Liquid-level measurement using a single digital camera

Ti Ho Wang, Ming Chih Lu, Chen Chien Hsu*, Cheng Chuan Chen, Jia Dong Tan

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

46 引文 斯高帕斯(Scopus)

摘要

An imaged-based measurement system using a single digital camera and a circular float to measure fill levels in liquid tanks is proposed in this paper. By choosing the float in a different color from that of the liquid in the tank, pixel counts of the float in the image captured by the camera can be calculated with the use of chrominance filtering and thresholding techniques. Based on an established relationship between the pixel counts of the diameter of the float in the image and the photographing distance, the measuring system can effectively measure the liquid level based on the images captured. Because pixel counts of the float in the image are first determined for calculating the diameter of the float, a subpixel resolution during the measurement can be achieved. As a result, measuring precision as well as accuracy via the proposed system can be significantly improved.

原文英語
頁(從 - 到)604-610
頁數7
期刊Measurement: Journal of the International Measurement Confederation
42
發行號4
DOIs
出版狀態已發佈 - 2009 五月
對外發佈

ASJC Scopus subject areas

  • 儀器
  • 電氣與電子工程

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