Abstract

The information loss in the modulating process of the phase-encoding plate is analyzed by means of the H-D curve of silver halide film, which shows that there exist some limiting conditions¹ for certain regions of information processed, and information loss is inevitable. Utilizing the special characteristics of silver halide film, we describe a new technique for enhancing and reserving the wholeness of required information. We also suggest a further application of the multiexposure phase-encoding plate and present relevant experimental results, which seems to be a good way of enriching the output colors.

© 1988 Optical Society of America