Showing papers in "Journal of the Optical Society of America in 1992"
Journal Article•
TL;DR: In this article, the spectrum of 130Te2 in the range 4712-5020 A was observed using Doppler-free frequency-modulation spectroscopy, and the wave numbers of 32 selected lines were measured interferometrically with an accuracy of 2.2 parts in 109.
Abstract: We have observed the spectrum of 130Te2 in the range 4712–5020 A by using Doppler-free frequency-modulation spectroscopy. The wave numbers of 32 selected lines have been measured interferometrically with an accuracy of 2.2 parts in 109. These measurements provide a well-distributed set of precise reference lines for this region. Good agreement is found with four lines that were previously measured in other laboratories for use as transfer standards in the spectroscopy of hydrogen, deuterium, positronium, and muonium.
31 citations
Journal Article•
TL;DR: An algorithm based on a method for determining the orientation of an object from its two-dimensional projections is developed that could be suitable for incorporation into a robot’s vision system.
Abstract: The determination of a three-dimensional object’s shape and orientation from its silhouettes is studied on the understanding that no a priori information about the object is known. The result of this study is an algorithm that could be suitable for incorporation into a robot’s vision system. The algorithm is based on a method for determining the orientation of an object from its two-dimensional projections. To overcome the reduced information of the silhouettes compared with that of two-dimensional projections, a self-consistency check is introduced. Numerical implementations of the algorithm confirm that it can generate usefully accurate estimates of the orientations and the shapes of technologically nontrivial objects.
2 citations