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All Outputs (107)

Crowdsourcing, citizen science or volunteered geographic information? The current state of crowdsourced geographic information (2016)
Journal Article
See, L., Mooney, P., Foody, G. M., Bastin, L., Comber, A., Estima, J., Fritz, S., Kerle, N., Jiang, B., Laakso, M., Liu, H.-Y., Milčinski, G., Nikšič, M., Painho, M., Podor, A., Olteanu-Raimond, A.-M., & Rutzinger, M. (2016). Crowdsourcing, citizen science or volunteered geographic information? The current state of crowdsourced geographic information. ISPRS International Journal of Geo-Information, 5(5), 55. https://doi.org/10.3390/ijgi5050055

Citizens are increasingly becoming an important source of geographic information, sometimes entering domains that had until recently been the exclusive realm of authoritative agencies. This activity has a very diverse character as it can, amongst oth... Read More about Crowdsourcing, citizen science or volunteered geographic information? The current state of crowdsourced geographic information.

Learning-Based Superresolution Land Cover Mapping (2016)
Journal Article
Ling, F., Zhang, Y., Foody, G. M., Li, X., Zhang, X., Fang, S., Li, W., & Du, Y. (2016). Learning-Based Superresolution Land Cover Mapping. IEEE Transactions on Geoscience and Remote Sensing, 54(7), 3794-3810. https://doi.org/10.1109/TGRS.2016.2527841

Super-resolution mapping (SRM) is a technique for generating a fine spatial resolution land cover map from coarse spatial resolution fraction images estimated by soft classification. The prior model used to describe the fine spatial resolution land c... Read More about Learning-Based Superresolution Land Cover Mapping.

A Superresolution Land-Cover Change Detection Method Using Remotely Sensed Images With Different Spatial Resolutions (2016)
Journal Article
Li, X., Ling, F., Foody, G. M., & Du, Y. (2016). A Superresolution Land-Cover Change Detection Method Using Remotely Sensed Images With Different Spatial Resolutions. IEEE Transactions on Geoscience and Remote Sensing, 54(7), 3822-3841. https://doi.org/10.1109/TGRS.2016.2528583

The development of remote sensing has enabled the acquisition of information on land-cover change at different spatial scales. However, a trade-off between spatial and temporal resolutions normally exists. Fine-spatial-resolution images have low temp... Read More about A Superresolution Land-Cover Change Detection Method Using Remotely Sensed Images With Different Spatial Resolutions.

Geographically weighted evidence combination approaches for combining discordant and inconsistent volunteered geographical information (2016)
Journal Article
Comber, A., Fonte, C., Foody, G. M., Fritz, S., Harris, P., Olteanu-Raimond, A.-M., & See, L. (in press). Geographically weighted evidence combination approaches for combining discordant and inconsistent volunteered geographical information. Geoinformatica Polonica, 20(3), https://doi.org/10.1007/s10707-016-0248-z

There is much interest in being able to combine crowdsourced data. One of the critical issues in information sciences is how to combine data or information that are discordant or inconsistent in some way. Many previous approaches have taken a majorit... Read More about Geographically weighted evidence combination approaches for combining discordant and inconsistent volunteered geographical information.

The scale of VGI in map production: a perspective of European National Mapping Agencies (2016)
Journal Article
Olteanu-Raimond, A.-M., Hart, G., Foody, G. M., Touya, G., Kellenberger, T., & Demetriou, D. (in press). The scale of VGI in map production: a perspective of European National Mapping Agencies. Transactions in GIS, https://doi.org/10.1111/tgis.12189

The perspective of European National Mapping Agencies (NMA) on the role of citizen sensing in map production was explored. The NMAs varied greatly in their engagement with the community generating volunteered geographic information (VGI) and in their... Read More about The scale of VGI in map production: a perspective of European National Mapping Agencies.

Impacts of species misidentification on species distribution modeling with presence-only data (2015)
Journal Article
Costa, H., Foody, G. M., Jiménez, S., & Silva, L. (2015). Impacts of species misidentification on species distribution modeling with presence-only data. ISPRS International Journal of Geo-Information, 4(4),

Spatial records of species are commonly misidentified, which can change the predicted distribution of a species obtained from a species distribution model (SDM). Experiments were undertaken to predict the distribution of real and simulated species us... Read More about Impacts of species misidentification on species distribution modeling with presence-only data.

Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality (2015)
Journal Article
Foody, G. M., See, L., Fritz, S., van der Velde, M., Perger, C., Schill, C., Boyd, D., & Comber, A. (2015). Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality. Cartographic Journal, 52(4), https://doi.org/10.1080/00087041.2015.1108658

Crowdsourcing is a popular means of acquiring data, but the use of such data is limited by concerns with its quality. This is evident within cartography and geographical sciences more generally, with the quality of volunteered geographic information... Read More about Accurate attribute mapping from volunteered geographic information: issues of volunteer quantity and quality.

An assessment of citizen contributed ground reference data for land cover map accuracy assessment (2015)
Journal Article
Foody, G. M. (2015). An assessment of citizen contributed ground reference data for land cover map accuracy assessment. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2(3/W5), https://doi.org/10.5194/isprsannals-II-3-W5-219-2015

It is now widely accepted that an accuracy assessment should be part of a thematic mapping programme. Authoritative good or best practices for accuracy assessment have been defined but are often impractical to implement. Key reasons for this situatio... Read More about An assessment of citizen contributed ground reference data for land cover map accuracy assessment.

Enhancing the spatial resolution of satellite-derived land surface temperature mapping for urban areas (2015)
Journal Article
Feng, X., Foody, G., Aplin, P., & Gosling, S. (2015). Enhancing the spatial resolution of satellite-derived land surface temperature mapping for urban areas. Sustainable Cities and Society, 19, https://doi.org/10.1016/j.scs.2015.04.007

Land surface temperature (LST) is an important environmental variable for urban studies such as those focused on the urban heat island (UHI). Though satellite-derived LST could be a useful complement to traditional LST data sources, the spatial resol... Read More about Enhancing the spatial resolution of satellite-derived land surface temperature mapping for urban areas.

Usability of VGI for validation of land cover maps (2015)
Journal Article
Fonte, C., Bastin, L., See, L., Foody, G. M., & Lupia, F. (2015). Usability of VGI for validation of land cover maps. International Journal of Geographical Information Science, 29(7), https://doi.org/10.1080/13658816.2015.1018266

Volunteered Geographic Information (VGI) represents a growing source of potentially valuable data for many applications, including land cover map validation. It is still an emerging field and many different approaches can be used to take value from V... Read More about Usability of VGI for validation of land cover maps.

Valuing map validation: the need for rigorous land cover map accuracy assessment in economic valuations of ecosystem services (2015)
Journal Article
Foody, G. M. (2015). Valuing map validation: the need for rigorous land cover map accuracy assessment in economic valuations of ecosystem services. Ecological Economics, 111(March), https://doi.org/10.1016/j.ecolecon.2015.01.003

Valuations of ecosystem services often use data on land cover class areal extent. Area estimates from land cover maps may be biased by misclassification error resulting in flawed assessments and inaccurate valuations. Adjustment for misclassification... Read More about Valuing map validation: the need for rigorous land cover map accuracy assessment in economic valuations of ecosystem services.

Good practices for estimating area and assessing accuracy of land change (2014)
Journal Article
Olofsson, P., Foody, G. M., Herold, M., Stehman, S. V., Woodcock, C. E., & Wulder, M. A. (2014). Good practices for estimating area and assessing accuracy of land change. Remote Sensing of Environment, 148, 42-57. https://doi.org/10.1016/j.rse.2014.02.015

The remote sensing science and application communities have developed increasingly reliable, consistent, and robust approaches for capturing land dynamics to meet a range of information needs. Statistically robust and transparent approaches for asses... Read More about Good practices for estimating area and assessing accuracy of land change.

