Two sessions discussed laboratory generation of turbulence, using classical methods such as optical tomography and holography phase screens, and using nonlinear optics and LCMs. With nonlinear optics, the signal can be represented as function of time, allowing researchers to design and control a wide variety of models and to enable spontaneous recognition of previously unobserved patterns in dynamic regions. New techniques addressing the difficult problem of the complexity of observing and testing artificial turbulence in four dimensions were discussed. The conference on Imaging Spectrometry, chaired by Michael R. Descour of the Optical Sciences Center at the University of Arizona and Sylvia S. Shen of The Aerospace Company assembled experts in hyperspectral sensors and algorithms, and drew speakers from civilian agencies such as NASA and the Department of Energy as well as from defense-related organizations. In addition to being compact, the Offner spectrometer features low slit curvature and spectral keystone.
Hyperspectral data is known to be very redundant.
Researchers from Sandia National Laboratories presented for the first time their development of an imaging spectrometer capable of displaying analyzed images in real time. This instrument, named ISIS, views object-space through reconfigurable spectral filters that can feature positive and negative transmittance values. Imaging Spectrometry chairs expect an even more comprehensive meeting next year in Denver, as imaging spectrometry gains momentum and applications through new sensors and data-exploitation techniques. Jim Harrington serves as the Publications Committee Chair, will serve as the 1999 Secretary, and was inducted as a Fellow this year. Roland Jacobsson is this year's SPIE President.