Structure distinguishes of hybrid systems for unknown signals detection will lead us to the differences in efficiency and time it takes to process unknown signals detection. Because of this it is important to develop ...
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ISBN:
(纸本)0819423750
Structure distinguishes of hybrid systems for unknown signals detection will lead us to the differences in efficiency and time it takes to process unknown signals detection. Because of this it is important to develop an approach, that allows to compare fast processing system's properties designated for a fixed value of detection's dependability. This is the subject under consideration bellow.
The method of neural network image recognition with forming of feature vector on base second order histograms is considerd. Simulation results of process recognition are presented for binaruy contour images, and image...
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ISBN:
(纸本)0819423750
The method of neural network image recognition with forming of feature vector on base second order histograms is considerd. Simulation results of process recognition are presented for binaruy contour images, and images represented in codes of local anisotropic features.
In the development of advanced informationsystems, such as parallelprocessing computers and asynchronous transfer mode (ATM) switching systems, the speed and capacity of board-mountable processors and switches will i...
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ISBN:
(纸本)0818675918
In the development of advanced informationsystems, such as parallelprocessing computers and asynchronous transfer mode (ATM) switching systems, the speed and capacity of board-mountable processors and switches will increase considerably through advances in VLSI technology. However, bottlenecks are likely to occur in the interconnections due to the limitations of electric wiring. Parallel optical interconnections will not only be instrumental in avoiding such a bottleneck, but will also allow the designer to create innovative systems featuring broadband and high-density networks. VCSELs and smart pixel arrays are the key devices for constructing parallel optical interconnection systems, such as parallel optical fiber link and free-space optical interconnects, because they can simultaneously emit, switch and process a large number of broadband optical signals with little power consumption. In this paper, parallel optical interconnection technologies based on VCSELs and smart pixels are reviewed, and the device and system application issues related to parallel processing computers and ATM switching nodes are discussed.
The method of coding of input binary data based on their transformation to binary-sign-bit notation data by special algorithm is proposed. The method enables to eliminate through carries and reduce difference in times...
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ISBN:
(纸本)0819423750
The method of coding of input binary data based on their transformation to binary-sign-bit notation data by special algorithm is proposed. The method enables to eliminate through carries and reduce difference in times of fulfilment of various arithmetic operations thereby increasing considerably the speed of calculations in optoelectronic digital computing systems.
This paper deals with the extension of information theory to the assessment of visual communication from scene to observer. The mathematical development rigorously unites the electro-optical design of image gathering ...
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This paper deals with the extension of information theory to the assessment of visual communication from scene to observer. The mathematical development rigorously unites the electro-optical design of image gathering and display devices with the digital processingalgorithms for image coding and restoration. Results show that: End-to-end system analysis closely correlates with measurable and perceptual performance characteristics, such as data rate and image quality, respectively. The goal of producing the best possible image at the lowest data rate can be realized only if (a) the electro-optical design of the image-gathering device is optimized for the maximum-realizable information rate and (b) the image-restoration algorithm properly accounts for the perturbations in the visual communication channel.
Shape recognition is necessary in a broad band of applications such as traffic sign or work piece recognition. It requires not only neighborhood processing of the input image pixels but global interconnection of them....
