Motivated by the successful printing of a computer-generated hologram
using the computer-to-film (CtF) graphic process, we present a further
refined technique with increased resolution, applicable in security.
The CtF process offers low cost and fast production while persevering
high resolution, and it can make every hologram unique. In this paper,
we present the improvement of the printing method, with several
software modifications and the implementation of security features at
different levels of production.
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