Abstract
Optimal transport (OT) is a major statistical tool to measure similarity between features or to match and average features. However, OT requires some relaxation and regularization to be robust to outliers. With relaxed methods, as one feature can be matched to several ones, important interpolations between different features arise. This is not an issue for comparison purposes, but it involves strong and unwanted smoothing for transfer applications. We thus introduce a new regularized method based on a non-convex formulation that minimizes transport dispersion by enforcing the one-to-one matching of features. The interest of the approach is demonstrated for color transfer purposes.
A preliminary version of this work has been presented at the NIPS 2014 Workshop on Optimal Transport and Machine Learning (pdf).
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Rabin, J., Papadakis, N. (2015). Non-convex Relaxation of Optimal Transport for Color Transfer Between Images. In: Nielsen, F., Barbaresco, F. (eds) Geometric Science of Information. GSI 2015. Lecture Notes in Computer Science(), vol 9389. Springer, Cham. https://doi.org/10.1007/978-3-319-25040-3_10
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DOI: https://doi.org/10.1007/978-3-319-25040-3_10
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