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

fYear

2007

fDate

3-5 Oct. 2007

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/WISP.2007.4447501

Filename

4447501