We present the development of advanced neural network and 3D image processing algorithms to identify hand
gestures for a novel Surgeon-Computer-Interface (SCI) in the operating room. Feature extraction methods have
been identified to reliably extract unique attributes and recognize dynamic hand gestures such as "Point and Click"
and "Hand Waiving" features. We show an experimental demonstration of a non-linear neural network classifier
that is capable of reliably recognizing 8 complex hand gesture patterns.
We present an optical system for small animal imaging that can combine various in vivo imaging modalities, including
fluorescence (intensity and lifetime), spectral, and trans-illumination imaging. This system consists of light-tight box
with ultrafast pulsed or cw laser light excitation, motorized translational and rotational stages, a telecentric lens for
detection, and a cooled CCD camera that can be coupled to an ultrafast time-gated intensifier. All components are
modular, making possible laser excitation at various wavelengths and pulse lengths, and signal detection in a variety of
ways (multimode). Results of drug nanoconjugate carrier delivery studies in mice are presented. Conventional and
spectrally-resolved fluorescence images reveal details of in vivo drug nanoconjugate carrier accumulation within the
tumor region and several organs in real time. By multi-spectral image analysis of ex vivo specimens from the same mice,
we were able to evaluate the extent and topology of drug nanoconjugate carrier distribution into specific organs and the
tumor itself.
This paper describes a family of interconnect system based on optical time division multiplexing (OTDM) for use as system area networks (SAN). The low latency and high bisection bandwidth that is attainable with this type of systems is ideally suited for scalable multiprocessor applications. The ability to rapidly switch transmission channels of these OTDM system gives them the logical appearance of a fully connected crossbar switch. However unlike large electronic crossbar switches which are difficult to control, the synchronicity inherent in OTDM allows a class of efficient, distributed arbitration and control algorithms with incremental extension capability. This paper describes the optical and electronic architecture of an OTDM interconnect system and discusses implementation, security and fault tolerance issues.
Conference Committee Involvement (8)
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues X
21 January 2012 | San Francisco, California, United States
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues IX
22 January 2011 | San Francisco, California, United States
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues VIII
23 January 2010 | San Francisco, California, United States
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues VII
26 January 2009 | San Jose, California, United States
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues VI
21 January 2008 | San Jose, California, United States
Imaging, Manipulation and Analysis of Biomolecules, Cells, and Tissues V
22 January 2007 | San Jose, California, United States
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues IV
23 January 2006 | San Jose, California, United States
Imaging, Manipulation, and Analysis of Biomolecules, Cells, and Tissues II
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