Accuracy evaluations of axial localisation algorithms in confocal microscopy

Rongjun Shao, Weiqian Zhao, Lirong Qiu, Yun Wang, Ruirui Zhang

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

2 Citations (Scopus)

Abstract

The localisation accuracy of axial peaks is an important factor for height determination in a confocal microscope. Several algorithms have been proposed for height extraction in surface topography measurements. However, some algorithms ignore the influence of error and discrete sampling on the accuracy. This paper analyzes the localisation accuracy of some common algorithms under different aberrations and random errors, and discusses the effect of axial scanning interval on the accuracy of each algorithm. Finally, we get the application scope of each algorithm. Our results offer a reference for selecting algorithms for confocal metrology.

Original languageEnglish
Title of host publicationOptical Metrology and Inspection for Industrial Applications V
EditorsToru Yoshizawa, Song Zhang, Sen Han, Sen Han
PublisherSPIE
ISBN (Electronic)9781510622364
DOIs
Publication statusPublished - 2018
EventOptical Metrology and Inspection for Industrial Applications V 2018 - Beijing, China
Duration: 11 Oct 201813 Oct 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10819
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Metrology and Inspection for Industrial Applications V 2018
Country/TerritoryChina
CityBeijing
Period11/10/1813/10/18

Keywords

  • Axial peak extraction
  • Confocal microscopy
  • Measurement uncertainty
  • Surface measurement

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