should creat text file and copy dataset images.please help me

i read a pdf file that is use FG-NET dataset to train svm. FG-NET Facial Expression and Emotion Database consists of MPEG video files with spontaneous emotions recorded. Database contains examples gathered from 18 subjects ( 9 female and 9 male). Proposed system was trained with captured video frames in which the displayed emotion is very representative. The training set consists of 675 images of seven states neutral and emotional (surprise, fear, disgust, sadness, happiness and anger). inputdir , outputdir,path words that used in this c++ program ,how can i define inputdir,outputdir,path? how i can define path to load dataset for both train and test steps?(ex c:\feed\dataset...) i upload program at:http://rapidshare.com/share/15E45C30BB237A797F355EC82F09B8C1