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Peer reviewedConstantinescu, Cornel; Storer, James A. – Information Processing & Management, 1994
Presents a new image compression algorithm that employs some of the most successful approaches to adaptive lossless compression to perform adaptive online (single pass) vector quantization with variable size codebook entries. Results of tests of the algorithm's effectiveness on standard test images are given. (12 references) (KRN)
Descriptors: Algorithms, Coding, Data Processing, Evaluation
Peer reviewedMoffat, Alistair; And Others – Information Processing & Management, 1994
Evaluates the performance of different methods of data compression coding in several situations. Huffman's code, arithmetic coding, fixed codes, fast approximations to arithmetic coding, and splay coding are discussed in terms of their speed, memory requirements, and proximity to optimal performance. Recommendations for the best methods of…
Descriptors: Coding, Data Processing, Evaluation, Experiments
Peer reviewedCulik, Karel II; Kari, Jarkko – Information Processing & Management, 1994
Presents an inference algorithm that produces a weighted finite automata (WFA), in particular, the grayness functions of graytone images. Image-data compression results based on the new inference algorithm produces a WFA with a relatively small number of edges. Image-data compression results alone and in combination with wavelets are discussed.…
Descriptors: Algorithms, Coding, Comparative Analysis, Data Processing
Download full textLeimkuhler, Ferdinand F. – 1969
The transfer of information through space and time in communication systems is often accompanied by significant delays which give rise to meaningful storage problems. Mathematical models have been developed for the study of these kinds of problems which are applicable to the design of manual, library-type, or mechanized information storage and…
Descriptors: Communication Problems, Costs, Data Processing, Design
Flournoy, Nancy – 1972
Some of the schools participating in the Southwest Regional Laboratory's Instructional Management System (IMS) pilot test submitted input data forms to and received processed information from regional processing and data collection centers. To determine the feasibility of alternative methods of data collection and output return, evaluative data…
Descriptors: Computer Programs, Data Collection, Data Processing, Evaluation
Swanson, Rowena W. – 1970
This paper discusses several of the trends in information handling for text-based storage and retrieval systems that are prevalent in the United States. The paper considers, in particular, specialized information products, cooperative and networking activities, and work on standards. Information products include current awareness abstract…
Descriptors: Abstracting, Computer Oriented Programs, Data Processing, Evaluation
