realnoiselet   

    Real-valued Noiselet Transform
 
    Usage: w = realnoiselet(x)
    x must be a REAL VALUED COLUMN VECTOR or MATRIX
    m = size(x,1) must be a POWER OF TWO
 
    Notes:
    1) This implementation uses exactly m*log2(m) additions/subtractions.
    2) This is a real-valued variation of "dragon" noiselets.
    3) This is symmetric and orthogonal. To invert, apply again and
       divide by m.
 
    Written by: Justin Romberg, Georgia Tech
                Peter Stobbe, Caltech
    Email: jrom@ece.gatech.edu, stobbe@acm.caltech.edu
    Created: October 2006
    Last Modified: December 2006

0001 %    Real-valued Noiselet Transform
0002 %
0003 %    Usage: w = realnoiselet(x)
0004 %    x must be a REAL VALUED COLUMN VECTOR or MATRIX
0005 %    m = size(x,1) must be a POWER OF TWO
0006 %
0007 %    Notes:
0008 %    1) This implementation uses exactly m*log2(m) additions/subtractions.
0009 %    2) This is a real-valued variation of "dragon" noiselets.
0010 %    3) This is symmetric and orthogonal. To invert, apply again and
0011 %       divide by m.
0012 %
0013 %    Written by: Justin Romberg, Georgia Tech
0014 %                Peter Stobbe, Caltech
0015 %    Email: jrom@ece.gatech.edu, stobbe@acm.caltech.edu
0016 %    Created: October 2006
0017 %    Last Modified: December 2006