Airborne Lidar Change Detection an Overview of Earth Sciences
Earth-Science Reviews 198 (2019) 102929 Contents lists available at ScienceDirect Earth-Science Reviews journal homepage: www.elsevier.com/locate/earscirev Airborne lidar change detection: An overview of Earth sciences applications T ⁎ Unal Okyaya, , Jennifer Tellinga, Craig L. Glenniea, William E. Dietrichb a National Center for Airborne Laser Mapping, Department of Civil and Environmental Engineering, University of Houston, 5000 Gulf Freeway, Building 4, Suite 216, Houston, TX 77204-5059, USA b Department of Earth and Planetary Science, University of California, Berkeley, 307 McCone Hall, Berkeley, CA 94720-4767, USA ARTICLE INFO ABSTRACT Keywords: In the last two decades, airborne laser scanning (ALS) has found widespread application and driven fundamental Multi-temporal advances in the Earth sciences. With increasing availability and accessibility, multi-temporal ALS data have been Airborne laser scanning used to advance key research topics related to dynamic Earth surface processes. This review presents a com- ALS prehensive compilation of existing applications of ALS change detection to the Earth sciences. We cover a wide Repeat lidar scope of material pertinent to the broad field of Earth sciences to encourage the cross-pollination between sub- Change detection disciplines and discuss the outlook of ALS change detection for advancing scientific discovery. While significant progress has been made in applying repeat ALS data to change detection, numerous approaches make funda- mental assumptions that limit the full potential of repeat ALS data. The use of such data for 3D change detection is, therefore, in need of novel, scalable, and computationally efficient processing algorithms that transcend the ever-increasing data density and spatial coverage.
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