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Fig. 5.14
Reconstruction results for synthetic data. (
a
) Surface reconstruction by a combined anal-
ysis of one shading and one shadow image according to Sect.
5.2.1
, with uniform surface albedo.
(
b
) Surface reconstruction by photometric stereo (two shading images) according to Sect.
3.3.1
and
one shadow image, with uniform surface albedo. (
c
)Sameas(
b
), but with non-uniform surface
albedo. (
d
) Surface reconstruction by shadow-based initialisation of the surface profile according
to Sect.
5.2.3
, with uniform (
middle
) and non-uniform (
right
) surface albedo. The label of the
z
axis of the
left plot
is valid for all three plots. For detailed comments, cf. Sect.
5.2.4
and Table
5.2
5.2.5 Discussion
In this section we have described a self-consistent scheme for the integration of
shading and shadow features based on at least two pixel-synchronous images of
the same surface part under different illumination conditions. For a small number
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