Associative processing based on content-addressable memories has been argued to be the natural solution for non-numerical informationprocessing applications. Unfortunately, the implementation requirements of these ar...
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An approach for the implementation of the Radial Basis Function (RBF) technique is presented and applied to a networlf of the appropriate architecture. The paper explores the extent to which the number of RBF nodes ca...
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Summary form only given. As a consequence of improving technology, a new class of applications is emerging, characterized by intense demands on communications, computation, and data storage. BBFS is a broadband filesy...
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Summary form only given. As a consequence of improving technology, a new class of applications is emerging, characterized by intense demands on communications, computation, and data storage. BBFS is a broadband filesystem effort to explore ways of supporting these applications. A goal of BBFS is to simplify applications by absorbing data-intensive processing into the filesystem. To obtain behavioral extensibility, BBFS provides the notion of file types that encapsulate data structures and behaviors, such as structured files, version history files, spanned files that cross device boundaries, mirrored files, and active files containing data with associated functions.< >
We propose a digital optical arithmetic processor design based on symbolic substitution using holographic matched and space-invariant filters. The proposed system performs Boolean logic, binary addition, and subtracti...
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We propose a digital optical arithmetic processor design based on symbolic substitution using holographic matched and space-invariant filters. The proposed system performs Boolean logic, binary addition, and subtraction in a highly parallel manner; i.e., the processing time depends on word size but not array size. algorithms for performing binary addition and subtraction in parallel are presented. A skew problem occurring when symbolic substitution is applied to binary addition and subtraction with space-invariant systems is addressed, and its solution is suggested. Crosstalk in symbolic substitution is described, and new symbols which can prevent the crosstalk are introduced. System analysis and fundamental limitations of the proposed system are also presented in terms of processing time, overall light efficiency, and the maximum array size of the input data plane. The performance of the proposed system with that of the current electronic supercomputers has been compared by combining information about the processing time and maximum array size.
Nonlinear optical devices such as electrically controlled optical switches, optically controlled optical switches, and optical bistable devices will be key devices for switching applications in future optical communic...
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Nonlinear optical devices such as electrically controlled optical switches, optically controlled optical switches, and optical bistable devices will be key devices for switching applications in future optical communication and informationprocessingsystems. Recent developments in LiNbO3 and semiconductor superlattice modulators and switches, etalon-type optical bistable devices, and ultrafast switches made of glass fibers and organic nonlinear optical materials are described.
This conference proceedings contains 41 papers arranged in five sections. Section 1 reviews ongoing research in opticalprocessing including recent results in optical correlator, optical computer photorefractive, and ...
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ISBN:
(纸本)0819403474
This conference proceedings contains 41 papers arranged in five sections. Section 1 reviews ongoing research in opticalprocessing including recent results in optical correlator, optical computer photorefractive, and spatial light-modulating device research. Section 2 deals with new developments in filter design, particularly phase-only filters and experimental filter implementations. Section 3, covering opticalprocessing is devoted primarily to new developments in 2D-optical signal processingsystems for spectral analysis and range/doppler signal processing. Section 4 concerns acousto-optic spectrum analyzer systems and components. Section 5 deals with optical computing and presents various algorithms and architectures for computing.
A method for comparing reconstruction algorithms is presented based on the ability to perform certain detection tasks on the resulting images. The reconstruction algorithms compared are the algebraic reconstruction te...
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ISBN:
(纸本)0819402753
A method for comparing reconstruction algorithms is presented based on the ability to perform certain
detection tasks on the resulting images. The reconstruction algorithms compared are the algebraic
reconstruction technique (ART) and the maximum entropy reconstruction method (MaxEnt). Task
performance is assessed through a Monte Carlo simulation of the complete imaging process, including the
generation of a set of object scenes, followed by data-taking, reconstruction, and performance of the
specified task by a machine observer. For these detection tasks the figure of merit used for comparison is
the detectability index, d'. When each algorithm is run with approximately optimized parameters, these
studies find comparable values for d'.
The proceedings contains 276 papers. The papers are grouped under following section headings: new devices in the fields of optoelectronics, electrooptics, acoustooptics, magnetooptics, specialized modulators and their...
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ISBN:
(纸本)0819402737
The proceedings contains 276 papers. The papers are grouped under following section headings: new devices in the fields of optoelectronics, electrooptics, acoustooptics, magnetooptics, specialized modulators and their integrations;optoelectronic intelligent sensors;optoelectronic tests, analysis, measurement, and control;laser devices and their applications;infrared optics, low-level light technology, and applications;fiber optic devices and applications;photovoltaic technology and solar energy systems;hybrid system for image processing;optical disk information storage and retrieval;optical bistability and optical computing;pattern recognition and robot vision;and artificial intelligence of optical equipment.
A novel quantized learning rule with unipolar binary weights which is useful to simplify the artificial neural hardware is reported. An input-dependent thresholding operation is also proposed to remove the unwanted ef...
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A novel quantized learning rule with unipolar binary weights which is useful to simplify the artificial neural hardware is reported. An input-dependent thresholding operation is also proposed to remove the unwanted effect due to insufficient contrast ratio of spatial light modulations as a synaptic connection device. The recognition of 26 characters of the alphabet by the single set of an optoelectronic three-layered network was demonstrated experimentally
This conference proceedings contains 24 papers on new Techniques for the improved interpretation (interactive and automated) of biomedical images obtained from practical imaging systems. The papers detail methods for ...
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ISBN:
(纸本)0819402923
This conference proceedings contains 24 papers on new Techniques for the improved interpretation (interactive and automated) of biomedical images obtained from practical imaging systems. The papers detail methods for reconstructing images from partial information, for correcting image defects, and for analyzing practical biomedical images. The first section of this volume focuses on the imaging and analysis of microscopic objects in three dimensions. Several papers detail innovative new microscope technologies for overcoming the limitations of conventional sensors. Others describe machine-vision techniques for interpreting the objects imaged. The next group of papers addresses the generation and reconstruction of images derived from both widely used and recently developed radiation imaging devices including tomography, MRI, x-rays, and IR absorption techniques. The third group deals with image enhancement, segmentation and feature extraction, while the final group is concerned with image analysis and interpretation.
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