//objectTrackingTutorial.cpp

//Written by Kyle Hounslow 2013

//Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software") //, to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, //and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

//The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS //IN THE SOFTWARE.

include <sstream>

include <string>

include <iostream>

include <opencv\highgui.h>

include <opencv\cv.h>

using namespace cv; //initial min and max HSV filter values. //these will be changed using trackbars int H_MIN = 0; int H_MAX = 95; int S_MIN = 119; int S_MAX = 256; int V_MIN = 160; int V_MAX = 256; //default capture width and height const int FRAME_WIDTH = 640; const int FRAME_HEIGHT = 480; //max number of objects to be detected in frame const int MAX_NUM_OBJECTS = 50; //minimum and maximum object area const int MIN_OBJECT_AREA = 20 * 20; const int MAX_OBJECT_AREA = FRAME_HEIGHTFRAME_WIDTH / 1.5; //names that will appear at the top of each window const string windowName = "Original Image"; const string windowName1 = "HSV Image"; const string windowName2 = "Thresholded Image"; const string windowName3 = "After Morphological Operations"; const string trackbarWindowName = "Trackbars"; void on_trackbar(int, void) {//This function gets called whenever a // trackbar position is changed

} string intToString(int number){

std::stringstream ss;
ss << number;
return ss.str();

} void createTrackbars(){ //create window for trackbars

namedWindow(trackbarWindowName, 0);
//create memory to store trackbar name on window
char TrackbarName[50];
sprintf(TrackbarName, "H_MIN", H_MIN);
sprintf(TrackbarName, "H_MAX", H_MAX);
sprintf(TrackbarName, "S_MIN", S_MIN);
sprintf(TrackbarName, "S_MAX", S_MAX);
sprintf(TrackbarName, "V_MIN", V_MIN);
sprintf(TrackbarName, "V_MAX", V_MAX);
//create trackbars and insert them into window
//3 parameters are: the address of the variable that is changing when the trackbar is moved(eg.H_LOW),
//the max value the trackbar can move (eg. H_HIGH), 
//and the function that is called whenever the trackbar is moved(eg. on_trackbar)
//                                  ---->    ---->     ---->      
createTrackbar("H_MIN", trackbarWindowName, &H_MIN, H_MAX, on_trackbar);
createTrackbar("H_MAX", trackbarWindowName, &H_MAX, H_MAX, on_trackbar);
createTrackbar("S_MIN", trackbarWindowName, &S_MIN, S_MAX, on_trackbar);
createTrackbar("S_MAX", trackbarWindowName, &S_MAX, S_MAX, on_trackbar);
createTrackbar("V_MIN", trackbarWindowName, &V_MIN, V_MAX, on_trackbar);
createTrackbar("V_MAX", trackbarWindowName, &V_MAX, V_MAX, on_trackbar);

} void drawObject(int x, int y, Mat &frame){

//use some of the openCV drawing functions to draw crosshairs
//on your tracked image!

//UPDATE:JUNE 18TH, 2013
//added 'if' and 'else' statements to prevent
//memory errors from writing off the screen (ie. (-25,-25) is not within the window!)

circle(frame, Point ...