Adaptive-Bandwidth Shape From Focus/Defocus Technique

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  • Yamaguchi Tatsuhiro
    Dept. of Information Science, Graduate School of Engineering, University of Fukui
  • Nakano Yutaka
    Dept. of Information Science, Graduate School of Engineering, University of Fukui
  • Yoshida Toshiyuki
    Dept. of Information Science, Graduate School of Engineering, University of Fukui

Bibliographic Information

Other Title
  • 帯域適応型Shape From Focus/Defocus法について(インタラクティブシステム・画像入力デバイス・方式、及び一般)
  • 帯域適応型Shape From Focus/Defocus法について
  • タイイキ テキオウガタ Shape From Focus Defocusホウ ニ ツイテ

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Abstract

"Shape from focus or defocus" has been known as one of the 3-D shape reconstruction techniques, which estimates depth information from a set of multi-focus images of a target object. However, the technique suffers from the disadvantage that the luminance variation between adjacent blocks severely affects a focusing measure used for the depth estimation, causing accuracy degradation in the target model. To alleviate the problem, this paper proposes a new technique which adaptively selects three kinds of high-pass filters for the calculation of the focusing measure based on the evaluation of the single/multi-peak behavior of the focusing measure. The proposed technique has been applied to artificial models and actual images to illustrate the usefulness of the proposed technique.

Journal

  • ITE Technical Report

    ITE Technical Report 34.22 (0), 1-4, 2010

    The Institute of Image Information and Television Engineers

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