Restoration of defaced serial numbers using lock-in infrared thermography (Part I) Posted on March 29, 2022 By Becky Carter Ikwulono Unobe, Lisa Lau, John Kalivas, Rene Rodriguez, Andrew Sorensen J Spectral Imag; 8:a19; 2019 Access article Crime Scene Investigation and Reconstruction, Firearms and Toolmarks, Photography, Video, and Imaging Technology, Trace Evidence