A reflective object positioning and recognition system based on doe optical chip

Abstract

The invention discloses a reflective object positioning and recognition system based on a DOE optical chip. The object positioning and recognition system at least includes: an object to be recognized, a transparent floor, a laser, a mirror, a DOE chip, an image acquisition unit, a projection receiving surface and The data processing unit completes the identification of the identity information of the object to be identified based on the received projection content information, and the data processing unit completes the identification and judgment of the monitoring point where the object to be identified is located based on the received projection position information. The structural design of the object location recognition system of the present invention enables the system to realize the passive recognition function of the object to be recognized based on the reflective DOE chip. At the same time, multiple monitoring points in this system constitute a recognition unit; each recognition unit can share a digital camera; all recognition units can share a pattern recognition software, which reduces the system cost.

Description

technical field [0001] The invention belongs to the technical field of object identification and positioning, and in particular relates to a reflective object positioning recognition system based on a DOE optical chip. Background technique [0002] At present, the existing identification technologies mainly include: 1. Radio channel identification technology. Send your own unique identification code information to the recipient through radio communication. At present, WIFI, Bluetooth, zigbee and other technologies can be used for identity information transmission. When using this method, the identified person needs to provide their own equipment and allocate additional energy to send identity information. 2. Appearance-based identification technology identifies the identity of each object through the image information of special logos, shapes and textures on the appearance. The identified person does not need to be equipped with additional equipment or consume additional ...

AI Technical Summary

Problems solved by technology

If the radio communication method is used, the occupancy of the channel needs to be coordinated, which may easily cause communication congestion and low speed; or it may not be able to carry a large number of individuals entering the network; using the appearance of objects for identification, the identification algorithm is difficult to design, and the appearance of each device needs to be changed. and is easily affected by on-site lighting conditions

[0005] (2) The identification area is large or very small; for a large identification area, multiple identification devices need to be deployed to cover the entire area, and the unit price and quantity of identification devices need to be strictly controlled, otherwise the entire identification system will be expensive and lose application value

For small identification areas, higher positioning accuracy is required to distinguish small position gaps between objects, and it is difficult to achieve satisfactory positioning accuracy using radio positioning

[0006] (3) It is difficult to provide energy on the identified object; for some passive objects, such as chess pieces, active signal transmitting equipment cannot be installed, and can only be identified and positioned in a passive manner

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