レーザ式レンジファインダを用いた多視点表面形状計測に基づく人体位置決め方式

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タイトル別名
  • Registration Method for the Human Body Based on Multi-View Body Surface Measurement Using a Laser Range Finder
  • レーザシキ レンジファインダ オ モチイタ タシテン ヒョウメン ケイジョウ ケイソク ニ モトズク ジンタイ イチギメ ホウシキ

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抄録

In radiotherapy, it is a problem to suppress an unnecessary exposure to the normal tissue to the minimum, and to concentrate the beam only on the target. Positioning the human body is important for an accurate beam irradiation, and in this report we propose the method that positions the human body by measuring the body surface in optics from a multi view points, and using the integrated three-dimensional data. The three-dimensional data was measured with the small 3D sensor installed in the robot arm, and it was applied to the registration algorithm based on the ICP method that presumed the best geometric transformation parameter between two three-dimensional data groups. The error against a true value became 1.5 mm in the head & neck part and 3.0 mm in the body part in the comparison before and after the movement with a mannequin of the upper-body when tested under the various movement conditions including the rotation and translation. The robot arm system could take a picture of the body that originally was outside the measurement range in a high density without occlusion, and positioning could be done though it was a featureless part as a three-dimensional data.

収録刊行物

  • 生体医工学

    生体医工学 47 (3), 265-275, 2009

    公益社団法人 日本生体医工学会

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