//VERSION: HAND DETECTION 1.0

//AUTHOR: ANDOL LI@CW3/18, Live:lab

//PROJECT: HAND DETECTION PROTOTYPE

//LAST UPDATED: 03/2009



#include "cv.h"

#include "cxcore.h"

#include "highgui.h"

#include "math.h"

#include <iostream>

#include <stdio.h>

#include <string.h>

#include <conio.h>

#include <sstream>

#include <time.h>





using namespace std;

/* 

--------------------------------------------*/

int main()

{

	int c = 0;

	CvSeq* a = 0;

    CvCapture* capture = cvCaptureFromCAM(0);

		if(!cvQueryFrame(capture)){ cout<<"Video capture failed, please check the camera."<<endl;}else{cout<<"Video camera capture status: OK"<<endl;};

    CvSize sz = cvGetSize(cvQueryFrame( capture));

	IplImage* src = cvCreateImage( sz, 8, 3 );

	IplImage* hsv_image = cvCreateImage( sz, 8, 3);

	IplImage* hsv_mask = cvCreateImage( sz, 8, 1);

	IplImage* hsv_edge = cvCreateImage( sz, 8, 1);

	

	CvScalar  hsv_min = cvScalar(0, 30, 80, 0);

	CvScalar  hsv_max = cvScalar(20, 150, 255, 0);

	//

	CvMemStorage* storage = cvCreateMemStorage(0);

	CvMemStorage* areastorage = cvCreateMemStorage(0);

	CvMemStorage* minStorage = cvCreateMemStorage(0);

	CvMemStorage* dftStorage = cvCreateMemStorage(0);

	CvSeq* contours = NULL;

	//

	cvNamedWindow( "src",1);

	//cvNamedWindow( "hsv-msk",1);

	//cvNamedWindow( "contour",1);

	//////

	while( c != 27)

	{

		IplImage* bg = cvCreateImage( sz, 8, 3);

		cvRectangle( bg, cvPoint(0,0), cvPoint(bg->width,bg->height), CV_RGB( 255, 255, 255), -1, 8, 0 );

			bg->origin = 1;

		for(int b = 0; b< int(bg->width/10); b++)

		{

			cvLine( bg, cvPoint(b*20, 0), cvPoint(b*20, bg->height), CV_RGB( 200, 200, 200), 1, 8, 0 );

			cvLine( bg, cvPoint(0, b*20), cvPoint(bg->width, b*20), CV_RGB( 200, 200, 200), 1, 8, 0 );

		}



		src = cvQueryFrame( capture);

		cvCvtColor(src, hsv_image, CV_BGR2HSV);



		cvInRangeS (hsv_image, hsv_min, hsv_max, hsv_mask);

		cvSmooth( hsv_mask, hsv_mask, CV_MEDIAN, 27, 0, 0, 0 );

		cvCanny(hsv_mask, hsv_edge, 1, 3, 5);



		cvFindContours( hsv_mask, storage, &contours, sizeof(CvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0) );

			CvSeq* contours2 = NULL;

			double result = 0, result2 = 0;

		while(contours)

		{

			result = fabs( cvContourArea( contours, CV_WHOLE_SEQ ) );

			if ( result > result2) {result2 = result; contours2 = contours;};

			contours  =  contours->h_next;

		}

		if ( contours2 )

		{

			//cout << "contours2: " << contours2->total << endl;

			CvRect rect = cvBoundingRect( contours2, 0 );

			cvRectangle( bg, cvPoint(rect.x, rect.y + rect.height), cvPoint(rect.x + rect.width, rect.y), CV_RGB(200, 0, 200), 1, 8, 0 );

			//cout << "Ratio: " << rect.width << ", " << rect.height << ", " << (float)rect.width / rect.height << endl;

			int checkcxt = cvCheckContourConvexity( contours2 );

				//cout << checkcxt <<endl;

			CvSeq* hull = cvConvexHull2( contours2, 0, CV_CLOCKWISE, 0 );

			CvSeq* defect = cvConvexityDefects( contours2, hull, dftStorage );

			if( defect->total >=40 ) {cout << " Closed Palm " << endl;}

			else if( defect->total >=30 && defect->total <40 ) {cout << " Open Palm " << endl;}

			else{ cout << " Fist " << endl;}

			cout << "defet: " << defect->total << endl;



			CvBox2D box = cvMinAreaRect2( contours2, minStorage );

			//cout << "box angle: " << (int)box.angle << endl;

			cvCircle( bg, cvPoint(box.center.x, box.center.y), 3, CV_RGB(200, 0, 200), 2, 8, 0 );	

			cvEllipse( bg, cvPoint(box.center.x, box.center.y), cvSize(box.size.height/2, box.size.width/2), box.angle, 0, 360, CV_RGB(220, 0, 220), 1, 8, 0 );

				//cout << "Ratio: " << (float)box.size.width/box.size.height <<endl;

		}

			//cvShowImage( "hsv-msk", hsv_mask); hsv_mask->origin = 1;

			//IplImage* contour = cvCreateImage( sz, 8, 3 );

		

		cvDrawContours( bg, contours2,  CV_RGB( 0, 200, 0), CV_RGB( 0, 100, 0), 1, 1, 8, cvPoint(0,0));

			cvShowImage( "src", src);

			//contour->origin = 1; cvShowImage( "contour", contour);

			//cvReleaseImage( &contour);



		cvNamedWindow("bg",0); 

		cvShowImage("bg",bg); 

		cvReleaseImage( &bg);









		c = cvWaitKey( 10);

	}

	//////

	cvReleaseCapture( &capture);

	cvDestroyAllWindows();



}