US PATENT SUBCLASS 382 / 212
.~.~ Nonholographic optical mask or transparency

Current as of: June, 1999
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382 /   HD   IMAGE ANALYSIS

181  DF  PATTERN RECOGNITION {8}
209  DF  .~ Template matching (e.g., specific devices that determine the best match) {5}
212.~.~ Nonholographic optical mask or transparency {2}
213  DF  .~.~.~> Using both positive and negative masks or transparencies
214  DF  .~.~.~> With a display

DEFINITION

Classification: 382/212

Nonholos:graphic optical mask or transparency:

(under subclass 209) Subject matter wherein the optically formed image of each pattern* to be identified is compared to a set of optically stored prototypes, holograms not included.