Hidden images in halftone pictures

被引：62

作者：

Rosen, J

Javidi, B

机构：

[1] Ben Gurion Univ Negev, Dept Elect & Comp Engn, IL-84105 Beer Sheva, Israel

[2] Univ Connecticut, Dept Elect & Comp Engn, Storrs, CT 06269 USA

来源：

APPLIED OPTICS | 2001年 / 40卷 / 20期

关键词：

D O I：

10.1364/AO.40.003346

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method of concealing an image in a different halftone image is proposed. Continuous-tone levels of the visible images are represented by the area of the halftone dots. However, the hidden image is encoded by the dots' positions inside their cells. Only a spatial correlator with a unique filter function can reveal the hidden image from the halftone picture. The technique and its robustness to noise and distortions are demonstrated. (C) 2001 Optical Society of America.

引用

页码：3346 / 3353

页数：8

共 13 条

[1] DIGITAL HOLOGRAPHY - COMPUTER-GENERATED HOLOGRAMS [J].