/usr/include/vxl/contrib/oxl/osl/ is in libvxl1-dev 1.14.0-14.
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/usr/include/vxl/contrib/oxl/osl/internals/
/usr/include/vxl/contrib/oxl/osl/internals/droid.h
/usr/include/vxl/contrib/oxl/osl/internals/osl_reorder_chain.h
/usr/include/vxl/contrib/oxl/osl/osl_1d_half_kernel.h
/usr/include/vxl/contrib/oxl/osl/osl_1d_half_kernel.txx
/usr/include/vxl/contrib/oxl/osl/osl_OrthogRegress.h
/usr/include/vxl/contrib/oxl/osl/osl_break_edge.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_base.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_gradient.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_nms.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_ox.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_ox_params.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_port.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_rothwell.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_rothwell_params.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_smooth.h
/usr/include/vxl/contrib/oxl/osl/osl_canny_smooth.txx
/usr/include/vxl/contrib/oxl/osl/osl_chamfer.h
/usr/include/vxl/contrib/oxl/osl/osl_convolve.h
/usr/include/vxl/contrib/oxl/osl/osl_easy_canny.h
/usr/include/vxl/contrib/oxl/osl/osl_edge.h
/usr/include/vxl/contrib/oxl/osl/osl_edge_detector.h
/usr/include/vxl/contrib/oxl/osl/osl_edge_detector_params.h
/usr/include/vxl/contrib/oxl/osl/osl_edgel_chain.h
/usr/include/vxl/contrib/oxl/osl/osl_fit_circle.h
/usr/include/vxl/contrib/oxl/osl/osl_fit_lines.h
/usr/include/vxl/contrib/oxl/osl/osl_fit_lines_params.h
/usr/include/vxl/contrib/oxl/osl/osl_hacks.h
/usr/include/vxl/contrib/oxl/osl/osl_harris.h
/usr/include/vxl/contrib/oxl/osl/osl_harris_params.h
/usr/include/vxl/contrib/oxl/osl/osl_kernel.h
/usr/include/vxl/contrib/oxl/osl/osl_load_topology.h
/usr/include/vxl/contrib/oxl/osl/osl_ortho_regress.h
/usr/include/vxl/contrib/oxl/osl/osl_roi_window.h
/usr/include/vxl/contrib/oxl/osl/osl_save_topology.h
/usr/include/vxl/contrib/oxl/osl/osl_topology.h
/usr/include/vxl/contrib/oxl/osl/osl_vertex.h