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Real-Time super-block-based star detection and centroid calculation

  • Zhen Wang
  • , Jie Jiang*
  • , Guangjun Zhang
  • *Corresponding author for this work
  • Beihang University
  • Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)

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

Abstract

Various high-resolution or high-frame-rate image sensors are used in star trackers to improve attitude accuracy and attitude update rate. However, the use of these high-performance image sensors has generated a new problem. The speed requirement of star detection and centroid calculation (SDCC) exceeds the capability of existing SDCC methods. Therefore, this paper presents a new real-Time super-block-based SDCC method to resolve such a problem. In contrast to the traditional SDCC methods, the proposed method process the star images four by four and considering the continuous eight-connected pixels in the two lines as a super-block. The proposed method exhibits a speed that is four times faster than the previous SDCC methods. Thus, the performance limitation caused by the inadequacies of SDCC speed is solved. Experimental results indicate that the proposed method is correct and effective.

Original languageEnglish
Title of host publicationOptical Sensing and Imaging Technologies and Applications
EditorsDong Liu, Jin Lu, HaiMei Gong, Mircea Guina
PublisherSPIE
ISBN (Electronic)9781510623347
DOIs
StatePublished - 2018
EventInternational Symposium on Optoelectronic Technology and Application 2018: Optical Sensing and Imaging Technologies and Applications 2018, OTA 2018 - Beijing, China
Duration: 22 May 201824 May 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10846
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Symposium on Optoelectronic Technology and Application 2018: Optical Sensing and Imaging Technologies and Applications 2018, OTA 2018
Country/TerritoryChina
CityBeijing
Period22/05/1824/05/18

Keywords

  • Centroid location
  • Image sensors application
  • Star detection
  • Star image
  • Star tracker

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