In such a case, the detection of cloud and cloud shadows may not be significantly improved for Landsat data compared to the Fmask version 3.3, especially for mountain areas and water regions, where more commission errors may be resulted in, but the outputs will be more like the ones generated using version 3.3, which are also good to use. Note that previous versions do not provide any notifications even when it fails to locate the dataset, and if you have already runned the previous versions of Fmask using the Linux standalone, it is highly possible that the dataset has been ignored.
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Please see an example how to address this issue from this link. The directory of the auxiliary data usually is at the same location as the installed application. However, particularly for the Linux standalone, if it fails to locate the auxiliary data, please set up the direct path of the auxiliary data package by using the command, for example, Fmask_4_6 "xxx\xxx\xxx\AuxiData". The Matlab code or Windows standalones can automatedly locate the package of the global auxiliaray data, and there will be a notification regarding the dataset (successfully located or not) when runinng the Fmask. USE of GLOBAL AUXILIARY DATA: (Matlab code or windows standalone users can ignore this) Note that the Fmask softwares/standalones include MATLAB Compiler Runtime (MCR), with ~2G in total, which do not require a MATLAB license. Note that Mapping Toolbox in Matlab is required for using the source code.įmask 4.6 softwares/standalones with graphical User Interface (UI) and without UI on Windows or Linux can be downloaded from this Google Drive.
The folder includes the auxiliary dataset. autoFmaskBacth can process all Landsats 4-9 and Sentinel-2 images into a folder.
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The full Matlab code package with GLOBAL AUXILIARY DATA (~1G) is available at this Google Drive, where autoFmask is the main function for processing an image. If you have any questions, please contact Zhe Zhu ( and Shi Qiu ( at Department of Natural Resources and the Environment, University of Connecticut.įmask 4.6 improved the cloud and cloud shadow detection by integrating a global auxiliray data including DEM and water layer, and this Github page ONLY provides the Matlab code due to the storage limitation of the repository.
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The software called Fmask (Function of mask) is used for automated clouds, cloud shadows, snow, and water masking for Landsats 4-9 and Sentinel 2 images.
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