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Akihiro Sugimoto sugimoto @ nii.ac.jp
2019年 1月 16日 (水) 18:46:22 JST


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杉本
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日時:   1/31(木)   17:00-18:00
場所:   国立情報学研究所 1903号室 (19F)
    (東京都千代田区一ツ橋2-1-2)
     https://www.nii.ac.jp/about/access/

講演者: Dr. Yukiko Kenmochi 
  (CNRS Research Associate at Laboratoire d'Informatique
  Gaspard-Monge, Universite Paris-Est, France)

タイトル: Rigid transformations of digital images: discrete approach

概要:
Rigid transformations consisting of rotations and translations are among
the most fundamental transformations in digital image processing. They are
often involved in a variety of applications such as image registration,
motion tracking, and shape recognition. In Euclidean space, such
equidistant transformation is bijective and any shape is unchanged. In
contrast, in the discrete domain, neither bijection nor geometry nor
topology are guaranteed in general, due to the discontinuities induced by
the digitization processes. In other words, applying rigid transformations
mostly degrade digital images. In order to avoid losing such control of
geometry and topology in the discrete space, we aim to develop a purely
discrete framework for rigid transformations on the discrete space, based
on digital geometry and topology concepts. In this talk, we present some
recent solutions for the two-dimensional problems, with discussions of
difficulty of extending those to higher dimensions.

Bio:
Yukiko Kenmochi is a CNRS Research Associate at Laboratoire d'Informatique
Gaspard-Monge, Universite Paris-Est, France, where she has been since 2004
as a member of the research group of A3SI (Algorithmes, Architectures,
Analysis and Synthesis of Images). From 2003 to 2004, she worked at Okayama
University as a Lecturer. During 1998-2003 she was a Research Associate at
Japan Advanced Institute of Science and Technology. She was also a JSPS
fellow from 2000 to 2002 and stayed at Ecole Superieure d'Ingenieurs en
Electrotechnique et Electronique (ESIEE Paris), France. She received the
Ph.D. in computer science from Chiba University in 1998, and the degree of
Habilitation a Diriger des Recherches from Universite Paris-Est in 2018. Her
research interests include discrete geometry for computer imagery.
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