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Acta Optica Sinica, Volume. 39, Issue 3, 0315006(2019)

Stellar Image Denoising Method for Active Pixel Sensor Based on Dynamic Sequential Noise Template

Junfeng Xie1, Hong Zhu1、*, Pin Li2, Fan Mo1, and Xiang Li1,2
Author Affiliations
  • 1 Satellite Surveying and Mapping Application Center, National Administration of Surveying, Mapping and Geoinformation, Beijing 100048, China
  • 2 School of Surveying and Geographical Science, Liaoning Technical University, Fuxin, Liaoning 123000, China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    Figures & Tables(11)
    Schematic of multi-frame continuous stellar image. (a) First frame; (b) second frame; (c) kth frame

    Fig. 1. Schematic of multi-frame continuous stellar image. (a) First frame; (b) second frame; (c) kth frame

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    Flow chart of stellar image sequence denoising

    Fig. 2. Flow chart of stellar image sequence denoising

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    Schematic of acquisition of static background noise

    Fig. 3. Schematic of acquisition of static background noise

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    Original stellar images. (a) First frame; (b) 55th frame; (c) 124th frame

    Fig. 4. Original stellar images. (a) First frame; (b) 55th frame; (c) 124th frame

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    Background noise. (a) Template; (b) three-dimensional view

    Fig. 5. Background noise. (a) Template; (b) three-dimensional view

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    Comparison of stellar images before and after denoising. (a) Before denoising; (b) after denoising

    Fig. 6. Comparison of stellar images before and after denoising. (a) Before denoising; (b) after denoising

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    Partial enlargement images. (a) Before denoising; (b) after denoising

    Fig. 7. Partial enlargement images. (a) Before denoising; (b) after denoising

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    Comparison of results of many denoising methods. (a) Gaussian filtering; (b) global threshold method; (c) static background template; (d) proposed method

    Fig. 8. Comparison of results of many denoising methods. (a) Gaussian filtering; (b) global threshold method; (c) static background template; (d) proposed method

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    Test results of first frame stellar image. (a) Extracted centroid coordinates; (b) star angular distance error

    Fig. 9. Test results of first frame stellar image. (a) Extracted centroid coordinates; (b) star angular distance error

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    Star angular distance error. (a) Gaussian filtering; (b) global threshold segmentation; (c) static noise template; (d) dynamic background noise template

    Fig. 10. Star angular distance error. (a) Gaussian filtering; (b) global threshold segmentation; (c) static noise template; (d) dynamic background noise template

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    • Table 1. Parameters of ZY-3 01/02 star stacker component 1 (APS)

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      Table 1. Parameters of ZY-3 01/02 star stacker component 1 (APS)

      IndexParameter
      Focal length /mm43.3
      Projection central coordinate(512,512)
      APS array size1024×1024
      Field angle /[(°)×(°)]20×20
      Lens hood /(°)38
      Pixel size /(μm×μm)15×15
      Exposure time /ms125,200,250,500
      Output frequency /Hz2,1.66
      Pointing accuracy5″(3σ)
      Update frequency /Hz4
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    Junfeng Xie, Hong Zhu, Pin Li, Fan Mo, Xiang Li. Stellar Image Denoising Method for Active Pixel Sensor Based on Dynamic Sequential Noise Template[J]. Acta Optica Sinica, 2019, 39(3): 0315006

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    Paper Information

    Category: Machine Vision

    Received: Sep. 11, 2018

    Accepted: Nov. 8, 2018

    Published Online: May. 10, 2019

    The Author Email:

    DOI:10.3788/AOS201939.0315006

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology