Abstract

A method has been developed to detect underdrawings in paintings more completely than is possible with ir photography. A modified Barnes ir camera has been used equipped with a lead sulfide detector. The results can be explained in terms of an increase in hiding thickness of paint layers with the wavelength. Practical aspects of reflectography of paintings are briefly described and an example is given.

© 1968 Optical Society of America

Pulsed thermography and infrared reflectography: comparative results for underdrawing visualization in paintings

Jacopo Melada, Marco Gargano, and Nicola Ludwig
Appl. Opt. 61(8) E33-E38 (2022)

Optical Sphere Paint and a Working Standard of Reflectance

F. Grum and G. W. Luckey
Appl. Opt. 7(11) 2289-2294 (1968)

Radiation and Optical Techniques in the Visual Examination of Paintings

Sheldon Keck
Appl. Opt. 8(1) 41-48 (1969)

Sensing the Invisible World

Eric M. Wormser
Appl. Opt. 7(9) 1667-1672 (1968)

Temperature Measurement with an Infrared Microscope

John R. Yoder
Appl. Opt. 7(9) 1791-1796 (1968)