A high sensitivity, low noise and high spatial resolution multi-band infrared reflectography camera for the study of paintings and works on paper

A high sensitivity, low noise and high spatial resolution multi-band infrared reflectography... Background: Infrared reflectography (IRR) remains an important method to visualize underdrawing and composi- tional changes in paintings. Older IRR camera systems are being replaced with near-infrared cameras consisting of room temperature infrared detector arrays made out of indium gallium arsenide (InGaAs) that operate over the spec- tral range of ~900 to 1700 nm. Two camera types are becoming prevalent. The first is staring array infrared cameras having 0.25–1 Megapixels where the camera or painting is moved to acquire tens of individual images that are later mosaicked together to create the infrared reflectogram. The second camera type is scanning back cameras in which a small InGaAs array (linear or area array) is mechanically scanned over a large image formed by the camera lens to cre- ate the reflectogram, typically 16 Megapixels. Both systems have advantages and disadvantages. The staring IR array cameras offer more flexible collection formats, provide live images, and allow for the use of spectral bandpass filters that can provide reflectograms with better contrast in some cases. They do require a mechanical system for mov- ing the camera or the artwork and post-capture image mosaicking. Scanning back cameras eliminate or reduce the amount of mosaicking and movement of http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Heritage Science Springer Journals

A high sensitivity, low noise and high spatial resolution multi-band infrared reflectography camera for the study of paintings and works on paper

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Publisher
Springer International Publishing
Copyright
Copyright © 2017 by The Author(s)
Subject
Materials Science; Materials Science, general
eISSN
2050-7445
D.O.I.
10.1186/s40494-017-0146-1
Publisher site
See Article on Publisher Site

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