Scarica gli atti - Gruppo del Colore

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Template
matching
Fig. 6 – A semi-automated approach to mosaicking devised by the authors. The user is
asked to identify corresponding areas (above), but the exact spatial match between those
areas is computed automatically by means of image processing techniques (below). This
approach does not invest the user with the responsibility of a precise (i.e., pixel-wise)
match, which can be difficult when inspecting by eye.
On the other hand, some artifacts have a strong three-dimensional component that
contributes to their nature and appearance at least as much as their color. Such
artifacts range from low reliefs, and possibly even some kind of paintings, to fully
three-dimensional objects such as archaeological material or statues. In all these
cases, the effect of shape on the color appearance of the object or scene must be
evaluated, and appropriate actions must be taken to account for it. Also, a complete
and more useful / realistic representation of the artifact may require the addition of
3D shape data (possibly obtained from specific instruments like 3D laser range
scanners) to the corresponding multispectral color data.
To further test the system and try the features being added, different applications
(especially in the cultural heritage field) are currently part of the authors’ work on
the subject.