Rating crowdsourced annotations: evaluating contributions of variable quality and completeness (2013)
Journal Article
Foody, G. M. (2014). Rating crowdsourced annotations: evaluating contributions of variable quality and completeness. International Journal of Digital Earth, 7(8), 650-670. https://doi.org/10.1080/17538947.2013.839008

Crowdsourcing has become a popular means to acquire data about the Earth and its environment inexpensively, but the data-sets obtained are typically imperfect and of unknown quality. Two common imperfections with crowdsourced data are the contributio... Read More about Rating crowdsourced annotations: evaluating contributions of variable quality and completeness.

Assessing the accuracy of volunteered geographic information arising from multiple contributors to an internet based collaborative project (2013)
Journal Article
Foody, G. M., See, L., Fritz, S., Van der Velde, M., Perger, C., Schill, C., & Boyd, D. (2013). Assessing the accuracy of volunteered geographic information arising from multiple contributors to an internet based collaborative project. Transactions in GIS, 17(6), 847-860. https://doi.org/10.1111/tgis.12033

The recent rise of neogeography and citizen sensing has increased the opportunities for the use of crowdsourcing as a means to acquire data to support geographical research. The value of the resulting volunteered geographic information is, however, o... Read More about Assessing the accuracy of volunteered geographic information arising from multiple contributors to an internet based collaborative project.

Impact of land cover patch size on the accuracy of patch area representation in HNN-based super resolution mapping (2012)
Journal Article
Muad, A. M., & Foody, G. M. (2012). Impact of land cover patch size on the accuracy of patch area representation in HNN-based super resolution mapping. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 5(1418 - 1427), 1418-1427. https://doi.org/10.1109/JSTARS.2012.2191145

Mixed pixels are one of the largest sources of error and uncertainty in mapping from remotely sensed data. A Hopfield neural network based approach to super-resolution mapping has become popular for mapping at a sub-pixel scale, partly because it see... Read More about Impact of land cover patch size on the accuracy of patch area representation in HNN-based super resolution mapping.

An overview of recent remote sensing and GIS based research in ecological informatics (2011)
Journal Article
Boyd, D. S., & Foody, G. M. (2011). An overview of recent remote sensing and GIS based research in ecological informatics. Ecological Informatics, 6(1), https://doi.org/10.1016/j.ecoinf.2010.07.007

This article provides an overview of some of the recent research in ecological informatics involving remote sensing and GIS. Attention focuses on a selected range of issues including topics such as the nature of remote sensing data sets, issues of ac... Read More about An overview of recent remote sensing and GIS based research in ecological informatics.

Assessing the accuracy of land cover change with imperfect ground reference data (2010)
Journal Article
Foody, G. M. (2010). Assessing the accuracy of land cover change with imperfect ground reference data. Remote Sensing of Environment, 114(10), https://doi.org/10.1016/j.rse.2010.05.003

The ground data used as a reference in the validation of land cover change products are often not an ideal gold standard but degraded by error. The effects of ground reference data error on the accuracy of land cover change detection and the accuracy... Read More about Assessing the accuracy of land cover change with imperfect ground reference data.

Feature selection for classification of hyperspectral data by SVM (2010)
Journal Article
Pal, M., & Foody, G. M. (2010). Feature selection for classification of hyperspectral data by SVM. IEEE Transactions on Geoscience and Remote Sensing, 48(5), https://doi.org/10.1109/TGRS.2009.2039484

SVM are attractive for the classification of remotely sensed data with some claims that the method is insensitive to the dimensionality of the data and so not requiring a dimensionality reduction analysis in pre-processing. Here, a series of classifi... Read More about Feature selection for classification of hyperspectral data by SVM.