Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/64874
Title: A multiscale approach to detect spatial-temporal outliers
Authors: Cheng, T
Li, ZL 
Keywords: Detection
Dynamic
Multitemporal
Multiresolution
Thematic
Quality
Issue Date: 2004
Publisher: Copernicus GmbH
Source: International archives of the photogrammetry, remote sensing and spatial information sciences, 2004, v. XXXV-B4, p. 1008-1012 How to cite?
Journal: International archives of the photogrammetry, remote sensing and spatial information sciences 
Abstract: A spatial outlier is a spatial referenced object whose non-spatial attribute values are significantly different from those of other spatially referenced objects in its spatial neighborhood. It represents locations that are significantly different from their neighborhoods even though they may not be significantly different from the entire population. Here we adopt this definition to spatio-temporal domain and define a spatial-temporal outlier (STO) to be a spatial-temporal referenced object whose thematic attribute values are significantly different from those of other spatially and temporally referenced objects in its spatial or/and temporal neighborhood. Identification of STOs can lead to the discovery of unexpected, interesting, and implicit knowledge, such as local instability. Many methods have been recently proposed to detect spatial outliers, but how to detect the temporal outliers or spatial-temporal outliers has been seldom discussed. In this paper we propose a multiscale approach to detect the STOs by evaluating the change between consecutive spatial and temporal scales.
Description: XXth International Congress for Photogrammetry and Remote Sensing (ISPRS Congress), Technical Commussion IV, Istanbul, Turkey, 12-23 July 2004
URI: http://hdl.handle.net/10397/64874
ISSN: 1682-1750
EISSN: 2194-9034
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