Optimization of phase mask based iris imaging system through the optical characteristics

Yu Qing He*, Jia Qi Li, Jing Pan, Ying Jiao Li

*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

Iris recognition is the most reliable method in personal identification. However, the current fixed-focus iris imaging system has small depth of field(DOF), which limits the wide application of the iris recognition system. This paper presents the design method and optimization of a phase mask based iris imaging system. Through wavefront coding, it can extend the DOF and enhance the convenience of iris image acquisition. Through analyzing the modulation transfer function and optical parameters of the cubic phase mask, we can get the wavefront coding iris imaging system's optimal parameter and it's structure. Experimental results show that the cubic phase mask based iris imaging system has larger DOF and better imaging performance.

Original languageEnglish
Title of host publicationSensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XII
DOIs
Publication statusPublished - 2013
EventSensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XII - Baltimore, MD, United States
Duration: 29 Apr 20131 May 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8711
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSensors, and Command, Control, Communications, and Intelligence (C3I) Technologies for Homeland Security and Homeland Defense XII
Country/TerritoryUnited States
CityBaltimore, MD
Period29/04/131/05/13

Keywords

  • Depth of field extension
  • Iris recognition
  • Modulation transfer function
  • Phase mask
  • Wavefront coding

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