Novel design of hand motion recognition based visual acuity measurements through wireless communications

Yu Chieh Tien, Chun Jie Chiu, Po Hsuan Tseng, Kai-Ten Feng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Visual acuity (VA) measurement is for a subject to test his/her acuteness of vision. Several kinds of automatic VA test are gradually developed and used in recent years. Without experimenter, the traditional way for a subject to speak out or wave a hand in response to the direction of optotype is then replaced mostly by the contact based response such as pushing buttons or keyboards on a device nowadays. However, the contact based response is not intuitive as speaking or waving hands, and it may distract subjects from concentrating on the test. To overcome these problems, we propose a hand motion recognition based visual acuity (HMRVA) measurement which keeps the advantage of automatic VA measurement, and also allows subject to respond in an intuitive contactless way. A velocity based hand motion recognition (V-HMR) algorithm is used to classify hand motion data collected by a sensing device into one of the four directions of optotypes. Based on the V-HMR scheme, a maximum likelihood based visual acuity (ML-VA) estimation algorithm is developed for VA estimation and is implemented on a tablet. According to the experimental results, we can conclude that the proposed HMRVA system achieve our goals to provide accurate and efficient automatic VA tests.

Original languageEnglish
Title of host publication2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, PIMRC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2114-2118
Number of pages5
ISBN (Electronic)9781479949120
DOIs
StatePublished - 25 Jun 2014
Event2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014 - Washington, United States
Duration: 2 Sep 20145 Sep 2014

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume2014-June

Conference

Conference2014 25th IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communication, IEEE PIMRC 2014
CountryUnited States
CityWashington
Period2/09/145/09/14

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