Volume Measurement of Municipal Solid Waste in a Hopper Using the Stereo Image Processing Technique

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  • Itoh Daisuke
    京都大学大学院工学研究科環境工学
  • Takaoka Masaki
    Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyoto University
  • Nakatsuka Daisuke
    TAKUMA, Co., Ltd.
  • Kakuta Yoshitada
    Department of Environmental Resource Engineering, Graduate School of Engineering, Hokkaido University
  • Takeda Nobuo
    Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyoto University
  • Fujiwara Takeshi
    Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyoto University
  • Oshita Kazuki
    Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyoto University

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Other Title
  • ステレオ画像処理を用いたごみ焼却炉ホッパ内のごみ体積の計測
  • ステレオ ガゾウ ショリ オ モチイタ ゴミ ショウキャクロ ホッパ ナイ ノ ゴミ タイセキ ノ ケイソク

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Abstract

In order to figure waste density and how much waste should be fed into a furnace, it is important to understand any changes in waste volume. In this study, a system was developed for calculating the volume of waste in a hopper using a stereo image processing technique equipped with a digital camera that has three CCDs for obtaining the surface shape of waste in the hopper. First, accuracy of the distance measurement using the digital camera with three CCDs was achieved to establish a method for automatically collecting data and calculating volume by using a computer and a camera. This system was applied to measure the volume of real waste in a municipal solid waste incinerator. The surface shape and the volume of real waste in the hopper were continuously measured and calculated. The results, using the stereo image processing technique, were in almost perfect agreement with those using a laser distance meter. As a result, it was confirmed that the link-up between the system calculating waste volume using the stereo image processing technique and a waste compaction and feeding model can create an advanced waste feeding system that estimates the volume and weight of waste fed into furnace from the volume and density of waste fed into the hopper.

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