We present a novel method for single image shadow removal based on region relighting.
We leverage the use of a dataset with annotated shadows to train a classifier that identifies non-shadow regions that neighbor shadow regions of the same material.
We propose to use a neighboring lit region to relight a shadow region.
To do so, we rst match the luminance values of the shadow pixels to
the luminance histogram of the lit region. Then, we adjust the shadow region
chromaticities by adding the diffierence between the median CIELAB a and b
values of the lit region and the shadow region