/usr/share/octave/site/m/vlfeat/toolbox/imop/ is in octave-vlfeat 0.9.20+dfsg0-1.
This file is owned by root:root, with mode 0o755.
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/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_dwaffine.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imarray.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imarraysc.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imdisttf.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imdown.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imgrad.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imintegral.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_impattern.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imreadbw.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imreadgray.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imsc.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imsmooth.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imup.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imwbackward.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_imwhiten.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_rgb2xyz.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_tps.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_tpsu.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_waffine.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_witps.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_wtps.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_xyz2lab.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_xyz2luv.m
/usr/share/octave/site/m/vlfeat/toolbox/imop/vl_xyz2rgb.m