Laser pointer detection based on intensity profile analysis for application in teleconsultation

Naireen Imtiaz, Mohd. Marzuki Mustafa, Aini Hussain, Edgar Scavino

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Telemedicine is application of electronic communication to deliver medical care remotely. An important aspect of telemedicine is teleconsultation which involves obtaining the professional opinion of a healthcare provider. One of the ways to improve teleconsultation is to equip the remote specialist via control of a laser pointer, located in the consultation area to provide a means of gesture. As such, accurate detection of laser spot is crucial in such systems as they rely on visual feedback, which enables the specialist in a remote site to control and point the laser in the active location using a standard mouse. The main issue in laser spot detection in a natural environment is the distinguishability of a laser point image from other bright regions and glare due to camera saturation. This problem remains unsolved without extensive computing and use of hardware filters. In this paper a hybrid algorithm is described which is aimed to work with natural indoor environment while limiting computation. This algorithm combines thresholding and blob evaluation methods with a novel image intensity profile comparison method based on linear regression. A comparison of the algorithm has been done with existing approaches. The developed algorithm shows a higher accuracy and faster execution time making it an ideal candidate for real time detection applications.

Original languageEnglish
Pages (from-to)2238-2253
Number of pages16
JournalJournal of Engineering Science and Technology
Volume12
Issue number8
Publication statusPublished - 2017

Fingerprint

Lasers
Telemedicine
Glare
Health care
Linear regression
Cameras
Feedback
Hardware
Communication

Keywords

  • Blob management
  • Image processing
  • Laser pointer detection
  • Profile matching
  • Teleconsultation

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Laser pointer detection based on intensity profile analysis for application in teleconsultation. / Imtiaz, Naireen; Mustafa, Mohd. Marzuki; Hussain, Aini; Scavino, Edgar.

In: Journal of Engineering Science and Technology, Vol. 12, No. 8, 2017, p. 2238-2253.

Research output: Contribution to journalArticle

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