Combining data mining algorithm and object-based image analysis for detailed urban mapping of hyperspectral images

Alireza Hamedianfar; Helmi Zulhaidi M. Shafri; Shattri Mansor; Noordin Ahmad

doi:10.1117/1.JRS.8.085091

27 August 2014 Combining data mining algorithm and object-based image analysis for detailed urban mapping of hyperspectral images

Alireza Hamedianfar, Helmi Zulhaidi M. Shafri, Shattri Mansor, Noordin Ahmad

Author Affiliations +

Journal of Applied Remote Sensing, Vol. 8, Issue 1, 085091 (August 2014). https://doi.org/10.1117/1.JRS.8.085091

Abstract

Image classification of roofing types, road pavements, and natural features can assist land-cover maps in further examining the effects of such features on health, pollution, and the microclimate in urban settings. Airborne hyperspectral sensors with high spectral and spatial resolutions can be employed for detailed characterization of urban areas. This study aims to develop a procedure that is instrumental for automated knowledge discovery and mapping of urban surface materials from a large feature space of hyperspectral images. Two different images over Universiti Putra Malaysia (UPM) and Kuala Lumpur (KL), Malaysia, were captured by using hyperspectral sensors with 20 and 128 bands. The images were used to explore the combined performance of a data mining (DM) algorithm and object-based image analysis (OBIA). A large number of attributes were discovered with the C4.5 DM algorithm, which also generated the classification model as a decision tree. The UPM and KL classified images achieved 93.42 and 88.36% overall accuracy. The high accuracy of object-based classification can be linked to the knowledge discovery produced by the DM algorithm. This algorithm increased the productivity of OBIA, expedited the process of attribute selection, and resulted in an easy-to-use representation of a knowledge model from a decision tree structure.

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Alireza Hamedianfar, Helmi Zulhaidi M. Shafri, Shattri Mansor, and Noordin Ahmad "Combining data mining algorithm and object-based image analysis for detailed urban mapping of hyperspectral images," Journal of Applied Remote Sensing 8(1), 085091 (27 August 2014). https://doi.org/10.1117/1.JRS.8.085091

Published: 27 August 2014

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