I am doing a sign language to voice recognition ,i am using normalized moments to compare databse images and captured frame , moments are used to calculate the orientation of the image and rotate it so that between orientation and reference angle there's a 5 degree difference ,i am following the method in this thesis link text more explaination of normalizarion is from page 28 to 30 .

The problem is when i am trying to implement the code the results are as follows !

when trying to compare the final result with an image captured by subtracting pixels and defining a threshold value of 80 percent , only input images which are the same give the correct answer , so the problem is in the normalization part but i can't identify how to improve it

this is the normalization method ::

   int normalize2 (const char * imageDB) 
{ 
FILE *fp; 
IplImage* pic1=0 , *pic2=0 , *tempT=0, *tempDB=0 , *temp3=0 , *temp4=0; 
double u11 , u20 , u02 , theta1=0 , compare=0, theta2=0 , theta3=0 , theta=0, ratio=0; 
//int h= 100 , w= 100 ;          // Parameters needed for rotation 
int a=0 , bright=0 , pixel1 =0 , pixel2 =0; 
int threshold = 80 , id=0 , i=0; 
CvMoments moments; 


cvNamedWindow("Tobe_Modified",1); 
cvMoveWindow( "Tobe_Modified", 0, 50); 
cvNamedWindow("final",1); 
cvMoveWindow( "final", 500, 50); 
cvNamedWindow("compare",1);
cvMoveWindow( "compare", 250, 400);


 imageDB="hand.jpg";   

const char * name=0; 

pic2 = cvLoadImage(imageDB,0); 
tempDB = cvCreateImage( cvGetSize(pic2), IPL_DEPTH_8U, 1 ); 
tempDB = cvLoadImage(imageDB,0); 
//cvResize(tempT,tempDB, CV_INTER_AREA);  // Normalize SIZE to standard size of Temp2
int w= cvGetSize(pic2).width/2;    //Set rotation axes from size of image 
int h=cvGetSize(pic2).height/2;


cout<<"widthis"<<w<<"heght is "<<h<<endl;

cvSmooth(tempDB,tempDB,CV_GAUSSIAN,1,1);
ContrastBrightness(tempDB,40,10);
cvThreshold(tempDB,tempDB,100,255,CV_THRESH_BINARY);
cvSaveImage("afternorm.jpg",tempDB);
int f= cvCountNonZero(tempDB);
cout<<f<<"Non Zero Pixels in TEST"<<endl;
GetRotatedImage(tempDB,0,h,w);

cout<<"done first rotation\n"<<endl;

cvSaveImage("FirstRotation.jpg",tempDB);

cvFlip(tempDB,tempDB);
theta1=0;
cout<<"Angle of first image "<<theta1<<endl;

cvShowImage("Tobe_Modified",tempDB);
cvMoments( tempDB, &moments, 1 );   

u11=cvGetCentralMoment( &moments, 1,1 ); 
u20=cvGetCentralMoment( &moments, 2,0 ); 
u02=cvGetCentralMoment( &moments, 0,2 ); 
/////////////////////////////////////// EQ 1 //////////////////////////////////////////////////
theta=2*u11/(u20-u02); 

cout <<" The ANGLE theta in radians  = " <<theta <<endl; 
theta = 180*theta/pi;
cout <<" The ANGLE theta in degree  = " <<theta <<endl; 

if ((theta >=0) & (theta <=pi)) {
//Page 65of 83 
theta2 = 0.5*atan(2*u11/(u20-u02));
cout<<"1"<<endl;
cout<<theta2<<"theta2 in radians in 1st cond"<<endl;
}
else {
if ((theta > pi) & (theta < 1.5*pi)) {
    cout<<"2"<<endl;
    theta2 = 0.5*(atan(2*u11/(u20-u02)) + pi);
cout<<theta2<<"theta2 in radians in 2nd cond"<<endl;
}
else{ 
    cout<<"3"<<endl;
theta2 = 0.5*(atan(2*u11/(u20-u02))+2*pi) ; 
cout<<theta2<<"theta2 in radians in 3rd cond"<<endl;
 }

}
theta2 = 180*theta2/pi;
cout <<"angle theta2 of secnod image in degrees = " <<theta2 <<endl; 


while ( (theta2-theta1 > 3 || theta2-theta1 <- 3) & (a < 360) || (theta1>0) & 
(theta2<0) || (theta1<0) & (theta2>0)) 
{ 
    printf("error b4 2nd rota \n");
tempDB ...

