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Remote Sens. 2018, 10(3), 480;

Generating Continental Scale Pixel-Based Surface Reflectance Composites in Coastal Regions with the Use of a Multi-Resolution Tidal Model

National Earth and Marine Observations Branch, Geoscience Australia, Symonston, ACT 2609, Australia
Research School of Finance, Actuarial Studies, and Statistics, Australian National University, Acton, ACT 2601, Australia
Author to whom correspondence should be addressed.
Received: 1 March 2018 / Revised: 19 March 2018 / Accepted: 19 March 2018 / Published: 20 March 2018
(This article belongs to the Section Ocean Remote Sensing)
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Generating continental-scale pixel composites in dynamic coastal and estuarine environments presents a unique challenge, as the application of a temporal or seasonal approach to composite generation is confounded by tidal influences. We demonstrate how this can be resolved using an approach to compositing that provides robust composites of multi-type environments. In addition to the visual aesthetics of the images created, we demonstrate the utility of these composites for further interpretation and analysis. This is enabled by the manner in which our approach captures the spatial variation in tidal dynamics through the use of a Voronoi mesh, and preserves the band relationships within the modelled spectra at each pixel. Case studies are presented which include continental-scale mosaics of the Australian coastline at high and low tide, and tailored examples demonstrating the potential of the tidally constrained composites to address a range of coastal change detection and monitoring applications. We conclude with a discussion on the potential applications of the composite products and method in the coastal and marine environment, as well as further development directions for our tidal modelling framework. View Full-Text
Keywords: coastal; pixel-based composites; tidal; Landsat; change detection coastal; pixel-based composites; tidal; Landsat; change detection

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Sagar, S.; Phillips, C.; Bala, B.; Roberts, D.; Lymburner, L. Generating Continental Scale Pixel-Based Surface Reflectance Composites in Coastal Regions with the Use of a Multi-Resolution Tidal Model. Remote Sens. 2018, 10, 480.

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