GANESH PRASAATH L's profile - activity

sorry edited the question

thank you berak it worked

I tried calculating Local Binary Pattern for an image.

#include "opencv2/core/core.hpp"
#include "opencv2/contrib/contrib.hpp"
#include "opencv2/highgui/highgui.hpp"

#include <iostream>
#include <fstream>
#include <sstream>

using namespace cv;
using namespace std;


int main() 
{
    Mat img=imread("G:/Capture.png");
    Mat dst = Mat::zeros(img.rows-2, img.cols-2, CV_8UC1);
    for(int i=1;i<img.rows-1;i++) 
    {
        for(int j=1;j<img.cols-1;j++) 
        {
            uchar center = img.at<uchar>(i,j);
            unsigned char code = 0;
            code |= ((img.at<uchar>(i-1,j-1)) > center) << 7;
            code |= ((img.at<uchar>(i-1,j)) > center) << 6;
            code |= ((img.at<uchar>(i-1,j+1)) > center) << 5;
            code |= ((img.at<uchar>(i,j+1)) > center) << 4;
            code |= ((img.at<uchar>(i+1,j+1)) > center) << 3;
            code |= ((img.at<uchar>(i+1,j)) > center) << 2;
            code |= ((img.at<uchar>(i+1,j-1)) > center) << 1;
            code |= ((img.at<uchar>(i,j-1)) > center) << 0;
            dst.at<uchar>(i-1,j-1) = code;
        }
    }
        imshow("LBP",dst);
        imshow("Source",img);
        waitKey(0);
    return 0;
}

The output images are:

The LBP image is not complete.

But What I expect is :

the following lines show error

Size shist = frame.size();
int histrows = shist.height;
int histcols = shist.width;
for(int igan=0;igan<histrows;igan++)
for(int jgan=0;jgan<histcols;jgan++)
 if(fore.at<uchar>(igan,jgan)!=0)
 forhistogram.at<uchar>(igan,jgan)=frame.at<uchar>(igan,jgan);
 else
 forhistogram.at<uchar>(igan,jgan)=0;

please reply what is wrong because the last 6 lines show error

I tried people counting using HOG descriptor. When the program is compiled, the last part of the program for people counting shows errors.

  HOGDescriptor hog;
    hog.setSVMDetector(HOGDescriptor::getDefaultPeopleDetector());
    namedWindow("people detector", 1);
    int required,incoming,outgoing;
  required=0;
  incoming=0;
   outgoing=0;
    for(;;)
    {
        vector<Rect> found, found_filtered;
        double t = (double)getTickCount();
        hog.detectMultiScale(img, found, 0, Size(8,8), Size(32,32), 1.05, 2);
        t = (double)getTickCount() - t;
        printf("tdetection time = %gms\n", t*1000./cv::getTickFrequency());
        size_t i, j;
        for( i = 0; i < found.size(); i++ )
        {
            Rect r = found[i];
            for( j = 0; j < found.size(); j++ )
                if( j != i && (r & found[j]) == r)
                    break;
            if( j == found.size() )
                found_filtered.push_back(r);
        }
Point pt,ptretrieve;

vector<vector<Point>>rectcount;
for(i=0;i<found_filtered.size();i++)
{
Rect r = found_filtered[i];
pt.x=r.tl().x+(r.br().x-r.tl().x)/2;
pt.y=r.tl().y+(r.br().y-r.tl().y)/2;
for(ii=0;ii<found_filtered.size();ii++)
{
ptretrieve=rectcount[ii].back;
if(pt.x-ptretrieve.x<=3&&pt.y-ptretrieve.y<=3)
{
required=ii;
break;
}
}
ptretrieve=rectcount[required].back;
if(pt.x==150&&ptretrieve.x==151)
incoming++;
if(pt.x==150&&ptretrieve.x==149)
ougoing++;
rectcount[required].push_back(pt);
}

thanks working on it

i have tried below example to subtract Image's background, its working well and updates position of the object but for the first time i mean when camera starts if i move an object from its initial position to some other position, its initial position Blob is not getting erased. Here's my code:

#include < iostream>
#include < opencv2\opencv.hpp>
#include < opencv2/core/core.hpp>
#include < opencv2/highgui/highgui.hpp>
#include < opencv2/video/background_segm.hpp>

using namespace cv;
using namespace std;

int main()
{
//global variables
Mat frame; //current frame
Mat resizeF;
Mat fgMaskMOG; //fg mask generated by MOG method
Mat fgMaskMOG2; //fg mask fg mask generated by MOG2 method
Mat fgMaskGMG; //fg mask fg mask generated by MOG2 method
Ptr< BackgroundSubtractor> pMOG; //MOG Background subtractor
Ptr< BackgroundSubtractor> pMOG2; //MOG2 Background subtractor
Ptr< BackgroundSubtractorGMG> pGMG; //MOG2 Background subtractor
pMOG = new BackgroundSubtractorMOG();
pMOG2 = new BackgroundSubtractorMOG2();
pGMG = new BackgroundSubtractorGMG();
char fileName[100] = "F:/Project/ShopAssistant2cor.mpg"; 
VideoCapture stream1(fileName);
Mat element = getStructuringElement(MORPH_RECT, Size(3, 3), Point(1,1) );

while (true) {
Mat cameraFrame;
if(!(stream1.read(frame))) 
break;

