gauss2ellipse

 Creates an ellipse representing the 2D Gaussian distribution.

 Creates an ellipse representing the 2D Gaussian distribution with mean mu
 and covariance matrix C.  Returns 5 parameters that specify the ellipse.

 USAGE
  [cRow, cCol, ra, rb, phi] = gauss2ellipse( mu, C, [rad] )

 INPUTS
  mu      - 1x2 vector representing the center of the ellipse
  C       - 2x2 cov matrix
  rad     - [2] Number of std to create the ellipse to

 OUTPUTS
  cRow    - the row location of the center of the ellipse
  cCol    - the column location of the center of the ellipse
  ra      - semi-major axis length (in pixels) of the ellipse
  rb      - semi-minor axis length (in pixels) of the ellipse
  phi     - rotation angle (radians) of semimajor axis from x-axis

 EXAMPLE
  [cRow, cCol, ra, rb, phi] = gauss2ellipse( [5 5], [1 0; .5 2] )
  plotEllipse( cRow, cCol, ra, rb, phi );

 See also PLOTELLIPSE, PLOTGAUSSELLIPSES, MASKELLIPSE

 Piotr's Computer Vision Matlab Toolbox      Version 2.0
 Copyright 2014 Piotr Dollar.  [pdollar-at-gmail.com]
 Licensed under the Simplified BSD License [see external/bsd.txt]