Anisotropic osmosis filter for shadow removal in images

Author: Simone Parisotto

Other authors: L. Calatroni, M. Caliari, C.B. Schoenlieb, J. Weickert

Version 1.0

Date: 19/09/2018

This is a companion software for the paper Anisotropic osmosis filter for shadow removal in images, also available at arXiv repository. Please cite as:

@article{ParCalCalSchWei18,
 author        = {Parisotto, S. and Calatroni, L. and Caliari, M. and Sch\"{o}nlieb, C.B. and Weickert, J.},
 title         = {{Anisotropic osmosis filtering for shadow removal in images}},
 journal       = {Inverse Problems},
 year          = {2019},
 doi           = {10.1088/1361-6420/ab08d2}
}

Example

For a shadowed image (left), identify the shadow boundary (middle-left) and compare the results between the isotropic osmosis filter (middle-right) in [Vogel, Weickert] and the proposed anisotropic osmosis model (right) in [ParCalCalSchWei18].

Software acknowledgements

• Anisotropic Diffusion
• The action of the matrix exponential function: expleja
• Tensor Voting with steerable filters
• Export figures: export_fig
• Cyclic color map: phasemap

License

BSD 3-Clause License