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Detection of variable stars by time series analysis of the overlapping areas from large-scale astronomical image data sets

Research Project

Project/Area Number 15K12068
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Perceptual information processing
Research InstitutionChukyo University

Principal Investigator

Mekada Yoshito  中京大学, 工学部, 教授 (00282377)

Co-Investigator(Kenkyū-buntansha) 高妻 真次郎  中京大学, 国際教養学部, 准教授 (60584183)
道満 恵介  中京大学, 工学部, 講師 (90645748)
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords画像処理 / 天体画像 / パターン認識 / 画像
Outline of Final Research Achievements

In this research project, as one of astronomical data analysis support technologies, we developed a framework for automatic detection of variable stars by time series analysis from large-scale astronomical image data sets, and also developed fundamental image processing / pattern recognition techniques for this framework. We focused on overlapping areas between celestial images. Therefore, we developed a method to align these images. Variable star detection based on the method of detecting the change in the brightness of the star in the detected overlap region was carried out. For the former, we developed a high-speed overlap region detection method and made large scale experiments possible. In the latter, accuracy was improved by determining the adaptive variable star detecting condition by the brightness of the fixed star. Moreover, to improve the detection precision of the fixed star, we developed a method of approximating the star region by Gaussian distribution.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (3 results)

All 2018 2017 2016

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] ガウシアンフィッティングを用いた恒星検出誤差補正による経時天体画像からの変光星検出2018

    • Author(s)
      岩野 勇弥,道満 恵介,高妻 真次郎,目加田 慶人
    • Organizer
      動的画像処理実利用化ワークショップ(DIA)2018
    • Related Report
      2017 Annual Research Report
  • [Presentation] 天体画像の経時差分解析による変光星検出手法の検討2017

    • Author(s)
      岩野 勇弥,道満 恵介,高妻 真次郎,目加田 慶人
    • Organizer
      2017年電子情報通信学会総合大会
    • Place of Presentation
      名古屋市
    • Year and Date
      2017-03-25
    • Related Report
      2016 Research-status Report
  • [Presentation] Landmark-based detection of the overlapping region between astronomical images2016

    • Author(s)
      Kenichi Matsumoto,Hideki Sato,Keisuke Doman,Shinjirou Kouzuma,Yoshito Mekada
    • Organizer
      2016 Int. Workshop on Advanced Image Technology (IWAIT)
    • Place of Presentation
      Busan, Korea
    • Year and Date
      2016-01-06
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2019-03-29  

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