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Articles 1 - 6 of 6
Full-Text Articles in Engineering
Printer Modeling For Document Imaging, Margaret Norris, Elisa H. Barney Smith
Printer Modeling For Document Imaging, Margaret Norris, Elisa H. Barney Smith
Electrical and Computer Engineering Faculty Publications and Presentations
The microscopic details of printing often are unnoticed by humans, but can make differences that affect machine recognition of printed text. Models of the defects introduced into images by printing can be used to improve machine recognition. A probabilistic model used to generate images showing toner placement bears similarities to actual printed images. An equation derived for the average coverage of paper by toner particles having probabilistic placement is developed using geometric probability. Simulations show that averages of ‘printed images’ do have the same average coverage as the derived average coverage equations.
Reports Of The Das02 Working Groups, Elisa Barney Smith, David Monn, Harsha Veeramachaneni, Koichi Kise, Alessio Malizia, Leon Todoran, Adnan El-Nasan, Rolf Ingold
Reports Of The Das02 Working Groups, Elisa Barney Smith, David Monn, Harsha Veeramachaneni, Koichi Kise, Alessio Malizia, Leon Todoran, Adnan El-Nasan, Rolf Ingold
Electrical and Computer Engineering Faculty Publications and Presentations
This document is a collection of four working group reports in the areas of digital libraries, document image retrieval, layout analysis, and Web document analysis. These reports were the outcome of discussions by participants at the Fifth IAPR International Workshop on Document Analysis Systems held in Princeton, NJ on 19-21 August 2002.
Statistical Image Differences, Degradation Features, And Character Distance Metrics, Elisa Barney Smith, Xiaohui Qiu
Statistical Image Differences, Degradation Features, And Character Distance Metrics, Elisa Barney Smith, Xiaohui Qiu
Electrical and Computer Engineering Faculty Publications and Presentations
Document image quality is degraded through processes such as scanning, printing, and photocopying. The resulting bilevel image degradations can be categorized based either on observable degradation features or on degradation model parameters. The image degradation features can be related mathematically to model parameters. In this paper we statistically compare pairs of populations of degraded character images created with different model parameters. The probability that the character populations were degraded by the same model parameters correlates with the relationship between observable degradation features and the model parameters. Two metrics of character difference are used: Hamming distance and moment feature distance. Knowledge …
Interaction Effects Of Slurry Chemistry On Chemical Mechanical Planarization Of Electroplated Copper, Peter A. Miranda, Jerome A. Imonigie, Amy J. Moll
Interaction Effects Of Slurry Chemistry On Chemical Mechanical Planarization Of Electroplated Copper, Peter A. Miranda, Jerome A. Imonigie, Amy J. Moll
Electrical and Computer Engineering Faculty Publications and Presentations
Recent studies have been conducted investigating the effects of slurry chemistry on the copper CMP process. Slurry pH and hydrogen peroxide concentration are two important variables that must be carefully formulated in order to achieve desired removal rates and uniformity. In applications such as throughwafer vertical interconnects, slurry chemistry effects must be thoroughly understood when copper plating thicknesses can measure up to 20 microns thick. The species of copper present on the surface of the wafer can be controlled through formulation of the slurry chemistry resulting in minimizing non-uniformity while aggressively removing copper. Using a design of experiments (DOE) approach, …
An Asynchronous Gals Interface With Applications, Jennifer A. Smith
An Asynchronous Gals Interface With Applications, Jennifer A. Smith
Electrical and Computer Engineering Faculty Publications and Presentations
A low-latency asynchronous interface for use in globally-asynchronous locally-synchronous (GALS) integrated circuits is presented. The interface is compact and does not alter the local clocks of the interfaced local clock domains in any way (unlike many existing GALS interfaces). Two applications of the interface to GALS systems are shown. The first is a single-chip shared-memory multiprocessor for generic supercomputing use. The second is an application-specific coprocessor for hardware acceleration of the Smith-Waterman algorithm. This is a bioinformatics algorithm used for sequence alignment (similarity searching) between DNA or amino acid (protein) sequences and sequence databases such as the recently completed human …
Protein Family Classification Using Structural And Sequence Information, Jennifer A. Smith
Protein Family Classification Using Structural And Sequence Information, Jennifer A. Smith
Electrical and Computer Engineering Faculty Publications and Presentations
Protein family classification usually relies on sequence information (as in the case of hidden Markov models and position-specific scoring matrices) or on structural information where some sort of average positional error between the atomic locations is used. The positional error method requires that the structure of all the proteins to be classified is known. Sequence methods have the advantage that a much larger number of proteins can be classified (since far more sequences are know than structures). However, sequence methods discard a large amount of useful information contained in the structures of the subset of proteins in the family for …