マンホール内設備調査システム

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タイトル別名
  • Manhole Facility Inspection System.
  • マンホールナイ セツビ チョウサ システム

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This paper introduces an inspection system now under development which enables a very large number of manholes to be maintained. The purpose of the system is to make inspection work both safe and efficient. The inspection work is achieved by digital image processing. Images inside a manhole are recorded through a video camera which is attached to the top of a robot and controlled by an operator on the ground. The images are processed in various ways by a computer with the aid of the operator. The facility plan is drawn automatically on the basis of processed results. First, this paper presents high-accuracy edge orientation and curvature measurement methods, and facility recognition algorithms using edge curvature. Next, it describes facility inspection for an actual manhole.

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