@Article{icces.2011.019.107,
AUTHOR = {Yukitoshi  OTANI, Fumio  KOBAYASHI, Yasuhiro  MIZUTANI,  Manabu Harada, Toru  YOSHIZAWA},
TITLE = {Uni-axial 3-D shape measurement by liquid crystal digital shifter},
JOURNAL = {The International Conference on Computational \& Experimental Engineering and Sciences},
VOLUME = {19},
YEAR = {2011},
NUMBER = {4},
PAGES = {107--108},
URL = {http://www.techscience.com/icces/v19n4/33239},
ISSN = {1933-2815},
ABSTRACT = {A uni-axial three dimensional surface measurement by a liquid crystal digital shifter( LCDC) is proposed using a telecentric optical system. Distance information can be determined by measuring the contrast in the projected grating pattern. The magnification of the object image captured by a CCD camera is adjusted constant by changing the focus distance. A shadow less measurement of the object's area is archived by using a uni-axial system. The liquid crystal digital shifter is a powerful tool to make arbitrary intensity and frequency distribution. Surface profiles of some mechanical parts were measured to demonstrate this method.},
DOI = {10.3970/icces.2011.019.107}
}