Extracting information from surface coatings

摘要

A method and system for extracting information from a surface coated with a coating containing quantum dots are disclosed. In embodiments, the method comprises charging the quantum dots in the surface coating, scanning the surface to retrieve information from the quantum dots, and processing the retrieved information to identify data encoded in the quantum dots. In embodiments of the invention, the processing includes filtering the retrieved information to adjust the received information based on defined effects of the coating. In embodiments of the invention, the filtering includes filtering the retrieved information to account for chromatic deviation due to the color of the coated surface. In embodiments of the invention, the quantum dots include a plurality of different types of quantum dots, and the processing the retrieved information includes processing the retrieved information to distinguish between the information retrieved from the different types of quantum dots.

主权项

1. A method of extracting information from a surface coated with a coating containing quantum dots, the method comprising:
charging the quantum dots in the surface coating; scanning the surface to retrieve information from the charged quantum dots; and processing the retrieved information from the charged quantum dots to identify data encoded in the quantum dots; and wherein: in response to the charging, the quantum dots emit light at a plurality of wavelengths; the scanning includes receiving the light emitted by the quantum dots at the plurality of wavelengths; and the processing the retrieved information includes processing the received light emitted by the quantum dots to determine a relative amount of the quantum dots that emit the light at each of the plurality of wavelengths.