Hidden images in halftone pictures

Joseph Rosen; Bahram Javidi

doi:10.1364/AO.40.003346

Hidden images in halftone pictures

Joseph Rosen, Bahram Javidi

Department of Electrical & Computer Engineering

Research output: Contribution to journal › Article › peer-review

76 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	3346-3353
Number of pages	8
Journal	Applied Optics
Volume	40
Issue number	20
DOIs	https://doi.org/10.1364/AO.40.003346
State	Published - 10 Jul 2001

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

Access to Document

10.1364/AO.40.003346

Cite this

@article{77dd9f4180c04242996b5d57ed81acc5,

title = "Hidden images in halftone pictures",

abstract = "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{\textquoteright} 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.",

author = "Joseph Rosen and Bahram Javidi",

year = "2001",

month = jul,

day = "10",

doi = "10.1364/AO.40.003346",

language = "English",

volume = "40",

pages = "3346--3353",

journal = "Applied Optics",

issn = "1559-128X",

publisher = "Optica Publishing Group",

number = "20",

}

TY - JOUR

T1 - Hidden images in halftone pictures

AU - Rosen, Joseph

AU - Javidi, Bahram

PY - 2001/7/10

Y1 - 2001/7/10

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0001405296&partnerID=8YFLogxK

U2 - 10.1364/AO.40.003346

DO - 10.1364/AO.40.003346

M3 - Article

AN - SCOPUS:0001405296

SN - 1559-128X

VL - 40

SP - 3346

EP - 3353

JO - Applied Optics

JF - Applied Optics

IS - 20

ER -

Hidden images in halftone pictures

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this