WorldCat Identities

University of Maryland, College Park Computer Science Center

Overview
Works: 385 works in 421 publications in 1 language and 1,091 library holdings
Genres: Conference papers and proceedings 
Classifications: QA374, 515.62
Publication Timeline
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Most widely held works about University of Maryland, College Park
 
Most widely held works by University of Maryland, College Park
Numerical solution of partial differential equations; [proceedings] by Symposium on the Numerical Solution of Partial Differential Equations( )

in English and held by 234 WorldCat member libraries worldwide

Public policy and planning for nurse education and practice : a report for governmental officials by Eleanor G Feldbaum( Book )

1 edition published in 1980 in English and held by 11 WorldCat member libraries worldwide

Technical report by College Park University of Maryland( )

in English and held by 10 WorldCat member libraries worldwide

Picture processing : 1973 by Azriel Rosenfeld( Book )

4 editions published between 1974 and 1977 in English and held by 6 WorldCat member libraries worldwide

This paper reviews the fundamentals of automatic picture processing and scene analysis. It discusses computer-based methods of segmenting pictures into meaningful parts; determining properties of the parts and relationships among the parts; and using this information to construct descriptions of the pictures. The material is organized by principal areas of application, including document reading, high-energy physics, cytology, radiology, and remote sensing of the environment
The PAX user's manual by Emilie G Johnston( Book )

2 editions published in 1972 in English and held by 5 WorldCat member libraries worldwide

The report contains a description of the PAX picture processing software, formatted to be used as a user's manual. It contains a complete description of all subroutines, and instructions for usage on all computers for which PAX is currently implemented. (Author)
Analysis of data processing systems by Jack Minker( Book )

1 edition published in 1969 in English and held by 5 WorldCat member libraries worldwide

Some basic edge detection techniques( Book )

2 editions published in 1973 in English and held by 5 WorldCat member libraries worldwide

The report documents a collection of basic techniques for extracting edges of objects. Included are several varieties of gradient operations; the Laplacian; high-pass spatial frequency filtering; and gray level contouring. Examples of the results obtained using these programs are given. (Author)
An approach to selection of wind tracers from tropical maritime geosynchronous satellite cloud imagery by JoAnn Parikh( Book )

1 edition published in 1976 in English and held by 4 WorldCat member libraries worldwide

Manual and automatic procedures for obtaining wind estimates from geosynchronous, dual-channel satellite cloud imagery are reviewed as background material for a proposed automatic system of extracting upper-level wind estimates from tropical maritime regions containing cirrus and low-level clouds. The manual procedures for satellite photointerpretation are subdivided into two stages: (1) determination of cloud genus based on textural and tonal characteristics and on known relationships between synoptic and cloud features, and (2) selection of cloud targets based on cloud genus, reliability of emissivity estimate for the target, and conformity of motion with advective mechanisms. A summary of the automatic operational system of NESS for low-level wind estimation and its extension to upper-level wind estimation is presented. A model for obtaining upper-level wind estimates is proposed
Picture processing : 1979 by Azriel Rosenfeld( Book )

3 editions published between 1975 and 1980 in English and held by 4 WorldCat member libraries worldwide

Developments in the field of picture processing by computer during 1974 are surveyed, and a bibliography of nearly 350 references is given. The topics covered include picture compression; image enhancement and reconstruction; picture matching, edge and curve detection; picture processing implementations; pictorial pattern recognition; picture properties; picture parts and picture description; picture automata and grammars
Some new image smoothing techniques by Ann Scher( Book )

1 edition published in 1979 in English and held by 4 WorldCat member libraries worldwide

This report documents a collection of new techniques for image smoothing, and gives examples of their performance. The techniques involve averaging over half-neighborhoods, weighted averaging, and averaging based on local property probabilities. (Author)
On limit properties in digitization schemes by U Montanari( Book )

2 editions published in 1969 in English and held by 4 WorldCat member libraries worldwide

Continuity of curve digitizations is considered, and it is pointed out that no proposed digitization scheme satisfies continuity requirements. A general definition of digitization scheme is given, having those in the literature as special cases, and it is proved that for practical purposes, no digitization scheme is possible, in which limit curves always have unambiguous digitizations. A weaker definition of continuity is then given, and this property is proved to hold for a large class of digitization schemes. These concepts apply when a curve with some extremal property must be reconstructed from the digitization. The cases of a least perimeter polygon and of a least energy rod are considered in detail. In the first case, necessary and sufficient conditions are developed that assure a one-to-one correspondence between the given digitization and the minimal polygon. The convergence of an algorithm for finding the minimal polygon, is proved in the convex case. (Author)
Toward the recognition of buildings and roads on aerial photographs by Manouche Tavakoli( Book )

