This paper proposes a non-scanning display digital algorism both for still and moving picture. This innovative method is independent of display device or camera/transmission hardware configuration limited by the numbe...
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ISBN:
(纸本)076951507X
This paper proposes a non-scanning display digital algorism both for still and moving picture. This innovative method is independent of display device or camera/transmission hardware configuration limited by the number of scanning lines. The concept is the realization of effective image data transmission to display devices that is a change in the deviation of image is converted as digital bits data.
In this paper, we report on a series of experiments involving feedback and query, expansion. We conclude that query expansion using manually assigned keywords has no advantage over expansion using terms from the text ...
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ISBN:
(纸本)076951507X
In this paper, we report on a series of experiments involving feedback and query, expansion. We conclude that query expansion using manually assigned keywords has no advantage over expansion using terms from the text of the document.
A new technique for optimally encoding a given source, statistical properties of which are described by the first-order model is introduced. The calculation of a minimum length of codewords is based on the consecutive...
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ISBN:
(纸本)076951507X
A new technique for optimally encoding a given source, statistical properties of which are described by the first-order model is introduced. The calculation of a minimum length of codewords is based on the consecutive redistribution of the self-information of symbols in accordance with their probabilities at each stage of the encoding. The proposed method performs equally well for an arbitrary order of symbol probabilities. While cod words are generated by a separate combinatorial procedure, the overall computational cost of the proposed method is lower than that for the Huffman code.
Multiple description coding has been studied as an approach for transmission of images over error Prone environments. The multiple description coding method proposed here takes into account the content of the image an...
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ISBN:
(纸本)076951507X
Multiple description coding has been studied as an approach for transmission of images over error Prone environments. The multiple description coding method proposed here takes into account the content of the image and provides the least amount of degradation, caused by loss of descriptors, for those areas of the image which are of greater interest. This is achieved by employing a non-linear geometrical transform to odd redundancy mainly to the area of interest followed by a partitioning of the nonlinearly transformed image into sub-images which are coded and transmitted over separate channels, Simulations show that this approach yields exceptional performance even when only one descriptor is received. Moreover, the method proposed here can be implemented through pre- and post-processing of the image data, without modification to the source codecs (e.g., JPEG).
This paper provides results from a study analyzing current trends in multimedia Web searching. Results include: (1) multimedia searches are more complex than general searches in queries per user session and terms per ...
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ISBN:
(纸本)0769515061;076951507X
This paper provides results from a study analyzing current trends in multimedia Web searching. Results include: (1) multimedia searches are more complex than general searches in queries per user session and terms per query, and (2) audio queries are the most popular type of multimedia queries (compared to video and image queries) in number of queries submitted and query durations.
Novel synchronous coding schemes are introduced and relationships between optimal synchronous codes and Huffman codes are also discussed. Although the problem of existence of optimal synchronous codes has not been res...
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ISBN:
(纸本)0769515061;076951507X
Novel synchronous coding schemes are introduced and relationships between optimal synchronous codes and Huffman codes are also discussed. Although the problem of existence of optimal synchronous codes has not been resolved yet, we show that any synchronous code can consider as an optimal synchronous code for some information source and that there always exist optimal synchronous codes for the information source with a dyadic probability, distribution. Comparing with Huffman coding, the synchronous coding is used not only for statistical modeling but also for dictionary methods. Moreover, it is proven that breaking a synchronous code is NP-complete.
Every year, millions of pupils take part in the baccalaureate examination and entrance examinations to universities or colleges in Vietnam. It is vital to keep the questions secret in order to maintain fairness and pr...
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A large amount of on-line information resides on the invisible web - web pages generated dynamically from databases and other data sources hidden from the user. They are not indexed by a static URL but is generated wh...
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ISBN:
(纸本)076951507X
A large amount of on-line information resides on the invisible web - web pages generated dynamically from databases and other data sources hidden from the user. They are not indexed by a static URL but is generated when queries are asked via a search interface (we denote them as specialized search engines). In this paper we propose a system that is capable of automatically making use of these specialized engines to find information on the invisible web. We describe our overall architecture and process: from obtaining the search engines to picking the right engines to query. Experiments show that vie can find information that is not found by the traditional search engines.
XML is emerging as the "universal" language for semistructured data description/exchange, and new issues regarding the management of XML data, both in terms of performance and usability, are becoming critica...
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ISBN:
(纸本)076951507X
XML is emerging as the "universal" language for semistructured data description/exchange, and new issues regarding the management of XML data, both in terms of performance and usability, are becoming critical. The application of knowledge-based synthesization and compression methods (i.e. derivation of synthetic views and loss-less/lossy approximation of contents) can be extremely ben, eficial in this scenario. In this paper we present SqueezeX, a system for the synthesization/compression of XML data based on a multidimensional/classification-based interpretation of their schema and on the application of semantic-and type-oriented compression techniques.
To extract informative terms through known relevance information for query expansion is an important issue in the design of an effective text retrieval system. Various discriminant functions have been developed as a d...
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ISBN:
(纸本)0769515061;076951507X
To extract informative terms through known relevance information for query expansion is an important issue in the design of an effective text retrieval system. Various discriminant functions have been developed as a device for eliciting good terms. In this paper the notion of informativeness of terms is interpreted and discriminant functions are formalised both based on information-theoretic ideas for auromatic query expansion. Preliminary, results show that the approach adopted in this paper is worthy of continued investigation.
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