| AN APPLICATION OF CLUSTER DETECTION TO TEXT AND PICTURE PROCESSING. |
JUN 1968 |
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| Authors:
Azriel Rosenfeld; Han K. Huang; Victor H. Schneider; MARYLAND UNIV COLLEGE PARK COMPUTER SCIENCE CENTER
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 | 'Syntactic' information about a corpus of linguistic or pictorial data can be 'discovered' by analyzing the statistics of the data. Given a corpus of text, one can measure the tendencies of pairs of words to occur in common contexts, and use these measurements to define clusters of words. Applied to Basic English text, this procedure yields clusters which correspond very closely to the traditional 'parts of speech' (nouns, verbs, articles, ... |
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| PICTURE PROCESSING BY COMPUTER. |
JUN 1968 |
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| Authors:
Azriel Rosenfeld; MARYLAND UNIV COLLEGE PARK COMPUTER SCIENCE CENTER
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| The field of picture processing by computer is reviewed from a technique-oriented standpoint. Only the processing of given pictures (as opposed to computer-synthesized pictures) is considered. Specific areas covered include: (a) Pictures as information sources and their efficient encoding; (b) Approximation of pictures - sampling and quantization techniques; (c) Position-invariant operations on pictures and their implementation (digital, electro-optical, optical); applications to matched filtering (template matching), spatial frequency filtering and image ... |
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| A STUDY OF DISCRETE PROPAGATION-BASED MODELS FOR PICTORIAL PATTERN ANALYSIS. |
30 JUN 1967 |
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| Authors:
Azriel Rosenfeld; John L. Pfaltz; Haig Kafafian; KAFAFIAN (HAIG) ASSOCIATES WASHINGTON D C
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| This report describes algorithms for computing various functions on a digital picture which depend on the distance to a given subset of the picture. The algorithms involve local operations which are performed repeatedly, 'in parallel,' on every picture element and its immediate neighbors. Applications to the detection of 'clusters' and 'regularities' in a picture, and to the dissection of a region into 'pieces,' are also described. The medial axis transforms ... |
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| REMOTE SENSING AND URBAN INFORMATION SYSTEMS. FIVE PAPERS. |
APR 1966 |
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| Authors:
William L. Garrison; Azriel Rosenfeld; Robert H. alexander; Edwin N. Thomas; Duane F. Marble; NORTHWESTERN UNIV EVANSTON ILL DEPT OF GEOGRAPHY
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| This report consists of the following five papers which were presented at the Third Annual Conference on Urban Planning Information Systems, Chicago, Illinois, September, 1965: W. L. Garrison 'Demands for Small Area Data'; A. Rosenfeld 'Image Processing'; R. H. Alexander 'Multispectral Sensing of Urban Environments'; E. N. Thomas and D. F. Marble 'The Use of Remote Sensors in Urban Information Systems'; M. Thompson 'The Utilization of an Infrared Thermal Mapping ... |
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