Accession Number:

ADA007786

Title:

Holographic Stereogram Conversion Process.

Descriptive Note:

Final technical rept.,

Corporate Author:

NORTHROP RESEARCH AND TECHNOLOGY CENTER HAWTHORNE CALIF

Personal Author(s):

Report Date:

1975-02-01

Pagination or Media Count:

61.0

Abstract:

Practical methods are described for making holographic stereograms from aerialphoto transparencies. The stereograms are viewed in white light without spectacles. They use holography to selectively convey left and right stereoscopic viewpoints to respective eyes of the observer, who subjectively perceives the display as three-dimensional. Left and right pictures are directly overlapped as double-exposure focused-image-plane holograms. Cross-talk between the left and right views is minimized by using a transparent, phase-type, thick-film holographic medium such as dichromated gelatin. Bragg-reflection conditions are satisfied throughout the emulsion, to maximize hologram brightness.

Subject Categories:

  • Cartography and Aerial Photography
  • Holography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE