Cunwei Lu Seiji Inokuchi An Absolute Depth Range Measurement of 3-D Objects Based on Modulation Moiré Topography. 1754-1757 2000 ICPR http://csdl.computer.org/comp/proceedings/icpr/2000/0750/01/07501754abs.htm db/conf/icpr/icpr2000-1.html#LuI00