RT Journal Article
T1 High dynamic range imaging method for interferometry
A1 Quiroga Mellado, Juan Antonio
A1 Vargas Balbuena, Javier
A1 Restrepo, R.
A1 Belenguer Dávila, Tomás
AB We demonstrate a method to easily and quickly extend the dynamic range imaging capabilities of the camera in a typical interferometric approach. The camera dynamic range is usually low and limited to 256 gray levels. Also, it is well known that one may have over or under-exposed regions in the interferogram (due to non-uniform illumination) which makes these image regions not reliable. In our proposed method it is not necessary to obtain or use the non-linear camera response curve in order to extend the camera dynamic range. We obtain a sequence of differently exposed interferograms, typically five or six; after that, we compute the corresponding normalized fringe patterns and modulation maps using a typical normalization method. These normalized patterns are combined through a temporal weighted average using as weights the corresponding modulation maps. We show a set of experimental results that prove the effectiveness of the proposed method.
PB Elsevier Science B. V.
SN 0030-4018
YR 2011
FD 2011-08-15
LK https://hdl.handle.net/20.500.14352/43913
UL https://hdl.handle.net/20.500.14352/43913
LA eng
NO [1] D. Malacara, M. Servín, Z. Malacara, Interferogram Analysis for Optical Testing, Marcel Dekker Inc, 1998.[2] P.E. Debevec, J. Malik, Recovering high dynamic range radiance maps from photographs, SIGGRAPH, 97, 1997, p. 369.[3] J. Vargas, J.A. Quiroga, T. Koninckx, L. Van Gool, Opt. Eng 47 (5) (2008).[4] J. Vargas, L. González-Fernandez, J. Antonio Quiroga, T. Belenguer, Appl. Opt. 49 (2010) 2409.[5] Roger M. Groves, Pedrini Giancarlo, Osten Wolfgang, Appl. Opt. 47 (2008) 5550.[6] J.A. Quiroga, M. Servín, Opt. Commun. 224 (2003) 221.[7] B. Strobel, Appl. Opt. 35 (13) (1996) 2192.[8] http://goo.gl/4y1Ql.
NO © 2011 Elsevier Science B. V.
DS Docta Complutense
RD 23 jul 2024