 |
|
Development of the GIS Risk Map of Cultural Heritage (2002-2005)
The aims of this initiative are as follows:
The development of the cultural heritage distribution map, and geo referencing of items. The implementation of the distribution map: Gathering of data on private immovable items subject to restraint. The creating of new user interfaces. The updating and integration of the Data Entry procedure. The setting up and testing of a card route for the rapid surveying of the state of preservation of immovable items. Internet access to data banks.
Data Bank of geo-referenced encumbered immovable items
The operational phases for the creation of the data banks were as follows:
searching through documentation held by Restraint Offices and the Archives of the Superintendencies (architectural, archaeological and others affected by the system) in order to produce a first estimation of its consistency and distribution; collating of all the restraint documentation identified in the previous phase, by means of grey scale photocopying; processing of said data, its computerisation and insertion into the new data bank; geo-referencing of all the immovable items corresponding with the restraint documents collated.The restraint documents concern items that are privately owned property, the property of private bodies, and those owned by the state, correlated with any transcription notes, to the Land Registry, the Land Charge Register, historical-artistic reports and the cartographic and photographic enclosures.
In every case summary lists with a record of all the documents acquired by photocopy in situ were created from scratch, or simply incorporated. In order to classify and identify all the documentation belonging to single restraint orders an adhesive label, with unique and progressively numbered bar codes, was attached to every photocopied sheet.
Once collated, all the paper material was optically recorded (creating raster images) and the logical reconstruction took place of the documentation relating to each individual restraint document by scanning the bar code.
At the end of the processing phase, the raster images were used for data entry activity, which foresaw a double entry of the data and consequent checking of those values that did not match in order to reduce the possibility of errors to a minimum. Where data matched, this was entered into the new production data base, and where this was not the case a series of checks were carried out to identify and correct any errors made during the input phase, allowing corrections to be made.
The uniformity of the coding of data concerning every restraint document has been guaranteed by using a specific structured card to which all the acquired raster images have been linked, relating not only to the restraint documentation itself, but also any possible cartographic and photographic attachments.
The final phase of the procedure foresaw the geo-referencing of the items identified by the restraint documents, and consequently the development of the map of the distribution of the cultural heritage across the national territory.
The geo-referencing activities were carried out according to a process that can
be divided into four phases:
1. the geo-referencing of all the items coming from the data entry, carried out
on the basis of the information found in the restraint documents, by means of
extracting the land registry keys and transforming them into Gauss-Boaga
coordinates (procedures: queries on SISTER [Territory Interchange System]
/ AIMA [State Company for Agricultural Market Activities]; CARTLAB; ARCMAP
Spatial adjustment);
2. the merging of the items coming from the data entry of the restrained
item with those in the ICR data bank, in order to eliminate duplications
and differentiate between restrained items and those not restrained
(procedure: IMBOMO);
3. the geo-referencing of all the remaining items not yet geo-referenced,
by means of locating the land registry keys in sources other than the restraint
documents, or by means of the street address, the IGM place name, the description
in the TCI/LATERZA guides (procedure: GISLOC);
4. the identifying of items, but only in cases where the previous phase has
failed to produce the desired results, directly in the field, and their
geo-referencing by instrumental type detection (procedure: FIELDLOC).
Once all the above phases have been concluded all the items will be geo-referenced. Those included in the guides and that are not affected by restraint decrees are then added to the above.
Point geo-referencing with checks on SisTer and Road Graph
Thematisation by land registry pages.
