Documentation

3D measurement enables to record the data of culturally valuable building and its current state with high accuracy. It is especially impotant in case of the objects in poor condition and close to destruction, enabling to save at least the image as a part of cultural history. In addition, it enables high quality acquisition of detailed surfaces, using modern 3D technology to carry out cm-accurate on-screen measurements of structural dimension, both outside and inside of the heritage site.

In Milestone 1 research of 3D modelling software and technologies available is carried out by TUT and CCK. The aim of the research is to map the latest possible solutions along with their strenghts and weaknesses based on the information available (product descriptons, previous tests and studies etc).

3D measurements of 2 selected churches (Pöide in  Estonia,…. in Sweden,) will be carried out with 3D laser scanners by a subcontractor.  The measurement data will be used for documentation purposes and other user scenarios (3D modelling for visually aesthetic interaction, providing additional value for local community to use the model in several occations, eg attracting more tourists; basis for virtual reconstruction of the original look of the building etc).

The scope of the action plan  is dependent on the price offers for the activities.

Maximum plan (two churces):

Laser scanning is crucial to have high quality local survey. During several exterior and interior laser scans will be created very accurate pointcloud about the site (building) which is the base of further processing’s.
Data processing consists: registration, meshing,  texture mapping and necessary information extraction.
After cleaning the pointcloud is needful to create:
 a) accurate mesh from simplified pointcloud;
 b) cross-sections, including 2D plans;
 c) adding local information;
 d) adding moisture measurement information based on local references;
 e) general model;
 f) photo/texture mapping;
 g) output for web viewing;
 h)  to test and use 3D-COFORM Annotation Tool to describe and mark important areas.
Possibly must be avoided mesh transferring to guarantee the quality and accuracy.
If necessary and needful it is possible to create BIM model from pointcloud afterwards.
Minimum plan (one church):
Laser scanning is crucial to have base of high quality local survey. During several exterior and interior laser scans will be created very accurate pointcloud about the site (building) which is the base of further processing’s.

After cleaning the pointcloud is needful to create:
 a) general model from pointcloud;
 b) 2D plans;
 c) adding local information; maybe also not to do?
 f) photo/texture mapping; maybe also not to do?
 g) output for web viewing.

Possessing of high quality pointcloud allows engeneers or other specialists to do accurate and/or BIM model, cross-sections, and add annotations to the model.