Autofocus for a multiscale gigapixel camera.


Journal Article

In recent studies, the advanced wide field of view architectures for image reconstruction and exploitation (AWARE) multiscale camera, which is composed of a monocentric objective lens and an array of microcameras, was developed for the realization of snapshot wide field of view and high resolution imaging. This paper describes accelerated autofocus (AF) methods for the AWARE system based on a hierarchical spatial algorithm and an iterative temporal algorithm. In the algorithms, sensor positions of each microcamera are hierarchically scanned with contrast detection to effectively search for a focusing distance. The positions are then updated iteratively for dynamic scenes using temporal information. The algorithms are theoretically analyzed and experimentally demonstrated. The developed AF methods can be used for the realization of the temporal gigapixel imaging by the AWARE system.

Full Text

Duke Authors

Cited Authors

  • Nakamura, T; Kittle, DS; Youn, SH; Feller, SD; Tanida, J; Brady, DJ

Published Date

  • November 2013

Published In

Volume / Issue

  • 52 / 33

Start / End Page

  • 8146 - 8153

PubMed ID

  • 24513771

Pubmed Central ID

  • 24513771

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.52.008146


  • eng