1 edition published in 1980 in English and held by 4 WorldCat member libraries worldwide

This paper describes steps toward the recognition of cultural features such as buildings and roads on aerial photographs. The approach involves several successive stages of grouping of edge segments. Straight line segments are fitted to sets of edge pixels; compatibilities between pairs of these segments, based on gray level and geometric information, are computed; and the segments are then grouped into building-like and road-like groupings based on these compatibilities. Examples of the results obtained using this approach are given, and some variations on the initial stages of the process are also investigated
Application of hierarchical data structures to geographical information systems by Hanan Samet( Book )

2 editions published between 1982 and 1983 in English and held by 4 WorldCat member libraries worldwide

The purposes of this investigation were twofold: (1) to construct a geographic information system based on the quadtree hierarchical data structure, and (2) to gather statistics to allow the evaluation of the usefulness of this approach to geographic information system organization. To accomplish the above objectives, in Phase I of the project a database was built that contained three maps supplied under the terms of the contract. These maps described the flood plain, elevation contours, and language classes of a region in California. The map regions were represented in quadtree form, and algorithms were developed for basic operations on quadtree-represented regions (set-theoretic operations, point-in-region determination, region property computation, and submap generation). The efficiency of these algorithms was studied theoretically and experimentally. On Phase II of the project, the following additional tasks were performed: (a) Query Language Design; (b) Database updating; (c) Point and linear feature data construction
Impact of the cybernetic law of requisite variety on a theory of information science by Laurence B Heilprin( Book )

1 edition published in 1973 in English and held by 4 WorldCat member libraries worldwide

A note on the use of second-order gray level statistics for threshold selection by Narendra Ahuja( Book )

2 editions published in 1977 in English and held by 4 WorldCat member libraries worldwide

The gray level histogram of an image is commonly used as an aid in selecting thresholds for segmenting the image. Various methods have been proposed to make threshold selection easier. This note describes a class of such methods that make use of second-order gray level statistics to define improved histograms. (Author)
Web grammars by John L Pfaltz( Book )

2 editions published in 1969 in English and held by 3 WorldCat member libraries worldwide

Classes of 'phrase-structure grammars' are defined whose 'languages' consist, not of strings of symbols, but of directed graphs with symbols at their vertices ('webs'). Examples of such 'web grammars' are given, having languages consisting of trees, of two-terminal series-parallel networks, and of 'triangular' networks. It is shown that if the graphs permitted in a 'context-sensitive' web grammar are required to be acyclic, and the parsing rules are assumed to be graph homomorphisms, then any subgraph which is parsed by a rule must be 'convex', and any rule is a composite of rules each of which parses a subgraph having just two points. (Author)
Texture classification with change point statistics by Stanley Martin Dunn( Book )

1 edition published in 1981 in English and held by 3 WorldCat member libraries worldwide

Although the problem of texture classification has been thoroughly studied, it is still desirable to investigate whether or not we can model the random behavior of the imaging equipment and still achieve a reliable classification scheme. To this end, we introduce a statistical test previously used to determine whether or not a sequence of random variables has a change point
Three-dimensional digital line segments by C. E Kim( Book )

1 edition published in 1981 in English and held by 3 WorldCat member libraries worldwide

Digital arcs in 3D digital pictures are defined. The digital image of an arc is also defined. A digital arc is defined to be a digital line segment if it is the digital image of a line segment. It is shown that a digital line segment may be characterized by the chord property holding for its projections onto the coordinate planes. It is also shown that a digital line segment may not be characterized by its own chord property. A linear time algorithm is presented that determines whether or not a digital arc is a digital line segment. (Author)
Physics and engineering laboratory Fortran image processing system documentation manual by M. J McDonnell( Book )

1 edition published in 1980 in English and held by 3 WorldCat member libraries worldwide

 
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Alternative Names

controlled identityUniversity of Maryland at College Park. Computer Science Center

Maryland. University. Computer Science Center

Languages
English (33)