Working Groups

The Action identifies 5 working packages, which will be undertaken by the Working Groups:

WG 1: Spectral object documentation

Leader: Dr. Marcello Picollo (IT), vice-leader: Sérgio Nascimento (PT)

1st WG task st1.1 Identification, characterisation and testing of spectral imaging techniques in the visible and near IR field
Spectral imaging techniques undergo a comparable change in technology as do spatial imaging techniques. New developments in optical techniques lead to new means of splitting light resulting in new characteristics for instruments dedicated to monitor the optical spectrum for imaged surfaces. It is therefore necessary to explore the limits and advantages of the actual instruments in this waveband.

2nd WG task st1.2 Identification, characterisation and testing of imaging techniques beyond the visible and short wave radiation
The physical and chemical composition of surfaces is an important factor determining the interaction with light and reflection behaviour. As not all of these factors have an impact in the visible spectrum, instruments exist which are able to measure beyond this radiation. It is necessary to exploit and qualify also these type of instruments because they are often essential for the analysis of the surface composition.

WG 2: Spatial object documentation

Leader: Prof. Robert Sitnik (PL), vice-leader: Miroslav Hain (SK)

1st WG task st2.1 Identification of the main 3D scanning techniques suitable for use in CH objects
The most common 3D scanning techniques in CH digitisation are structured light, stereoscopic imaging and laser scanning, although also a number of other metrology techniques, such as time-of-flight and interferometry, provide useful information in certain environmental conditions. In this task a classification of different techniques applied to 3D scanning of CH will be given, showing conditions of its applicability and limitations.

2nd WG task st2.2 Analysis and comparison of the different 3D scanning techniques
The actual performance of the techniques identified for different types of CH objects will be analysed in great depth based on the identified setups and available expertise. The goal is to analyse the advantages and limitations of these techniques depending on the deciding characteristics, and to stimulate new developments to address the identified drawbacks.


WG 3: Algorithms and procedures

Leader: Prof. Alain Trémeau (FR), vice-leader: Dr. Orla Murphy (IE)

1st WG task st3.1.Registration processes (acquisition,filtering and view integration)
Optical systems provide data for one field of view. As objects in general have to be monitored using many views, techniques are needed to merge individual views. Traditional techniques have physical impact on the surface, which is unacceptable for most CH objects. It is therefore necessary to identify, evaluate and classify available techniques for fusion of views.

2nd WG task st3.2 Integration of multi-sensor data
Optical techniques for CH applications are contactless and carry certain information content, based on the interaction between light and surface. This interaction depends on the wavelength and the sensor used. Thus, information content can be extended by use of different instruments with varying spectral characteristics. A number of integrating steps are required, which have to be categorised and classified.

3rd WG task st3.3 data access and formats
Measured data provide valuable content which should be stored and made available to anyone using it for CH applications. However, due to characteristics introduced by the vendors of instruments or software there exist huge barriers to easy access. This situation has to be addressed and remedied, especially in interdisciplinary and multi-sensoral working fields.

WG 4: Analysis and restoration of CH surfaces and objects

Leader: Dr. Christian Degrigny (CH), vice-leader: Eryk Bunsch (PL)

1st WG task st4.1 Identification, structuring and implementation of typical use cases
Surface analyses based on various optical, physicalor chemical characteristics may serve diverse purposes. Surface characteristics are subject to the interaction with the optical radiation and the process of data capture. It is therefore important for COSCH to identify crucial factors affecting these processes and to establish a reliable knowledge base.

2nd WG task s4.2 Development of guidelines
Similarly, it is important to identify and define the impact of the instrumentation on the quality of results. Critical steps in the analytical process should be identified depending on the purpose of the undertaken analysis.


WG 5: Visualisation of CH objects and its dissemination

Leader: Dr. Selma Rizvić (BA), vice-leader: Dr. Despoina Tsiafaki (HE)

1st WG task st5.1 Identification, planning, implementation and testing of typical applications of visualisation within CH domains
CH objects can be visualised in many different ways and for different purposes. Applications range from edutainment and relatively simple presentation to the general public to accurate 3D records surveyed for specialist professional research and conservation. Each purpose bears on the quality expected from visualisation. Characteristics of the data have to be identified and the visualisation processes structured and implemented accordingly.

2nd WG task st5.2 Further development of visualisation techniques
Development of innovative visualisation techniques including integration of multi-sensor data as base for enhanced exploitation of information pertaining to shape and colour, as well as other object data and metadata.

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