I know this question is asked before but i tried all solutions and it didn't work out in my case , from changing properties linker system adding cvwaity() key all didn't work , also ctrl +f5 didn't work , so can you please help , i need to go on with my project and this is making me late .

the windows opens and closes immediately , sometimes it opens and stays and then when i try running again and it goes back to the habit of closing immediately

//Code for hand detection and tracking;

include <iostream>

include "opencv/cv.h"

include "opencv/highgui.h"

using namespace std;

IplImage image = 0, *hsv = 0, *hue = 0, *mask = 0, *backproject = 0, *histimg = 0,back = 0, back2 = 0,image2 = 0,image3 = 0,bg = 0; CvHistogram *hist = 0;

//IplImage * ContrastBrightness(IplImage *, int , int ); int backproject_mode = 0; int select_object = 0; int track_object = 0; int show_hist = 1;

CvPoint origin; CvPoint RECT1; CvPoint RECT2; CvPoint p1; CvPoint p2;

CvRect selection; CvRect track_window; CvRect roiS; //Rect for size of ROI

CvBox2D track_box;

CvConnectedComp track_comp;

int hdims = 16; float hranges_arr[] = {0,180}; float* hranges = hranges_arr; int vmin = 10, vmax = 256, smin = 30; int area=0; int contrast=100, bright=50,smooth=7; double x,y,h,w;

void on_mouse( int event, int x, int y, int flags, void* param ) { if( !image ) return; if( image->origin ) y = image->height - y;

if( select_object ) { selection.x = MIN(x,origin.x); selection.y = MIN(y,origin.y); selection.width = selection.x + CV_IABS(x - origin.x); selection.height = selection.y + CV_IABS(y - origin.y); selection.x = MAX( selection.x, 0 ); selection.y = MAX( selection.y, 0 ); selection.width = MIN( selection.width, image->width ); selection.height = MIN( selection.height, image->height ); selection.width -= selection.x; selection.height -= selection.y; } switch( event ) { //on left mouse click ,mark as origin and intialize rectangle case CV_EVENT_LBUTTONDOWN: origin = cvPoint(x,y); selection = cvRect(x,y,0,0); select_object = 1; break; case CV_EVENT_LBUTTONUP: select_object = 0; if( selection.width > 0 && selection.height > 0 ) track_object = -1; break; } } //Page 61of 83 //Audible Sign Language FYP Report- Spring 2006 CvScalar hsv2rgb( float hue ) { int rgb[3], p, sector; static const int sector_data[][3]= {{0,2,1}, {1,2,0}, {1,0,2}, {2,0,1}, {2,1,0}, {0,1,2}}; hue = 0.033333333333333333333333333333333f; sector = cvFloor(hue); p = cvRound(255(hue - sector)); p ^= sector & 1 ? 255 : 0; rgb[sector_data[sector][0]] = 255; rgb[sector_data[sector][1]] = 0; rgb[sector_data[sector][2]] = p; return cvScalar(rgb[2], rgb[1], rgb[0],0); } int main( int argc, char** argv ) {

CvCapture* capture = 0; capture = cvCaptureFromCAM(0); //creating 3 windows and co controlling their position cvNamedWindow( "CamShiftDemo", 1 ); cvMoveWindow( "CamShiftDemo", 335, 100 ); cvNamedWindow( "ROI", 1 ); cvMoveWindow( "ROI", 10, 100 ); cvNamedWindow( "grey", 1 ); cvMoveWindow( "grey", 670, 100 );

bg=cvLoadImage ("bg.jpg",1);

//C++: void setMouseCallback(const string& winname, MouseCallback onMouse, void* userdata=0 ) //cvSetMouseCallback( "CamShiftDemo", on_mouse, 0 );

//C++: int createTrackbar(const string& trackbarname, const string& winname, int* value Optional pointer to an integer variable whose value reflects the position of the slider ... (more)