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Interact."],"published-print":{"date-parts":[[2022,6,14]]},"abstract":"<jats:p>The computational capabilities of recent mobile devices enable the processing of natural features for Augmented Reality (AR), but the scalability is still limited by the devices' computation power and available resources. In this paper, we propose EdgeXAR, a mobile AR framework that utilizes the advantages of edge computing through task offloading to support flexible camera-based AR interaction. We propose a hybrid tracking system for mobile devices that provides lightweight tracking with 6 Degrees of Freedom and hides the offloading latency from users' perception. A practical, reliable and unreliable communication mechanism is used to achieve fast response and consistency of crucial information. We also propose a multi-object image retrieval pipeline that executes fast and accurate image recognition tasks on the cloud and edge servers. Extensive experiments are carried out to evaluate the performance of EdgeXAR by building mobile AR apps upon it. Regarding the Quality of Experience (QoE), the mobile AR apps powered by EdgeXAR framework run on average at the speed of 30 frames per second with precise tracking of only 1-2 pixel errors and accurate image recognition of at least 97% accuracy. As compared to Vuforia, one of the leading commercial AR frameworks, EdgeXAR transmits 87% less data while providing a stable 30FPS performance and reducing the offloading latency by 50 to 70% depending on the transmission medium. Our work facilitates the large-scale deployment of AR as the next generation of ubiquitous interfaces.<\/jats:p>","DOI":"10.1145\/3532202","type":"journal-article","created":{"date-parts":[[2022,6,17]],"date-time":"2022-06-17T17:36:27Z","timestamp":1655487387000},"page":"1-24","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":10,"title":["EdgeXAR: A 6-DoF Camera Multi-target Interaction Framework for MAR with User-friendly Latency Compensation"],"prefix":"10.1145","volume":"6","author":[{"given":"Wenxiao","family":"Zhang","sequence":"first","affiliation":[{"name":"The Hong Kong University of Science and Technology, Hong Kong SAR, Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sikun","family":"Lin","sequence":"additional","affiliation":[{"name":"University of California, Santa Barbara, Goleta, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Farshid Hassani","family":"Bijarbooneh","sequence":"additional","affiliation":[{"name":"The Hong Kong University of Science and Technology, Hong Kong, Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao-Fei","family":"Cheng","sequence":"additional","affiliation":[{"name":"University of Minnesota, Minneapolis, MN, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tristan","family":"Braud","sequence":"additional","affiliation":[{"name":"The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pengyuan","family":"Zhou","sequence":"additional","affiliation":[{"name":"University of Science and Technology of China, Hefei, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lik-Hang","family":"Lee","sequence":"additional","affiliation":[{"name":"Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pan","family":"Hui","sequence":"additional","affiliation":[{"name":"The Hong Kong University of Science and Technology, Hong Kong, Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"320","published-online":{"date-parts":[[2022,6,17]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"2017. 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