/usr/share/octave/packages/image-2.6.1/private/ is in octave-image 2.6.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/octave/packages/image-2.6.1/private/analyze75filename.m
/usr/share/octave/packages/image-2.6.1/private/colorspace_conversion_input_check.m
/usr/share/octave/packages/image-2.6.1/private/colorspace_conversion_revert.m
/usr/share/octave/packages/image-2.6.1/private/handle_colorspec.m
/usr/share/octave/packages/image-2.6.1/private/im2col_check.m
/usr/share/octave/packages/image-2.6.1/private/imarithmetics.m
/usr/share/octave/packages/image-2.6.1/private/interp_method.m
/usr/share/octave/packages/image-2.6.1/private/is_float_image.m
/usr/share/octave/packages/image-2.6.1/private/iscolormap.m
/usr/share/octave/packages/image-2.6.1/private/isimage.m
/usr/share/octave/packages/image-2.6.1/private/ispart.m
/usr/share/octave/packages/image-2.6.1/private/istform.m
/usr/share/octave/packages/image-2.6.1/private/lab2cls.m
/usr/share/octave/packages/image-2.6.1/private/pad_for_sliding_filter.m
/usr/share/octave/packages/image-2.6.1/private/prepare_strel.m
/usr/share/octave/packages/image-2.6.1/private/ycbcrfunc.m