Harada, K., Sakai, D. and Kamemaru, S. (2006) A New Teaching Material of Polarization Color. Japanese Journal of Applied Physics Education, 30, 25-28. (In Japanese)
https://annex.jsap.or.jp/edu/dape/english/e_journal.html

has been cited by the following article:

• TITLE: Dual Visual Cryptography Using the Interference Color of Birefringent Material

  AUTHORS: Huangyi Qin, Toshiki Matsusaki, Yusuke Momoi, Kenji Harada

  KEYWORDS: Visual Cryptography, Polarizer, Interference Color, Birefringent Material

  JOURNAL NAME: Journal of Software Engineering and Applications, Vol.10 No.8, July 19, 2017

  ABSTRACT: Visual cryptography is a method of encrypting an image into several encrypted images. Conventional visual cryptography can display only monochrome images. We previously proposed a color visual cryptography method that uses the interference color of high-order retarder films and encrypts one secret image into two encrypted images. In other words, this method can only encrypt one image at a time. In this paper, we propose a new method that encrypts two color images using interference color.