Mat resizeF=frame;
pMOG->operator()(resizeF, fgMaskMOG);
pMOG2->operator()(resizeF, fgMaskMOG2);
pGMG->operator()(resizeF, fgMaskGMG);

imshow("Origin", resizeF);
imshow("MOG", fgMaskMOG);
imshow("MOG2", fgMaskMOG2);
imshow("GMG", fgMaskGMG);
if (waitKey(30) >= 0)
break;
}
}

thanks berak

Please provide complete instruction set for vector

Check whether haarcascade_eye_tree_eyeglasses.xml is available correctly. Try to extract opencv package again.

Please refer the links http://answers.opencv.org/question/78... http://answers.opencv.org/question/74...

I executed this code. No error was shown.It really works.

using C++ , I need to implement pedestrian counting

I read this post : http://answers.opencv.org/question/22...

But I have very little idea of how to implement it.

I installed Visual Studio 2010 and opencv 2.4.9 in windows 7 64 bit. When I use X64 for library, there is a link error showing incompatible with machine. When X86 is used, errors are shown for dll files missing. After providing dll files one by one, finally there is compilation error. How to execute opencv c++ programs?????

it does not work

did the same but that does not work

fatal error C1083: Cannot open include file: 'string/string.h': No such file or directory

http://docs.opencv.org/2.4/modules/im...

This would help https://karanjthakkar.wordpress.com/2...

Speed doesnot depend on OS, it depends only on processor

exactly code was compiled but dont know why there is exception error

now replaced variable name 'new' with 'frame' sorry to post the wrong code

i have implemented using MS visual studio 2010 and opencv 2.4.9

    #include "opencv2/objdetect/objdetect.hpp"
 #include "opencv2/highgui/highgui.hpp"
 #include "opencv2/imgproc/imgproc.hpp"

 #include "iostream"
 #include "stdio.h"

using namespace std;
using namespace cv;

int main()
{
    Mat frame=imread("F:\\new.jpg");
    namedWindow("HAAR");
    CascadeClassifier face_cascade; 
    vector<Rect> faces;
    Mat frame_gray;

    cvtColor( frame, frame_gray, CV_BGR2GRAY );
    equalizeHist( frame_gray, frame_gray );
    if( !face_cascade.load( "haarcascade_frontalface_alt.xml") )
    { 
      printf("--(!)Error loading\n");
      return -1;
    };
    face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CV_HAAR_SCALE_IMAGE, Size(30, 30) );
    for( size_t i = 0; i < faces.size(); i++ )
    {
         Point center( faces[i].x + faces[i].width*0.5, faces[i].y + faces[i].height*0.5 );
         ellipse( frame, center, Size( faces[i].width*0.5, faces[i].height*0.5), 0, 0, 360, Scalar( 255, 0, 255 ), 4, 8, 0 );
    }
    imshow("HAAR", frame );
}


----------

I could not compile my code and I get the following exception error always. Unhandled exception at 0x74c7b760 (KernelBase.dll) in firstexample.exe: Microsoft C++ exception: cv::Exception at memory location 0x0013afe4.. at some times errors are shown

given below is my code

#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"

#include <iostream>
#include <stdio.h>

using namespace std;
using namespace cv;

int main()
{
    Mat new=imread("F:\new.jpg");
    namedWindow("HAAR");
    CascadeClassifier face_cascade; 
    vector<Rect> faces;
    Mat frame_gray;

    cvtColor( new, frame_gray, CV_BGR2GRAY );
    equalizeHist( frame_gray, frame_gray );
    if( !face_cascade.load( "haarcascade_frontalface_alt.xml") )
    { 
      printf("--(!)Error loading\n");
      return -1;
    };
    face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CV_HAAR_SCALE_IMAGE, Size(30, 30) );
    for( size_t i = 0; i < faces.size(); i++ )
    {
         Point center( faces[i].x + faces[i].width*0.5, faces[i].y + faces[i].height*0.5 );
         ellipse( frame, center, Size( faces[i].width*0.5, faces[i].height*0.5), 0, 0, 360, Scalar( 255, 0, 255 ), 4, 8, 0 );
    }
    imshow("HAAR", frame );
}

MS visual studio 2010 and opencv 2.4.9 are used. no error is displayed build is successful

Speed depends on clock speed

How to solve the error 'could not locate Cl.exe'