11 September 1989 Computer Generated Lenticular Stereograms
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Abstract
Computer generated true three dimensional hardcopy using lenticular sheets offers advantages over alternative hardcopy methods. Easier to record than holographic stereograms and offering full color, lenticular displays have image quality similar to barrier displays but without problems of brightness. Two different means of computer generation are possible. For both, a sequence of perspective views are calculated then merged into a single composite image or stereogram. Interlacing these views is usually done optically but a computational method is also considered. Efforts have been made at direct writing of holograms but can be achieved much more readily for lenticular stereograms since a much lower spatial frequency will suffice. The resolution needed depends upon the pitch of the cylindrical lenses in the lenticular sheet and the number of perspective views to be interlaced. We consider the use of 300 dpi laser printers and show that while the resolution is sufficient, linewidth and spacing are problematic. We also consider production of full color stereograms and discuss the problems caused by dithering for color palette generation. Higher resolution output devices such as digital film recorders offer much greater potential for panoramic, full color display and direct writing of lenticular stereograms is considered a viable, cost effective technique to generate autostereoscopic 3D display.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shaun Love, David F. McAllister, "Computer Generated Lenticular Stereograms", Proc. SPIE 1083, Three-Dimensional Visualization and Display Technologies, (11 September 1989); doi: 10.1117/12.952877; https://doi.org/10.1117/12.952877
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