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ISBN:
(纸本)0819422363
Shape recognition is necessary in a broad band of applications such as traffic sign or work piece recognition. It requires not only neighborhood processing of the input image pixels but global interconnection of them. The Hough transform (HT) performs such a global operation and it is well suited in the preprocessing stage of a shape recognition system. Translation invariant features can be easily calculated from the Hough domain. We have implemented on the computer a neural network shape recognition system(1) which contains a HT, a feature extraction, and a classification layer. The advantage of this approach is that the total system can be optimized with well-known learning techniques and that it can explore the parallelism of the algorithms. However, the HT is a time consuming operation. Parallel, opticalprocessing is therefore advantageous. Several systems have been proposed, based on space multiplexing with arrays of holograms(2) and CGH's(3) or time multiplexing with acousto-optic processors(4) or by image rotation with incoherent(5) and coherent astigmatic optical processors(6). We took up the last mentioned approach because 2-dimensional array detectors are read out line by line, so a 1-d detector can achieve the same speed and is easier to implement. Coherent processing can allow the implementation of filters in the frequency domain. Features based on wedge/ring, Gabor, or wavelet filters have been proven to show good discrimination capabilities for texture and shape recognition. The astigmatic lens system which is derived from the mathematical formulation of the HT is long (4f) and contains a non-standard, astigmatic element. By methods of lens transformations for coherent applications we map the original design to a shorter lens (8/3f) with a smaller number of well separated standard elements (spherical and cylindrical of-the-shelf elements) and with the same coherent system response. The final lens design still contains the frequency plane for filtering
A coherent optical meted of blood cell parameters reseach was considered. It is shown theoreticaly that average statistical parameters and form features of the cells and its nuclei can be determined from spatial-frequ...
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ISBN:
(纸本)0819423750
A coherent optical meted of blood cell parameters reseach was considered. It is shown theoreticaly that average statistical parameters and form features of the cells and its nuclei can be determined from spatial-frequency spectrum analysis. The experimental results of hemoglobin concentration definition and cell count by a laser blood analyzer model is given.
This paper focuses on the digitization and networking of medical image information used within and among hospitals. We have targeted image information that demands the highest level of quality (radiological and pathol...
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ISBN:
(纸本)0780333365;0780333373
This paper focuses on the digitization and networking of medical image information used within and among hospitals. We have targeted image information that demands the highest level of quality (radiological and pathological images) for application in medical diagnosis using Super High Definition (SHD) images, whose resolution is more than 2000 x 2000 pixels. To prove its quality and effectiveness, SHD image stations and a digital microscope are developed, and connected to ATM network. With this networked SHD image system, all functions requested for medical information is really evaluated including, processingalgorithms, coding algorithms, and transmission protocol.
This work describes the architecture and algorithms used in the computer-aided design-tool developed for the automatic layout of integrated-optic, time-of-flight circuit designs. As in VLSI circuit layout, total wire ...
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ISBN:
(纸本)0819422363
This work describes the architecture and algorithms used in the computer-aided design-tool developed for the automatic layout of integrated-optic, time-of-flight circuit designs. As in VLSI circuit layout, total wire length and chip area minimization are the goals in the layout of time-of-flight circuits. However, there are two major differences between the layout of time of flight circuits and VLSI circuits. First, the interconnection lengths of time-of-flight designs are exactly specified in order to achieve the necessary delays for signal synchronization. Secondly, the switching elements are 120 times longer than they are wide. This highly astigmatic aspect ratio causes severe constraints on how and where the switches are placed. Assuming the continued development of corner turning mirrors allows the use of a parallel, row-based device placement architecture and a rectangular, fixed-grid track system for the connecting paths. The layout process proceeds in two steps. The first step involves the use of a partial circuit graph representation to place the elements in rows, oriented in the direction of the signal flow. After iterative improvement of the placement, the second step proceeds with the routing of the connecting, paths. The main problem in the automatic layout of time-of-flight circuits is achieving the correct path lengths without overlapping previously routed paths. This problem is solved by taking advantage of a certain degree of variability present in each path, allowing the use of simple heuristics to circumvent previously routed paths.
Use of remotely sensed imagery to map lines of communication or revise existing maps is currently a labor-intensive process. In this paper, we present a system for automatically extracting lines of communication from ...
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ISBN:
(纸本)0819421391
Use of remotely sensed imagery to map lines of communication or revise existing maps is currently a labor-intensive process. In this paper, we present a system for automatically extracting lines of communication from high- resolution (less than 5-meter spatial resolution) multispectral imagery. Positive systems ADAR 5500 imagery is used to demonstrate system functionality. Our system includes automatic detection and identification algorithms, a geospatial database for storage and retrieval of results, a change detection component that compares newly detected lines of communication against stored database information, and a user interface that allows operator review and editing of automatically extracted results.
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