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Quantification of visibility using d...

Raina, Dhruv Shuban.

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Quantification of visibility using digital imaging technology in the Paso del Norte airshed.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Quantification of visibility using digital imaging technology in the Paso del Norte airshed./
作者:	Raina, Dhruv Shuban.
面頁冊數:	188 p.
附註:	Source: Masters Abstracts International, Volume: 43-03, page: 0956.
Contained By:	Masters Abstracts International43-03.
標題:	Engineering, Environmental. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1423703
ISBN:	9780496116294

Quantification of visibility using digital imaging technology in the Paso del Norte airshed.
Raina, Dhruv Shuban.

Quantification of visibility using digital imaging technology in the Paso del Norte airshed. - 188 p.

Source: Masters Abstracts International, Volume: 43-03, page: 0956.

Thesis (M.S.)--The University of Texas at El Paso, 2005.

Historically, "visibility" has been defined as "the greatest distance at which an observer can just see a black object viewed against the horizon sky" (Malm et al., 1981). Dramatic visibility reduction in the Paso del Norte Airshed (PdNA) region occurs frequently in winter, particularly during inversions and severe sandstorms. The Texas Commission on Environmental Quality (TCEQ) initiated monitoring of visibility in PdNA over a decade ago with video and 35mm transparency film. Variability in recording performance of video and batch-to-batch variation in film made quantitative assessment of visibility by image analysis challenging. Recently, a digital camera network was installed by TCEQ in the PdNA and has provided 15-minute images to an archive operated by the University of Texas at El Paso. It was found that the image quality is reproducible and useful for quantitative analysis of visibility conditions in PdNA and developed a novel methodology for quantifying visual deterioration of a scenic vista. (Abstract shortened by UMI.)

ISBN: 9780496116294Subjects--Topical Terms:

783782
Engineering, Environmental.

Quantification of visibility using digital imaging technology in the Paso del Norte airshed.
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