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Physical Sciences and Mathematics

University of Nebraska - Lincoln

School of Computing: Faculty Publications

1997

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Optical Components For Wdm Lightwave Networks, Michael S. Borella, Jason P. Jue, Dhritiman Banerjee, Byrav Ramamurthy, Biswanath Mukherjee Aug 1997

Optical Components For Wdm Lightwave Networks, Michael S. Borella, Jason P. Jue, Dhritiman Banerjee, Byrav Ramamurthy, Biswanath Mukherjee

School of Computing: Faculty Publications

Recently, there has been growing interest in developing optical fiber networks to support the increasing bandwidth demands of multimedia applications, such as video conferencing and World Wide Web browsing. One technique for accessing the huge bandwidth available in an optical fiber is wavelength-division multiplexing (WDM). Under WDM, the optical fiber bandwidth is divided into a number of nonoverlapping wavelength bands, each of which may be accessed at peak electronic rates by an end user. By utilizing WDM in optical networks, we can achieve link capacities on the order of 50 THz. The success of WDM networks depends heavily on the …


A System For Recognizing A Large Class Of Engineering Drawings, Yuhong Yu, Ashok Samal, Sharad C. Seth Jan 1997

A System For Recognizing A Large Class Of Engineering Drawings, Yuhong Yu, Ashok Samal, Sharad C. Seth

School of Computing: Faculty Publications

We present a system for recognizing a large class of engineering drawings characterized by alternating instances of symbols and connection lines. The class includes domains such as flowcharts, logic and electrical circuits, and chemical plant diagrams. The output of the system, a netlist identifying the symbol types and interconnections, may be used for design simulation or as a compact portable representation of the drawing. The automatic recognition task is divided into two stages: 1) Domain-independent rules are used to segment symbols from connection lines in the drawing image that has been thinned, vectorized, and preprocessed in routine ways. 2) A …