Object-based land cover classification based on fusion of multifrequency SAR data and THAICHOTE optical imagery

Chanika Sukawattanavijit; Panu Srestasathiern

doi:10.1117/12.2278687

2 November 2017 Object-based land cover classification based on fusion of multifrequency SAR data and THAICHOTE optical imagery

Chanika Sukawattanavijit, Panu Srestasathiern

Author Affiliations +

Proceedings Volume 10421, Remote Sensing for Agriculture, Ecosystems, and Hydrology XIX; 104211G (2017) https://doi.org/10.1117/12.2278687
Event: SPIE Remote Sensing, 2017, Warsaw, Poland

Abstract

Land Use and Land Cover (LULC) information are significant to observe and evaluate environmental change. LULC classification applying remotely sensed data is a technique popularly employed on a global and local dimension particularly, in urban areas which have diverse land cover types. These are essential components of the urban terrain and ecosystem. In the present, object-based image analysis (OBIA) is becoming widely popular for land cover classification using the high-resolution image. COSMO-SkyMed SAR data was fused with THAICHOTE (namely, THEOS: Thailand Earth Observation Satellite) optical data for land cover classification using object-based. This paper indicates a comparison between object-based and pixel-based approaches in image fusion. The per-pixel method, support vector machines (SVM) was implemented to the fused image based on Principal Component Analysis (PCA). For the objectbased classification was applied to the fused images to separate land cover classes by using nearest neighbor (NN) classifier. Finally, the accuracy assessment was employed by comparing with the classification of land cover mapping generated from fused image dataset and THAICHOTE image. The object-based data fused COSMO-SkyMed with THAICHOTE images demonstrated the best classification accuracies, well over 85%. As the results, an object-based data fusion provides higher land cover classification accuracy than per-pixel data fusion.

Conference Presentation

Citation Download Citation

Chanika Sukawattanavijit and Panu Srestasathiern "Object-based land cover classification based on fusion of multifrequency SAR data and THAICHOTE optical imagery", Proc. SPIE 10421, Remote Sensing for Agriculture, Ecosystems, and Hydrology XIX, 104211G (2 November 2017); https://doi.org/10.1117/12.2278687

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