SWIMCAT

Singapore Whole sky IMaging CATegories Database

The SWIMCAT dataset contains 784 images of sky/cloud patches, categorized in 5 distinct categories: clear sky, patterned clouds, thick dark clouds, thick white clouds, and veil clouds. Representative sample images from each category are shown below.

SWIMCAT

All images were captured in Singapore using WAHRSIS, a calibrated ground-based whole sky imager, over a period of 17 months from January 2013 to May 2014. The patches have a dimension of 125x125 pixels.

The dataset is released under a creative commons license and can be downloaded here: swimcat.zip (13MB). The zip-file is encrypted; please email us for the password.

More details about the dataset can be found in the following paper:

S. Dev, Y. H. Lee, S. Winkler.
Categorization of cloud image patches using an improved texton-based approach.
Proc. IEEE International Conference on Image Processing (ICIP), Québec City, Canada, Sep. 27-30, 2015.

Please cite the above paper if you use the SWIMCAT dataset.