Image processing methods for noise reduction in the TJ-II Thomson Scattering diagnostic

S. Dormido-Canto, GONZALO ALBERTO FARIAS CASTRO, J. Vega, I. Pastor

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The Thomsom Scattering diagnostic of the TJ-II stellarator provides temperature and density profiles. The CCD camera acquires images corrupted with noise that, in some cases, can produce unreliable profiles. The main source of noise is the so-called stray-light. In this paper we describe an approach that allows mitigation of the effects that stray-light has on the images: extraction regions with connected-components. In addition, the robustness and effectiveness of the noise reduction technique is validated in two ways: (1) supervised classification and (2) comparison of electron temperature profiles.

Original languageEnglish
Pages (from-to)2170-2173
Number of pages4
JournalFusion Engineering and Design
Volume87
Issue number12
DOIs
StatePublished - 1 Dec 2012

Keywords

  • Image processing
  • Segmentation
  • Thomson Scattering

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