IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 3 - WATER ENGINEERING AND CIVILIZATION : A New Style Ruler and Supporting Image Detection Algorithm for Urban Flood Water Level Measurement
A New Style Ruler and Supporting Image Detection Algorithm for Urban Flood Water Level Measurement
Author : Daqi Zhang, Chunwen Li and Guangqian Wang
In hydrographic survey field, image processing provides a reliable method for water level detection. However, traditional rulers do not suit image detection especially on condition that weak lights or some floating disturbs which all can affect image detection results. Furthermore, there are still some problems such as ?0? water level misdetection and blurred water edge in urban flood supervision. Usually there are two ways to improve image detection results: one is to strive for good performance of image detection algorithm, the other is to design the ruler with notable characteristics for image recognition. This paper focuses on the latter because it can economically change traditional detection algorithms into more effective and robust ones. Through the skilled adoption of a geometric pattern for marking the calibrations on ruler and a freely moving dark floater, a synthesized design scheme is obtained and its supporting image detection algorithm is proposed simultaneously. Experiments accomplished indicate that new acquisitions do improve the image detection result for water level measurement. New ruler and its supporting image detection algorithm are likely to obtain widening application in flood or other water resource supervision and safety forecast.
File Size : 580,126 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 3 - WATER ENGINEERING AND CIVILIZATION
Date Published : 18/07/2016
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