Portable vision screenings system

Yeun Lok Lin, Ngai Fong Law, Chi Wai Do

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Visual acuity (VA) is a mandatory test in vision screenings. It is used to examine if there are any potential eye-sight problems in patients. Currently, the VA tests are performed in an analog format, such as using a paper chart and a light box. These materials are easily degraded by dirt and moist. Moreover, the analog format is difficult to be carried out in overseas screenings as paper charts and luminous devices should be carried. Sometimes, accurate measurements cannot be obtained in remote areas in overseas screenings due to various constraints. To solve these difficulties, an electronic version of the VA chart is designed so that a portable system can be developed to perform VA examination. The process of examination can be automatically performed by using the web socket as a communication media and determining answers through correlation-based template matching. Results show that VA symbols can be remotely re-sized and rendered accurately in mobile devices such as tablets and smart phones. Besides, we also evaluated the performance on executing correlation-based template matching algorithms over JavaScript. It was found that JavaScript was sufficient to support the required computations in image recognition algorithms irrespective of its limitations such as single-threaded and interpretation nature.

Original languageEnglish
Title of host publicationProceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages754-759
Number of pages6
ISBN (Electronic)9781538615423
DOIs
Publication statusPublished - 5 Feb 2018
Event9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017 - Kuala Lumpur, Malaysia
Duration: 12 Dec 201715 Dec 2017

Publication series

NameProceedings - 9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
Volume2018-February

Conference

Conference9th Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, APSIPA ASC 2017
CountryMalaysia
CityKuala Lumpur
Period12/12/1715/12/17

Keywords

  • Sockets
  • Testing
  • Performance evaluation
  • Indexes
  • Smart phones
  • Hyperspectral imaging
  • Visualization

ASJC Scopus subject areas

  • Artificial Intelligence
  • Human-Computer Interaction
  • Information Systems
  • Signal Processing

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