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US 10,706,311 B2Granted
Increasing dissimilarity of characters disposed on an optically active article
Assignee3M Innovative Properties Company
InventorsJustin M. Johnson, James W. Howard, Thomas J. Dahlin, James B. Snyder, James L. C. Werness, Jr.
Life of this patent
Estimating the term…
Abstract
The inventors of the present application developed novel retroreflective materials, and articles. One example of the present application is a retroreflective article, comprising a substrate and a machine-readable information disposed on the substrate, wherein the machine-readable information corresponds to a predetermined human-readable information.
Claims17
A method comprising:
- receiving, by a computing device and from an image capture device, an image of an optically active article that includes a set of one or more symbols of a symbol set, wherein at least one symbol of the set of one or more symbols represented in the image comprises a set of one or more active encoding regions that are embedded within the symbol;
- performing optical character recognition on a particular image region of the image that includes the at least one symbol to determine, by the computing device and based at least in part on the set of one or more active encoding regions, that the particular image region represents the at least one symbol, wherein an arrangement of the set of one or more active encoding regions within the at least one symbol provides a degree of character dissimilarity between the at least one symbol and another symbol in the symbol set that satisfies a pre-defined threshold;
- and
- performing, by the computing device and based at least in part on determining that the particular image region represents the at least one symbol, one or more operations.
1 more element
A retroreflective article comprising:
- a retroreflective substrate;
- a set of one or more symbols disposed on the retroreflective substrate, wherein an arrangement of a set of one or more active encoding regions at one or more pre-determined locations within the at least one symbol of the set of one or more symbols provides a degree of character dissimilarity between the at least one symbol and another symbol in the set that satisfies a pre-defined threshold based on the arrangement of the set of one or more active encoding regions at the one or more pre-determined locations.
A method of making an optically-active article comprising:
- receiving a user input specifying information;
- generating, based at least in part on the user input, a printing specification that includes a particular symbol with one or more active encoding regions, wherein the printing specification specifies a set of one or more symbols to include within an optically active article, wherein the one or more active encoding regions embedded within the particular symbol provide a degree of dissimilarity between a first spatial appearance of the particular symbol and at least a second spatial appearance of a second symbol that satisfies a pre-defined threshold based on the arrangement of the one or more active encoding regions at one or more pre-determined locations;
- and
- constructing, based at least in part on the printing specification, the optically active article with the particular symbol.
1 more element
Dependencies are inferred from the claim text.