円筒鏡を用いた三次元形状計測システム Three-dimensional Measurement System Using a Cylindrical Mirror

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本稿では,物体の詳細な三次元形状を計測する,カメラと円筒鏡を用いた単純な構成の形状計測システムを提案する.内部が鏡面となっている円筒内に計測対象を置き,魚眼レンズを装着したカメラで対象を上から撮影することで,カメラから直接見える像と,円筒鏡の内部で反射した像を一度に観測する.これは,実カメラと仮想カメラを用いて,物体上のある1点を複数の視点から同時に観測していることに等しく,ステレオ視を用いて,1枚の画像から点の奥行きを計算できる.本稿では,仮想物体を撮影したシミュレーション画像と,試作システムによる実測画像を用いて,実物体の三次元形状計測を試み,実験結果より,提案システムで計測可能な範囲や形状についての考察を行った.This paper proposes a three-dimensional measurement system with a simple structured system. The proposed system consists of a camera with a fish-eye lens and a cylinder whose inside is coated by a silver reflective layer. A target object is placed inside the cylinder and an image is captured by the camera from right above. The captured image includes sets of points that are observed from multiple viewpoints: one is observed directly, and the other is observed via the mirror. Therefore, the whole shape of the object can be measured using stereo vision in a single shot. An actual experimental situation was simulated and the three-dimensional shape of the target object was measured using the simulated image. In addition, a prototype system was implemented and the shape of the real objects were measured. The results have demonstrated that the proposed method is effective for measuring the whole three-dimensional shape.

This paper proposes a three-dimensional measurement system with a simple structured system. The proposed system consists of a camera with a fish-eye lens and a cylinder whose inside is coated by a silver reflective layer. A target object is placed inside the cylinder and an image is captured by the camera from right above. The captured image includes sets of points that are observed from multiple viewpoints : one is observed directly, and the other is observed via the mirror. Therefore, the whole shape of the object can be measured using stereo vision in a single shot. An actual experimental situation was simulated and the three-dimensional shape of the target object was measured using the simulated image. In addition, a prototype system was implemented and the shape of the real objects were measured. The results have demonstrated that the proposed method is effective for measuring the whole three-dimensional shape.

収録刊行物

  • 情報処理学会論文誌コンピュータビジョンとイメージメディア(CVIM)

    情報処理学会論文誌コンピュータビジョンとイメージメディア(CVIM) 47(SIG10(CVIM15)), 143-151, 2006-07-15

    一般社団法人情報処理学会

参考文献:  12件中 1-12件 を表示

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各種コード

  • NII論文ID(NAID)
    110006391050
  • NII書誌ID(NCID)
    AA11560603
  • 本文言語コード
    JPN
  • 資料種別
    Article
  • ISSN
    1882-7810
  • NDL 記事登録ID
    8044962
  • NDL 請求記号
    Z74-C192
  • データ提供元
    CJP書誌  CJP引用  NDL  NII-ELS  IPSJ 
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