Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W7, 1181-1187, 2017
https://doi.org/10.5194/isprs-archives-XLII-2-W7-1181-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
 
14 Sep 2017
POPULATION ESTIMATION IN SINGAPORE BASED ON REMOTE SENSING AND OPEN DATA
H. Guo1, K. Cao1, and P. Wang2 1Department of Geography, National University of Singapore, Singapore
2Department of Real Estate, National University of Singapore, Singapore
Keywords: Population Estimation, Remote Sensing, Open Data, GIS, Singapore Abstract. Population estimation statistics are widely used in government, commercial and educational sectors for a variety of purposes. With growing emphases on real-time and detailed population information, data users nowadays have switched from traditional census data to more technology-based data source such as LiDAR point cloud and High-Resolution Satellite Imagery. Nevertheless, such data are costly and periodically unavailable. In this paper, the authors use West Coast District, Singapore as a case study to investigate the applicability and effectiveness of using satellite image from Google Earth for extraction of building footprint and population estimation. At the same time, volunteered geographic information (VGI) is also utilized as ancillary data for building footprint extraction. Open data such as Open Street Map(OSM)could be employed to enhance the extraction process. In view of challenges in building shadow extraction, this paper discusses several methods including buffer, mask and shape index to improve accuracy. It also illustrates population estimation methods based on building height and number of floor estimates. The results show that the accuracy level of housing unit method on population estimation can reach 92.5 %, which is remarkably accurate. This paper thus provides insights into techniques for building extraction and fine-scale population estimation, which will benefit users such as urban planners in terms of policymaking and urban planning of Singapore.
Conference paper (PDF, 2167 KB)


Citation: Guo, H., Cao, K., and Wang, P.: POPULATION ESTIMATION IN SINGAPORE BASED ON REMOTE SENSING AND OPEN DATA, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W7, 1181-1187, https://doi.org/10.5194/isprs-archives-XLII-2-W7-1181-2017, 2017.

BibTeX EndNote Reference Manager XML