Notes on using the VideoTool software

There are three windows:
  one for the live video
  one for the undistorted live image OR file-loaded image
  one for drawing on and display

It's possible to draw on the others, as well, if you'd like.

ThreadFunc is the server thread
  -- right now this server listens on port 5006
  -- the only message supported is "q" for quitting.

Keyboard key:

  s - starts/stops the live video
  f - writes to a file (in ./BMPs and ./BMPsUnd)
  g - gets an image from a file
    - (spacebar) rotates through the images in ./VideoBMPs
  r - detect red (toggle)
  - decrements the "blueValue" variable
  = increments the "blueValue" variable

Mouse: 

  click on the Undistorted image to get x,y  r,g,b  h,s,v data

Global variables are OK: useful for sharing information
among different parts of the program -- particularly because
all of the image processing should be in the main thread!

Functions you'll need to write for Hw#4:

  // converts RGB to HSV
  RGBtoHSV( double r, double g, double b,       
            double* h, double* s, double* v); 

  // finds and displays information on the red molding
  processRed( IplImage* frame, IplImage* f_p );