ID:
publications-2243
Type:
Peer reviewed articles
Year:
2022
Authors:
Giannopoulos Michalis, Tsagkatakis Grigorios, Tsakalides Panagiotis
Title:
4D U-Nets for Multi-Temporal Remote Sensing Data Classification
Venue/Journal:
remote sensing
DOI:
10.3390/rs14030634
Research type:
Data Management & Analytics
Water System:
Precipitation & Ecological Systems
Technical Focus:
Abstract:
Multispectral sensors constitute a core earth observation imaging technology generating massive high-dimensional observations acquired across multiple time instances. The collected multi-temporal remote sensed data contain rich information for Earth monitoring applications, from flood detection to crop classification. To easily classify such naturally multidimensional data, conventional low-order deep learning models unavoidably toss away valuable information residing across the available dimensions. In this work, we extend state-of-the-art convolutional network models based on the U-Net architecture to their high-dimensional analogs, which can naturally capture multi-dimensional dependencies and correlations. We introduce several model architectures, both of low as well as of high order, and we quantify the achieved classification performance vis-Ã -vis the latest state-of-the-art methods. The experimental analysis on observations from Landsat-8 reveals that approaches based on low-order U-Net models exhibit poor classification performance and are outperformed by our proposed high-dimensional U-Net scheme.
Link with Projects:
842560
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