Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)

The Korean Institute of Broadcast and Media Engineers (한국방송∙미디어공학회)
권호 표지

Improvement of reconstructed image from computer generated psuedo holograms using iterative method

  • Sakanaka, Kouta (Department of Electronic and Bioinformatics School of Science Technology Meiji University) ;
  • Tanaka, Kenichi (Department of Electronic and Bioinformatics School of Science Technology Meiji University)
  • Published : 2009.01.12
Download PDF
⟨ Previous Next ⟩

Abstract

Computer-Generated Hologram (CGH) is generally made by Fourier Transform. CGH is made by an optical reconstruction. Computer-Generated Pseudo Hologram (CGPH) is made up Complex Hadamard Transform instead of CGH which is made by the Fourier Transform. CGPH differs from CGH in point of view the possibility of optical reconstruction. There is an advantage that it cannot be optical reconstruction, in other word, physical leakage of the confidential information is impossible. In this paper, a binary image was converted in Complex Hadamard Transform, and CGPH was made. Improvement of the reconstructed image from CGPH is done by error diffusion method and iterative method. The result that the reconstructed image is improved is shown.

Keywords