Document hiding with partition multiple holograms based on iterative phase retrieval

Hiroaki Naitou, Uno Katsuhiro

Presentation information

Oral presentation

3 Optics and Photonics » 3.3 Information photonics and image engineering

[23p-D315-1~15] 3.3 Information photonics and image engineering

Wed. Mar 23, 2022 1:00 PM - 5:45 PM D315 (D315)

Kouichi Nitta(Kobe Univ.), Hiroyuki Suzuki(Gunma Univ.), Jun Tanida(Osaka Univ.), Tomoya Nakamura(Osaka Univ.), Ryo Higashida(NHK)

2:00 PM - 2:15 PM

△ [23p-D315-4] Document hiding with partition multiple holograms based on iterative phase retrieval

〇(M2)Hiroaki Naitou¹, Uno Katsuhiro¹ (1.GSE, Ibaraki Univ.)

Keywords:Optical information security, Iterative phase retrieval

We propose a method of hiding text by embedding a hologram of a text image by iterative phase retrieval in a part of the host image area and embedding a hologram of an image that hides the text such as an address blocker stamp in the other area.If the information on how the area is partitioned is unknown, it may be difficult to read the characters.