/usr/share/octave/site/m/vlfeat/toolbox/geometry/vl_hat.m is in octave-vlfeat 0.9.17+dfsg0-6+b1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | function H = vl_hat(om)
% VL_HAT Hat operator
% H = VL_HAT(OM) returns the skew symmetric matrix by taking the "hat"
% of the 3D vector OM.
%
% See also: VL_IHAT(), VL_HELP().
% Copyright (C) 2007-12 Andrea Vedaldi and Brian Fulkerson.
% All rights reserved.
%
% This file is part of the VLFeat library and is made available under
% the terms of the BSD license (see the COPYING file).
H = [0 -om(3) om(2) ;
om(3) 0 -om(1) ;
-om(2) om(1) 0 ] ;
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