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http://dx.doi.org/10.11108/kagis.2012.15.1.087

A Study on Mapping 3-D River Boundary Using the Spatial Information Datasets  

Choung, Yun-Jae (Institute of Spatial Information Technology Research, U&GIT Co., Ltd.)
Park, Hyen-Cheol (Institute of Spatial Information Technology Research, Geo C&I Co., Ltd.)
Jo, Myung-Hee (Dept. of Satellite Geoinformatic Engineering, Kyungil University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.15, no.1, 2012 , pp. 87-98 More about this Journal
Abstract
A river boundary is defined as the intersection between a main stream of a river and the land. Mapping of the river boundary is important for the protection of the properties in river areas, the prevention of flooding and the monitoring of the topographic changes in river areas. However, the utilization of the ground surveying technologies is not efficient for the mapping of the river boundary due to the irregular surfaces of river zones and the dynamic changes of water level of a river stream. Recently, the spatial information data sets such as the airborne LiDAR and aerial images are widely used for coastal mapping due to the acquisition of the topographic information without human accessibility. Due to these advantages, this research proposes a semi-automatic method for mapping of the river boundary using the spatial information data set such as the airborne LiDAR and the aerial photographs. Multiple image processing technologies such as the image segmentation algorithm and the edge detection algorithm are applied for the generation of the 3D river boundary using the aerial photographs and airborne topographic LiDAR data. Check points determined by the experienced expert are used for the measurement of the horizontal and vertical accuracy of the generated 3D river boundary. Statistical results show that the generated river boundary has a high accuracy in horizontal and vertical direction.
Keywords
Airborne LiDAR; Aerial Photographs; Digital Image Processing; Edge Detection Algorithm; Image Segmentation Algorithm; River Boundary;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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