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			<titleStmt><title level='a'>OPERATIONAL-SCALE GEOAI FOR PAN-ARCTIC PERMAFROST FEATURE DETECTION FROM HIGH-RESOLUTION SATELLITE IMAGERY</title></titleStmt>
			<publicationStmt>
				<publisher>The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences</publisher>
				<date>01/01/2021</date>
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				<bibl> 
					<idno type="par_id">10468158</idno>
					<idno type="doi">10.5194/isprs-archives-XLIV-M-3-2021-175-2021</idno>
					<title level='j'>The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences</title>
<idno>2194-9034</idno>
<biblScope unit="volume">XLIV-M-3-2021</biblScope>
<biblScope unit="issue"></biblScope>					

					<author>M. Udawalpola</author><author>A. Hasan</author><author>A. K. Liljedahl</author><author>A. Soliman</author><author>C. Witharana</author>
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			<abstract><ab><![CDATA[Regional extent and spatiotemporal dynamics of Arctic permafrost disturbances remain poorly quantified. High spatial resolution commercial satellite imagery enables transformational opportunities to observe, map, and document the micro-topographic transitions occurring in Arctic polygonal tundra at multiple spatial and temporal frequencies. The entire Arctic has been imaged at 0.5 m or finer resolution by commercial satellite sensors. The imagery is still largely underutilized, and value-added Arctic science products are rare. Knowledge discovery through artificial intelligence (AI), big imagery, high performance computing (HPC) resources is just starting to be realized in Arctic science. Large-scale deployment of petabyte-scale imagery resources requires sophisticated computational approaches to automated image interpretation coupled with efficient use of HPC resources. In addition to semantic complexities, multitude factors that are inherent to sub-meter resolution satellite imagery, such as file size, dimensions, spectral channels, overlaps, spatial references, and imaging conditions challenge the direct translation of AI-based approaches from computer vision applications. Memory limitations of Graphical Processing Units necessitates the partitioning of an input satellite imagery into manageable sub-arrays, followed by parallel predictions and post-processing to reconstruct the results corresponding to input image dimensions and spatial reference. We have developed a novel high performance image analysis framework –Mapping application for Arctic Permafrost Land Environment (MAPLE) that enables the integration of operational-scale GeoAI capabilities into Arctic science applications. We have designed the MAPLE workflow to become interoperable across HPC architectures while utilizing the optimal use of computing resources.</p>]]></ab></abstract>
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