/usr/share/octave/site/m/vlfeat/toolbox/geometry/vl_ihat.m is in octave-vlfeat 0.9.17+dfsg0-6build1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 | function om = vl_ihat( H )
% VL_IHAT Inverse vl_hat operator
% OM = VL_IHAT(H) returns a vector OM such that VL_HAT(OM) = H.
% H hast to be 3x3 skew-symmetric.
%
% See also: VL_HAT(), 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).
om = [H(3,2);H(1,3);H(2,1)] ;
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