| Abstract |
In this paper we introduce a relighting algorithm for
diffuse outdoor scenes that enables us to create geometrically
correct and illumination consistent models from
a series of range scans and a set of overlapping
photographs that have been taken under different
illumination conditions. To perform the relighting
we compute a set of mappings from the overlap
region of two images. We call these mappings
Irradiance Ratio Maps (IRMs). Our
algorithm handles cast shadows, being able to
relight shadowed regions into non-shadowed regions
and vice-versa. We solve these cases by computing
four different IRMs, to handle all four combinations
of shadowed vs non-shadowed surfaces. To relight
the non-overlapping region of an image,
we look into the appropriate IRM which we index
on surface normal, and apply its value to the
corresponding pixels. The result is
an illumination consistent set of images.
Download paper: PDF (version submitted to review - not final)
Animations - Before relighting (12Mb)
After relighting (12Mb)
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