/usr/include/vxl/contrib/gel/vsol/ is in libvxl1-dev 1.17.0.dfsg2-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/vxl/contrib/gel/vsol/vsol_box.h
/usr/include/vxl/contrib/gel/vsol/vsol_box_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_box_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_box_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_box_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_box_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_conic_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_conic_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_curve_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_curve_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_curve_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_curve_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_cylinder.h
/usr/include/vxl/contrib/gel/vsol/vsol_cylinder_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_digital_curve_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_digital_curve_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_digital_curve_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_digital_curve_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_flags_id.h
/usr/include/vxl/contrib/gel/vsol/vsol_flags_id_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_group_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_group_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_group_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_group_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_line_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_line_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_line_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_line_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_orient_box_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_orient_box_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_point_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_point_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_point_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_point_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_poly_set_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_poly_set_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_polygon_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_polygon_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_polygon_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_polygon_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_polyhedron.h
/usr/include/vxl/contrib/gel/vsol/vsol_polyhedron_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_polyline_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_polyline_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_polyline_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_polyline_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_rectangle_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_rectangle_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_rectangle_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_rectangle_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_region_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_region_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_region_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_region_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_spatial_object.h
/usr/include/vxl/contrib/gel/vsol/vsol_spatial_object_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_spatial_object_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_spatial_object_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_spatial_object_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_spatial_object_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_surface_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_surface_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_tetrahedron.h
/usr/include/vxl/contrib/gel/vsol/vsol_tetrahedron_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_triangle_2d.h
/usr/include/vxl/contrib/gel/vsol/vsol_triangle_2d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_triangle_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_triangle_3d_sptr.h
/usr/include/vxl/contrib/gel/vsol/vsol_volume_3d.h
/usr/include/vxl/contrib/gel/vsol/vsol_volume_3d_sptr.h