/usr/include/vxl/contrib/gel/gevd/ is in libvxl1-dev 1.17.0.dfsg2-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/vxl/contrib/gel/gevd/gevd_bufferxy.h
/usr/include/vxl/contrib/gel/gevd/gevd_clean_edgels.h
/usr/include/vxl/contrib/gel/gevd/gevd_contour.h
/usr/include/vxl/contrib/gel/gevd/gevd_detector.h
/usr/include/vxl/contrib/gel/gevd/gevd_detector_params.h
/usr/include/vxl/contrib/gel/gevd/gevd_edgel_regions.h
/usr/include/vxl/contrib/gel/gevd/gevd_float_operators.h
/usr/include/vxl/contrib/gel/gevd/gevd_fold.h
/usr/include/vxl/contrib/gel/gevd/gevd_memory_mixin.h
/usr/include/vxl/contrib/gel/gevd/gevd_noise.h
/usr/include/vxl/contrib/gel/gevd/gevd_param_mixin.h
/usr/include/vxl/contrib/gel/gevd/gevd_pixel.h
/usr/include/vxl/contrib/gel/gevd/gevd_region_edge.h
/usr/include/vxl/contrib/gel/gevd/gevd_region_proc.h
/usr/include/vxl/contrib/gel/gevd/gevd_region_proc_params.h
/usr/include/vxl/contrib/gel/gevd/gevd_status_mixin.h
/usr/include/vxl/contrib/gel/gevd/gevd_step.h
/usr/include/vxl/contrib/gel/gevd/gevd_xpixel.h