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Sanjay E. Sarma. Sun, Yongbin, Ph. D. Massachusetts Institute of Technology Massachusetts Institute of Technology. Department of Mechanical Engineering. Massachusetts Institute of Technology. Department of Mechanical Engineering 2016-09-13T19:20:28Z 2016-09-13T19:20:28Z 2016 2016 http://hdl.handle.net/1721.1/104277 958161481 Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016. Cataloged from PDF version of thesis. Includes bibliographical references (pages 63-67). In this thesis, I aim to build an accurate fine-grained retail product recognition system for improving customer in-store shopping experience. To achieve high accuracy, I developed a two-phase visual recognition scheme to identify the viewed retail product by verifying different types of visual features. The proposed scheme is robust enough to distinguish visually similar products in the tests. However, the computation cost of this scheme increases as the database scale becomes larger since it needs to verify all the products in the database. To improve the computation efficiency, my system integrates RFID as a second data source. By attaching an RFID tag to each product, the RFID reader is able to capture the identity information of surrounding products. The detection results can help reduce the verification scope from the whole database to the detected products only. Hence computation cost is saved. In the experiments, I first tested the recognition accuracy of my visual recognition scheme on a database containing visually similar products for different viewing angles, and my scheme achieved over 97.92% recognition accuracy for horizontal viewpoint variations of less than 30 degree. I then experimentally measured the computation cost of both the original system and the RFID-enhanced system. The computation cost is the processing time to recognize a target product. The RFID-enhanced system speeds up system performance dramatically when the scale of detected surrounding products is small. by Yongbin Sun. S.M. 67 pages eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Mechanical Engineering. An RFID-based visual recognition system for the retail industry Radio-frequency identification-based visual recognition system for the retail industry Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="535293af-2421-46e3-bff7-377a880198da"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>An RFID-based visual recognition system for the retail industry</Title> <Subtitle>Radio-frequency identification-based visual recognition system for the retail industry</Subtitle> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2016</PublicationDate> <Authors> <Author> <DisplayName>Sun, Yongbin, Ph. D. Massachusetts Institute of Technology</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Mechanical Engineering.</Keyword> <Abstract>In this thesis, I aim to build an accurate fine-grained retail product recognition system for improving customer in-store shopping experience. To achieve high accuracy, I developed a two-phase visual recognition scheme to identify the viewed retail product by verifying different types of visual features. The proposed scheme is robust enough to distinguish visually similar products in the tests. However, the computation cost of this scheme increases as the database scale becomes larger since it needs to verify all the products in the database. To improve the computation efficiency, my system integrates RFID as a second data source. By attaching an RFID tag to each product, the RFID reader is able to capture the identity information of surrounding products. The detection results can help reduce the verification scope from the whole database to the detected products only. Hence computation cost is saved. In the experiments, I first tested the recognition accuracy of my visual recognition scheme on a database containing visually similar products for different viewing angles, and my scheme achieved over 97.92% recognition accuracy for horizontal viewpoint variations of less than 30 degree. I then experimentally measured the computation cost of both the original system and the RFID-enhanced system. The computation cost is the processing time to recognize a target product. The RFID-enhanced system speeds up system performance dramatically when the scale of detected surrounding products is small.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>