/usr/share/octave/site/m/vlfeat/toolbox/xtest/vl_test_lbp.m is in octave-vlfeat 0.9.20+dfsg0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | function results = vl_test_lbp(varargin)
% VL_TEST_TWISTER
vl_test_init ;
function test_unfiorm_lbps(s)
% enumerate the 56 uniform lbps
q = 0 ;
for i=0:7
for j=1:7
I = zeros(3) ;
p = mod(s.pixels - i + 8, 8) + 1 ;
I(p <= j) = 1 ;
f = vl_lbp(single(I), 3) ;
q = q + 1 ;
vl_assert_equal(find(f), q) ;
end
end
% constant lbps
I = [1 1 1 ; 1 0 1 ; 1 1 1] ;
f = vl_lbp(single(I), 3) ;
vl_assert_equal(find(f), 57) ;
I = [1 1 1 ; 1 1 1 ; 1 1 1] ;
f = vl_lbp(single(I), 3) ;
vl_assert_equal(find(f), 57) ;
% other lbps
I = [1 0 1 ; 0 0 0 ; 1 0 1] ;
f = vl_lbp(single(I), 3) ;
vl_assert_equal(find(f), 58) ;
function test_fliplr(s)
randn('state',0) ;
I = randn(256,256,1,'single') ;
f = vl_lbp(fliplr(I), 8) ;
f_ = vl_lbpfliplr(vl_lbp(I, 8)) ;
vl_assert_almost_equal(f,f_,1e-3) ;
function s = setup()
s.pixels = [5 6 7 ;
4 NaN 0 ;
3 2 1] ;
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