#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include "cvcam.h"
#include "cv.h"
#include "highgui.h"

/************************************************************************
 * 
 ************************************************************************/
int main( int argc, char** argv )
{
  IplImage* frame, *frame_copy = 0;
  uchar *data;
  int height,width,step,channels;
  int minx,miny,maxx,maxy;
  int i,j,k;


	 if( argc == 2 && (frame=cvLoadImage(argv[1], 1))!= 0) 
	 {
		 if( !frame )
			 exit(0);
	 }

	 cvNamedWindow( "result", 1 );


	 if( !frame_copy )
                frame_copy = cvCreateImage( cvSize(frame->width,frame->height),
                                            IPL_DEPTH_8U, frame->nChannels );
     if( frame->origin == IPL_ORIGIN_TL )
           cvCopy( frame, frame_copy, 0 );
     else
           cvFlip( frame, frame_copy, 0 );
            
    // get the image data
    height    = frame->height;
    width     = frame->width;
    step      = frame->widthStep;
    channels  = frame->nChannels;
    data = (uchar *)frame->imageData;
    printf("Processing a %dx%d image with %d channels\n",height,width,channels);

    for(i=0;i<height;i++) for(j=0;j<width;j++) 
	{
		if ((data[i*step+j*channels+0] >= 115 && data[i*step+j*channels+0] <= 135) &&     
		    (data[i*step+j*channels+1] >=  17 && data[i*step+j*channels+1] <=  30) &&
			(data[i*step+j*channels+2] >=   0 && data[i*step+j*channels+2] <=  25))
		{ 
			 data[i*step+j*channels+0]=255;          
			 data[i*step+j*channels+1]=255;
			 data[i*step+j*channels+2]=255;
		}
		else
		{ 
			 data[i*step+j*channels+0]=0;          
			 data[i*step+j*channels+1]=0;
			 data[i*step+j*channels+2]=0;
		}
	}
 
	// Exibe região com a cor segmentada
	cvShowImage("result", frame );

	cvWaitKey(0);


    // Procura as bordas que definem a região segmentada
	minx=miny= 9999;
	maxx=maxy=-9999;
    for(i=0;i<height;i++) 
		for(j=0;j<width;j++) 
	{
        if (data[i*step+j*channels+0] != 0) 
		{
		   if (i < miny) miny=i;
		   if (i > maxy) maxy=i;
		   if (j < minx) minx=j;
		   if (j > maxx) maxx=j;
		}
	}
	printf ("Bounding Box: Xi,Yi(%d,%d) to Xf,Yf(%d,%d)\n",minx,miny,maxx,maxy);

	// Exibe região com a cor segmentada
	cvRectangle(frame, cvPoint(minx,miny), cvPoint(maxx,maxy), CV_RGB(255,0,0), 1, 8, 0);
	cvShowImage("result", frame );

	cvWaitKey(0);

  cvReleaseImage( &frame_copy );
  cvDestroyWindow("result");

  return 0;
}