淡江大學機構典藏:Item 987654321/46365
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    題名: Liquid-level measurement using a single digital camera
    作者: Wang, Ti-ho;許陳鑑;Hsu, Chen-chien;Lu, Ming-chih;Chen, Cheng-chuan;Tan, Jia-dong
    貢獻者: 淡江大學電機工程學系
    關鍵詞: Liquid level;Digital camera;Measurement system;Image;Subpixel resolution
    日期: 2009-05
    上傳時間: 2010-03-26 22:09:01 (UTC+8)
    出版者: Elsevier
    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.
    關聯: Measurement 42(4), pp.604-610
    DOI: 10.1016/j.measurement.2008.10.006
    顯示於類別:[電機工程學系暨研究所] 期刊論文

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