Title :
An Investigation into Temporal Gamma Luminance for Digital Fringe Fourier Transform Profilometers
Author :
Baker, M.J. ; Chicharo, J.F. ; Xi, J.
Author_Institution :
Univ. of Wollongong, Wollongong
Abstract :
Analysis of the impact of temporal gamma luminance on Fourier transform profllometry (FTP) digital video projection (DVP) based structured light profilometers is undertaken. We investigate the spectral harmonic structure for typical DVP fringe images linking projector gamma and 2nd order fringe harmonics. The validity of the presented study is verified through simulation, and subsequently we conclude that for typical projector 7, the 2nd order harmonic is the single most significant contribution to reconstruction error for the phase measuring technique. The impact of our analysis is further gauged by empirical measurement of the temporal variation of gamma of a DVP device.
Keywords :
Fourier transform optics; brightness; face recognition; feature extraction; optical projectors; 2nd order fringe harmonics; digital fringe Fourier transform profilometers; digital video projection; spectral harmonic structure; structured light profilometers; temporal gamma luminance; Cameras; Fourier transforms; Humans; Image reconstruction; Nonlinear optics; Optical interferometry; Optical modulation; Optical sensors; Phase modulation; Telecommunication computing; Digital; FTP; Fringe; Gamma; Harmonics; Non-linear Luminance; Profilometry;
Conference_Titel :
Intelligent Signal Processing, 2007. WISP 2007. IEEE International Symposium on
Conference_Location :
Alcala de Henares
Print_ISBN :
978-1-4244-0829-0
Electronic_ISBN :
978-1-4244-0830-6
DOI :
10.1109/WISP.2007.4447501
