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A STUDY ON METHODS FOR QUALITY CONTROL OF SPATIAL DATA IN THE ...

Source: www.commission4.isprs.org
Topic: Quality Control

Sort Desciption: Therefore the authors studied the problem of quality control of spatial data while ... The main purpose of the study was to control the quality of ...

Content Inside: ISPRS Workshop on Service and Application of Spatial Data Infrastructure XXXVI (4/W6) Oct.14-16 Hangzhou China 221 A STUDY ON METHODS FOR QUALITY CONTROL OF SPATIAL DATA IN THE POYANG LAKE AREA Xiaosheng Liu ab * Weibo Wu b Xiaoli Zhu c a Civil Engineering Institute Tongji University Shanghai China - Lxs9103@163.com b School of Environmental and Architectural Engineering JiangXi University of Science and Technology Ganzhou China - (Lxs9103wuweibo1999)@163.com c College of Environment and Planning Henan University Kaifeng China - xlzhu1981@163.com KEY WORDS: Classification Data Floods GIS Metadata Spatial ABSTRACT: The Poyang Lake is the largest fresh water lake in China of which the vast area is about 39955 km 2 . The Poyang Lake Area on the other hand is the place where floods often occur. In order to reduce the impact and damage of floods on the lives and properties of people living in the Poyang Lake Area the authors have developed a Geographical Information System for preventing and controlling floods in the Poyang Lake Area with the strong assist of the Science and Technology Office and the Water Conservancy Office in Jiangxi province. The system blended various techniques to obtain transmit and process spatial data. Various techniques produced a large quantity of spatial data which provided abundant and thorough information support for the fast and accurate decision on preventing and controlling floods but a higher request to control the quality of spatial data was brought forward to us at the same time. Therefore the authors studied the problem of quality control of spatial data while developing the Geographical Information System for preventing and controlling floods in the Poyang Lake Area. According to the occurring sequence of quality problems of spatial data the authors classified these problems analyzed their reasons and proposed the control methods of them. This paper depicts and discusses the whole process of the study at five stages of ...

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