A method for identifying optical tags

Abstract

The invention provides a method for identifying an optical tag. The identification system includes an optical tag for information encoding and a mobile terminal for information decoding; the optical tag includes a signal unit and a positioning mark; the signal unit includes several static images unit, the positioning sign includes several dynamic flashing light-emitting units and a plurality of static graphic signs; the image attribute code of the static image unit transmits the information content; the mobile terminal includes an image acquisition device and an image processing module, and the image acquisition device is used to collect light The coded image of the tag, the image processing module is used to decode the coded image; the optical tag transmits information through the static image unit, so that it can meet its orientation requirements, and the optical tag is initially positioned through the dynamic flashing positioning identifier. Precise positioning of optical tags through static graphic signs can meet the requirements of identifying multiple optical tags at the same time, and greatly improve the recognition distance.

Description

technical field [0001] The invention relates to optical communication technology, in particular to an identification method of an optical label. Background technique [0002] At present, in the information interaction based on mobile terminals, in order to identify and connect various information platform targets, two-dimensional code technology or wireless identification is usually used to establish information links between demanders and suppliers, but the two-dimensional code The method has a short recognition distance, which is specifically manifested in a low ratio of recognition distance to codeword graphic size; although the radio signal recognition distance is long, its directivity is poor, and there may be multiple usable targets in the target area, which cannot be oriented; The long-distance directional information acquisition requirements cannot meet the usage requirements in terms of consumption shopping, information acquisition, and information transmission. C...

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