Fourier transform profilometry applied to lithic tools

  • Gerald John Herrera Doblado National Institute of Physics, University of the Philippines Diliman
  • Nathaniel Hermosa National Institute of Physics, University of the Philippines Diliman
Keywords: 42.30.Kq, Fourier optics; 42.30.Ms, Speckle and moiré patterns Computer vision; 42.30.Tz, robotic vision

Abstract

We apply Fourier transform profilometry (FTP) to get the 3D image of a lithic tool. FTP is a fast fringe projection profilometry (FPP) that requires 1 or 2 images to recontruct a 3D profile of the sample. Based on our 3D images, FTP can resolve the features found on the surfaces of the stone tool. We identified the bulging bulb of percussion and rippling patterns on the ventral side. Scars and dorsal ridges were observed on the dorsal side. Thus, developing FTP for lithic imaging may improve the way how lithic tools' features are classified and measured on archaeological sites.  

Published
2017-06-07
Section
Poster Session A (Experimental Materials Science and Photonics)