Title page for etd-0831111-133335


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URN etd-0831111-133335
Author Ting-wei Chen
Author's Email Address No Public.
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Department Electro-Optical Engineering
Year 2010
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Speckle-reduction using the bidimensional empirical mode decomposition for fringe analysis
Date of Defense 2011-07-11
Page Count 73
Keyword
  • Fringe analysis
  • Optical metrology
  • Speckle-reduction
  • Bidimensional empirical mode decomposition
  • Interference image
  • Abstract Phase-extraction from fringe patterns is an inevitable procedure in the field of optical metrology and interferometry. However, speckle noise will introduce and influence the precision of wrapped phase map when a coherent light is used.
    In this thesis, we use the bidimensional empirical mode decomposition (BEMD) to perform the speckle-reduction. Moreover, different interpolation method in BEMD will be used to compare their performance in speckle-reduction. Finally, the database will be developed to make the BEMD a robotic tool to reduce noises. And the database also points out that the performance of BEMD is highly related to the fringe period, the fringe visibility, and the SNR of speckle noise.
    Advisory Committee
  • Ann-Kuo Chu - chair
  • Yi-Jen Chiu - co-chair
  • Chao-Kuei Lee - advisor
  • Wei-Hung Su - advisor
  • Files
  • etd-0831111-133335.pdf
  • Indicate in-campus at 99 year and off-campus access at 99 year.
    Date of Submission 2011-08-31

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