Concealogram: An image within an image

Joseph Rosen, Bahram Javidi, Haim Goldenfeld, Shlomi Moshkovits

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Several methods of concealing an image in a different hardcopy image are presented. The hidden image is secured since only a spatial digital, or optical, correlator equipped with an undecipherable key function can reveal the concealed image from the visible picture. The techniques and their robustness to noise and distortions are demonstrated.

Original languageEnglish
Pages (from-to)44-54
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1 Dec 2002
EventAlgorithms and Systems for Optical Information Processing VI - Seattle, WA, United States
Duration: 9 Jul 200210 Jul 2002


  • Binary optics
  • Fourier optics
  • Halfton image reproduction
  • Optical correlators
  • Spatial filtering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'Concealogram: An image within an image'. Together they form a unique fingerprint.

Cite this