{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T05:39:24Z","timestamp":1777786764305,"version":"3.51.4"},"reference-count":107,"publisher":"Association for Computing Machinery (ACM)","issue":"1","license":[{"start":{"date-parts":[[2020,3,18]],"date-time":"2020-03-18T00:00:00Z","timestamp":1584489600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.acm.org\/publications\/policies\/copyright_policy#Background"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":["Proc. ACM Interact. Mob. Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2020,3,18]]},"abstract":"<jats:p>Home assistant devices such as Amazon Echo and Google Home have become tremendously popular in the last couple of years. However, due to their voice-controlled functionality, these devices are not accessible to Deaf and Hard-of-Hearing (DHH) people. Given that over half a million people in the United States communicate using American Sign Language (ASL), there is a need of a home assistant system that can recognize ASL. The objective of this work is to design a home assistant system for DHH users (referred to as mmASL) that can perform ASL recognition using 60 GHz millimeter-wave wireless signals. mmASL has two important components. First, it can perform reliable wake-word detection using spatial spectrograms. Second, using a scalable and extensible multi-task deep learning model, mmASL can learn the phonological properties of ASL signs and use them to accurately recognize the ASL signs. We implement mmASL on 60 GHz software radio platform with phased array, and evaluate it using a large-scale data collection from 15 signers, 50 ASL signs and over 12K sign instances. We show that mmASL is tolerant to the presence of other interfering users and their activities, change of environment and different user positions. We compare mmASL with a well-studied Kinect and RGB camera based ASL recognition systems, and find that it can achieve a comparable performance (87% average accuracy of sign recognition), validating the feasibility of using 60 GHz mmWave system for ASL sign recognition.<\/jats:p>","DOI":"10.1145\/3381010","type":"journal-article","created":{"date-parts":[[2020,3,18]],"date-time":"2020-03-18T18:54:31Z","timestamp":1584557671000},"page":"1-30","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":83,"title":["mmASL"],"prefix":"10.1145","volume":"4","author":[{"given":"Panneer Selvam","family":"Santhalingam","sequence":"first","affiliation":[{"name":"Computer Science Department, George Mason University, Fairfax, Virginia"}]},{"given":"Al Amin","family":"Hosain","sequence":"additional","affiliation":[{"name":"Computer Science Department, George Mason University, Fairfax, Virginia"}]},{"given":"Ding","family":"Zhang","sequence":"additional","affiliation":[{"name":"Computer Science Department, George Mason University, Fairfax, Virginia"}]},{"given":"Parth","family":"Pathak","sequence":"additional","affiliation":[{"name":"Computer Science Department, George Mason University, Fairfax, Virginia"}]},{"given":"Huzefa","family":"Rangwala","sequence":"additional","affiliation":[{"name":"Computer Science Department, George Mason University, Fairfax, Virginia"}]},{"given":"Raja","family":"Kushalnagar","sequence":"additional","affiliation":[{"name":"Department of Science, Technology and Mathematics, Gallaudet University, Washington, DC"}]}],"member":"320","published-online":{"date-parts":[[2020,3,18]]},"reference":[{"key":"e_1_2_2_1_1","volume-title":"National Instruments mmWave Transceiver System. 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