Color Visual Cryptography with Stacking Order Dependence Using Interference Color

• 作者: Huangyi Qin Kenji Harada Toshiki Matsuzaki
• 来源期刊: 应用科学(英文)
• 学科: 工学
• 关键词: Visual CRYPTOGRAPHY POLARIZER INTERFERENCE COLOR Birefringent Material
• 年，卷（期）: 2017,（7）
• 页码范围: 329-336
• 页数: 8页
• 分类号: TP39

摘要

Visual cryptography is an encryption method that shares a secret image through several encrypted images. General visual cryptography has no stacking order dependence, and only one image can be decoded regardless of stacking order of encrypted images. We previously reported a color visual cryptography using interference color (or polarization color) of retarder films. The interference color changes depending on the stacking order of retarder films. In this paper, we propose and develop a color visual cryptography that displays two images by changing stacking order of retarder films.