Print Email Facebook Twitter Ultrasonic scanning, imaging and recognition of bottles Title Ultrasonic scanning, imaging and recognition of bottles Author Breeuwer, R. Technisch Physische Dienst TNO - TH Publication year 1989 Abstract A compact machine has been developed to take in returnable bottles. Using ultrasonics, it recognizes up to 150 different bottles. A teaching facility allows store personnel to add new types of bottles to the reference set. The ultrasonic system operates in air and employs a strongly focusing parabolic acoustical mirror in combination with a linear array of three transducers to image the bottle. To reduce artifacts, phase-insensitive detection is incorporated. Automatic calibration helps to achieve the relatively high accuracy required. Dedicated recognition software attempts to match the present bottle to one in the reference set. The ultrasonic system and recognition software are discussed. Subject BottlesUltrasonic devicesComputer aided analysisGrocery storesRecognition softwareReturnable bottlesUltrasonic scanningImaging techniques To reference this document use: http://resolver.tudelft.nl/uuid:63f8e7f4-bad1-4286-bc74-05c47fd86dae TNO identifier 230996 Publisher IEEE, Piscataway, NJ, US ISSN 0090-5607 Source IEEE 1989 Ultrasonics Symposium, 3-6 October 1989, Montreal, Quebec, Canada, 1, 635-638 Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.