/usr/include/vxl/contrib/gel/mrc/ is in libvxl1-dev 1.14.0-14.
This file is owned by root:root, with mode 0o755.
..
/usr/include/vxl/contrib/gel/mrc/vpgl/
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_adjust_rational_trans_onept.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_backproject.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_bundle_adjust.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_camera_compute.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_camera_homographies.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_construct_cameras.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_fm_compute_2_point.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_fm_compute_7_point.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_fm_compute_8_point.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_fm_compute_affine_ransac.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_fm_compute_ransac.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_fm_compute_reg_ransac.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_interpolate.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_invmap_cost_function.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_lens_warp_mapper.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_list.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_list.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_nitf_camera_coverage.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_optimize_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_ortho_procrustes.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_project.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_rational_geo_adjust.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_ray.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_ray_intersect.h
/usr/include/vxl/contrib/gel/mrc/vpgl/algo/vpgl_vsol_lens_warp.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_datum_conversion.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_dll.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_earth_constants.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_lvcs.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_lvcs_sptr.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_sun_pos.h
/usr/include/vxl/contrib/gel/mrc/vpgl/bgeo/bgeo_utm.h
/usr/include/vxl/contrib/gel/mrc/vpgl/file_formats/
/usr/include/vxl/contrib/gel/mrc/vpgl/file_formats/vpgl_geo_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/file_formats/vpgl_nitf_rational_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/io/
/usr/include/vxl/contrib/gel/mrc/vpgl/io/vpgl_io_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/io/vpgl_io_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/io/vpgl_io_local_rational_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/io/vpgl_io_proj_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/io/vpgl_io_rational_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_affine_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_affine_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_affine_fundamental_matrix.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_affine_fundamental_matrix.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_calibration_matrix.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_calibration_matrix.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_comp_rational_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_comp_rational_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_essential_matrix.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_essential_matrix.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_fundamental_matrix.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_fundamental_matrix.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_lens_distortion.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_lens_distortion.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_local_rational_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_local_rational_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_perspective_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_perspective_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_poly_radial_distortion.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_poly_radial_distortion.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_proj_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_proj_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_radial_distortion.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_radial_distortion.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_rational_camera.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_rational_camera.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_reg_fundamental_matrix.h
/usr/include/vxl/contrib/gel/mrc/vpgl/vpgl_reg_fundamental_matrix.txx
/usr/include/vxl/contrib/gel/mrc/vpgl/xio/
/usr/include/vxl/contrib/gel/mrc/vpgl/xio/vpgl_xio_calibration_matrix.h
/usr/include/vxl/contrib/gel/mrc/vpgl/xio/vpgl_xio_calibration_matrix.txx