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High resolution colorimetric imaging of paintings

Record type: Conference or Workshop Item (Paper)

With the aim of providing a digital electronic replacement for conventional photography of paintings, a scanner has been constructed based on a 3000x2300 pel resolution camera which is moved precisely over a 1 metre square area. Successive patches are assembled to form a mosaic which covers the whole area at c. 20 pels/mm resolution, which is sufficient to resolve the surface texture, particularly craquelure. To provide high colour accuracy, a set of seven broad-band interference filters are used to cover the visible spectrum. A calibration procedure based upon a least-mean-squares fit to the colour of patches from a Macbeth Colorchecker chart yields an average colour accuracy of better than 3 units in the CMC uniform colour space. This work was mainly carried within the VASARI and MARC projects, funded by the European Commission's ESPRIT programme, involving companies and galleries from around Europe. The system is being used to record images for conservation research, for archival purposes and to assist in computer-aided learning in the field of art history. The paper will describe the overall hardware and software design. The theoretical basis for the colour calibration methodology is described. The mosaic assembly procedure and some of the associated image processing routines developed are described. Preliminary results from the research will be presented.

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Citation

Martinez, K., Cupitt, J. and Saunders, D. (1993) High resolution colorimetric imaging of paintings At SPIE Cameras, Scanners and Image Acquisition Systems. , pp. 25-36.

More information

Published date: February 1993
Additional Information: Organisation: SPIE
Venue - Dates: SPIE Cameras, Scanners and Image Acquisition Systems, 1993-02-01
Keywords: imaging, colorimetric art
Organisations: Web & Internet Science

Identifiers

Local EPrints ID: 250683
URI: http://eprints.soton.ac.uk/id/eprint/250683
ISBN: 0-8194-1134-5
PURE UUID: f982fb6e-2554-4101-9a43-93a402a686c3
ORCID for K. Martinez: ORCID iD orcid.org/0000-0003-3859-5700

Catalogue record

Date deposited: 16 Aug 1999
Last modified: 18 Jul 2017 10:40

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Contributors

Author: K. Martinez ORCID iD
Author: J. Cupitt
Author: D. Saunders

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