@inproceedings{81fb03381a204388bb6bc94c35458f06,
title = "Forest crown cover estimation in northern boreal and temperate European forest",
abstract = "A method for forest crown cover estimation using high resolution optical earth observation data was developed and tested at four study sites in Europe. Crown cover was estimated using the probability estimation method of VTT and Image2006 data. The accuracy of the crown cover predictions was assessed using reference data that were collected by visual interpretation of very high resolution aerial and space borne imagery. The average crown cover values in the reference data varied from 17 % to 86 % and in the predictions from 18 % to 80 %. The absolute root mean square error of the crown cover predictions varied between 14 % and 33 %. The results of the study showed that it is possible to map forest crown cover with twenty to thirty meter spatial resolution optical earth observation data using the single pixel values. However, understanding the variable results at different sites requires further investigation.",
keywords = "remote sensing, optical, forest, density, crown cover, boreal, temperate",
author = "Laura Sirro and Tuomas H{\"a}me and Heikki Ahola and Anne L{\"o}nnqvist",
year = "2012",
language = "English",
isbn = "978-929092271-1",
series = "ESA Special Publication",
publisher = "European Space Agency (ESA)",
number = "SP-707",
booktitle = "Proceedings of the First Sentinel-2 Preparatory Symposium",
address = "France",
edition = "cd-rom",
note = "1st Sentinel-2 Preparatory Symposium ; Conference date: 23-04-2012 Through 27-04-2012",
}