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status. This is official data which is needed within the context of an International
Convention to provide a legal record of a successful inscription, proving that they
have met all the requirements for nomination.
When such data is submitted to the World Heritage Committee, there are two
possible scenarios:
The candidate cultural heritage site is not accepted and the inscription is deferred.
In this case the file remains alive and the file will receive any updates that the
country will send in order to improve the quality of the data so that the cultural
heritage site can be re-presented as a candidate.
The candidate is accepted. In this case, the cultural heritage site changes status
from “candidate” to “inscribed site” (i.e. inscribed as a World Heritage site). The
file will receive any updates that the country or the Committee wants to add to it
e.g. State of Conservation, Periodic Reporting, etc.
21.1.2 Laser Scanning to Produce 3D Models (Ref. www.helm.org.
uk/upload/pdf/publishing-3d-laser-scanning-reprint.pdf )
The recording of position, dimensions and/or shape is a necessary part of almost
every project related to the documentation and associated conservation of cultural
heritage, forming an important element of the analysis process. For example, know-
ing the size and shape of a topographic feature located in a historic landscape can
help archaeologists identify its significance, knowing how quickly a stone carving
is eroding helps a conservator to determine the appropriate action for its protection,
while simply having access to a clear and accurate record of a building façade helps
a project manager to schedule the work for its restoration.
It is common to present such measurements as plans, sections and/or profiles
plotted onto hardcopy for direct use on site. However, with the introduction of new
methods for three-dimensional measurement and increasing user-friendly software
as well as computer literacy among users, there is a growing demand for three-
dimensional digital information. 3D digital information is widely used because:
It is considered to be a non-invasive technology, so that conservation experts can
work on the different aspects of the site in virtual form without having to step
into the site and eventually damage the site.
It allows the conservation experts an easier and faster form to do research and
assessment of the site without having to be physically on the site
There is a wide variety of techniques for three-dimensional measurement. These
techniques can be characterized by the scale at which they might be used (which is
related to the size of the object they could be used to measure), and on the number
of measurements they might be used to acquire (which is related to the complexity
of the object).
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