Code here are from:
/*******************************************************************************
* Piotr's Image&Video Toolbox      Version 3.24
* Copyright 2013 Piotr Dollar & Ron Appel.  [pdollar-at-caltech.edu]
* Licensed under the Simplified BSD License [see external/bsd.txt]
*******************************************************************************/

get the latest version and more information for use and compilation at:
http://vision.ucsd.edu/~pdollar/toolbox/doc/


Structured Edge (SE) detection toolbox is from:
/*******************************************************************************
* Structured Edge Detection Toolbox      Version 1.00
* Copyright 2013 Piotr Dollar.  [pdollar-at-microsoft.com]
* Licensed under the MSR-LA Full Rights License [see external/license_msr.txt]
*******************************************************************************/
