in this study, the possibility of estimating wheat density was investigated by using a non-destructive method of output voltage of the light received by the photovoltaic cells. for the static tests, treatments and procedures, a system was designed and built. an experiment with different density on the wheat crop was carried out. the components of optical system clouding: photocells, led lights ...

2 0740-7475/06/$20.00 © 2006 IEEE Copublished by the IEEE CS and the IEEE CASS IEEE Design & Test of Computers WITH DECREASING FEATURE SIZE and increasing chip densities, the classical mechanical probe approach for internal fault detection and functional testing faces increasing challenges. Mechanical probes have limitations because of their relatively large size and inherent parasitic effects....

The measurement accuracy of an interferometric optical test is generally limited by the environment. This paper discusses two single-shot interferometric techniques for reducing the sensitivity of an optical test to vibration; simultaneous phase-shifting interferometry and spatial carrier interferometry. ©2004 Optical Society of America OCIS codes: (120.0120) Instrumentation, measurement and me...