DocumentCode
1311345
Title
Images from computers
Author
Schroeder, Manfred R.
Author_Institution
Bell Telephone Laboratories, Inc.
Volume
6
Issue
3
fYear
1969
fDate
3/1/1969 12:00:00 AM
Firstpage
66
Lastpage
78
Abstract
Modern digital computers, in conjunction with microfilm plotters, are capable of generating a wide variety of images. Beyond the mere plotting of curves, graphs, and labels, special programming techniques can produce halftone renditions of pictorial material with wide applications in optical signal processing and data portrayal. Other possibilities include the composition of images from alphanumeric characters, the generation of moir?? patterns, and the encryption of images with subsequent recovery by optical means using computer-generated ``keys.´´ More sophisticated techniques allow the combining in a single optical display of different kinds of information in hitherto unforeseen ways.
Keywords
Application software; Brightness; Cryptography; Laboratories; Optical computing; Optical films; Optical materials; Optical signal processing; Spectrogram; Telephony;
fLanguage
English
Journal_Title
Spectrum, IEEE
Publisher
ieee
ISSN
0018-9235
Type
jour
DOI
10.1109/MSPEC.1969.5214005
Filename
5214005
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