directions for running this code:

Note this mean shift operates in the grayscale color space(all 3
channels are used but they are used sequentially)

- open main.cpp and include all the .cpp and .h file in the project.

- go to project then settings and then to debug, under working directory enter your directory where input.txt file is present, under program arguments, enter input.txt

- the file input.txt contains your input path and other commands, complete input command structure is listed at the end of the file(also you can see my input commands as an example).

the program works with uncompressed avi files.  Other file formats have not
been tested. 

- then just build everything and execute the code.
The output files will be in the specified directory.  A simple output file
is generated for the most recent dataset with the xy coordinates and radius
size of the mean shift tracker

The program has mouse io support.  
//if left button clicked then if a number(digit) typed the left mouse
//coordinates are used as new center location
//if after left mouse button the r key is pressed then you can type a new radius
//size in the command prompt
//the right mouse button toggles between pause and unpause
//while paused you may press the - or = key to move backwards or forwards manually