Determination of Shape and Fall Velocity of Raindrops by Image Processing

• MURAMOTO Ken-Ichiro

  Faculty of Engineering, Kanazawa University

抄録

A computer-based system for the automatic determination of the physical parameters of rainfall was developed. The measuring device consists of a light source and two TV cameras. Images of raindrops that fell through the slit were observed on a frosted glass plate as shadow images which were photographed simultaneously by two TV cameras with different shutter speeds and analyzed. The data indicated that the shape of raindrops were spheroid in case of small diameter but were slightly deformed into an oblate spheroid in case of larger diameter, and the fall velocity tends to increase with increasing size of raindrops. Rainfall rates calculated from the shape and velocity were compared with those measured directly and found to agree.

収録刊行物

• IEICE transactions on information and systems

  IEICE transactions on information and systems 78 (8), 1051-1057, 1995-08-25

  一般社団法人電子情報通信学会

キーワード

• image processing
• raindrop
• shape
• fall velocity
• rainfall rate

詳細情報

• CRID: 1574231877101055488
• NII論文ID: 110003209568
• NII書誌ID: AA10826272
• ISSN: 09168532
• 本文言語コード: en
• データソース種別:
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