Yujian Xu, Jan P. Allebach, "Printed Image Watermarking with Synchronization Using Direct Binary Search" in Proc. IS&T Int’l. Symp. on Electronic Imaging: Media Watermarking, Security, and Forensics, 2019, pp 526-1 - 526-7, https://doi.org/10.2352/ISSN.2470-1173.2019.5.MWSF-526