气候变化领域集成服务门户(CCPortal): Open-source algorithm for detecting sea ice surface features in high-resolution optical imagery

CCPortal

DOI	10.5194/tc-12-1307-2018
	Open-source algorithm for detecting sea ice surface features in high-resolution optical imagery
	Wright N.C.; Polashenski C.M.
发表日期	2018
ISSN	19940416
卷号	12 期号:4
英文摘要	Snow, ice, and melt ponds cover the surface of the Arctic Ocean in fractions that change throughout the seasons. These surfaces control albedo and exert tremendous influence over the energy balance in the Arctic. Increasingly available meter-to decimeter-scale resolution optical imagery captures the evolution of the ice and ocean surface state visually, but methods for quantifying coverage of key surface types from raw imagery are not yet well established. Here we present an open-source system designed to provide a standardized, automated, and reproducible technique for processing optical imagery of sea ice. The method classifies surface coverage into three main categories: snow and bare ice, melt ponds and submerged ice, and open water. The method is demonstrated on imagery from four sensor platforms and on imagery spanning from spring thaw to fall freeze-up. Tests show the classification accuracy of this method typically exceeds 96%. To facilitate scientific use, we evaluate the minimum observation area required for reporting a representative sample of surface coverage. We provide an open-source distribution of this algorithm and associated training datasets and suggest the community consider this a step towards standardizing optical sea ice imagery processing. We hope to encourage future collaborative efforts to improve the code base and to analyze large datasets of optical sea ice imagery. © 2018 Author(s).
学科领域	accuracy assessment; albedo; algorithm; detection method; energy balance; image processing; imagery; optical method; sea ice; standardization; Arctic Ocean
语种	英语
scopus关键词	accuracy assessment; albedo; algorithm; detection method; energy balance; image processing; imagery; optical method; sea ice; standardization; Arctic Ocean
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119180
作者单位	Thayer School of Engineering, Dartmouth College, Hanover, NH, United States; U.S. Army Cold Regions Research and Engineering Laboratories, Hanover, NH, United States
推荐引用方式 GB/T 7714	Wright N.C.,Polashenski C.M.. Open-source algorithm for detecting sea ice surface features in high-resolution optical imagery[J],2018,12(4).
APA	Wright N.C.,&Polashenski C.M..(2018).Open-source algorithm for detecting sea ice surface features in high-resolution optical imagery.Cryosphere,12(4).
MLA	Wright N.C.,et al."Open-source algorithm for detecting sea ice surface features in high-resolution optical imagery".Cryosphere 12.4(2018).