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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Korea Multimedia Society
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Korea Multimedia Society
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Volume 1, Issue 2 - Dec 1998
Volume 1, Issue 1 - Jun 1998
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Design and Implementation of A Video Information Management System for Digital Libraries
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 131~141
Video data occurred in multimedia documents consist of a large scale of irregular data including audio-visual, spatial-temporal, and semantic information. In general, it is difficult to grasp the exact meaning of such a video information because video data apparently consist of unmeaningful symbols and numerics. In order to relieve these difficulties, it is necessary to develop an integrated manager for complex structures of video data and provide users of video digital libraries with easy, systematic access mechanisms to video informations. This paper proposes a generic integrated video information model(GIVIM) based on an extended Dublin Core metadata system to effectively store and retrieve video documents in digital libraries. The GIVIM is an integrated mo이 of a video metadata model(VMN) and a video architecture information model(VAIM). We also present design and implementation results of a video document management system(VDMS) based on the GIVIM.
Java Method Technique for the Integration of Web and Object-Relational Database System
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 142~153
In this paper, Java Method approach for the integration of Web and Object-Relational DBMS is proposed. For the purpose, we extend to use Java language in programming user-defined function which is one of important characteristic of Object-Relational DBMS with object concept. Therefore we can retrieve not only database objects but also their associated Java methods to run in clients. Finally, to demonstrate the feasibility of the proposed Java Method technique, we designed and implemented this Java method system based on three-tier client/server architecture using JDBC(Java Database Connectivity) and Java RMI(Remote Method Invocation).
A Parallel Processor System for Cultural Assets Image Retrieval
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 154~161
This paper proposes a parallel processor system which processes cultural assets image recognition and retrieval algorithm in real time. A serial algorithm which is developed for the parallel processor system is parallellized. The parallel processor system consists of a control unit, 100 PE(Processing Elements), and 10 Park's multi-access memory systems which has 11 memory modules per each one. The parallel processor system is simulated by CADENCE Verilog-XL which is a package for the hardware simulation. With the same simulated results as that of the serial algorithm, the speed ratio of the parallel algorithm to the serial one is 81. The parallel processor system we proposed is quite effective for cultural assets image processing.
Implementation of Very Large Hangul Text Retrieval Engine HMG
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 162~172
In this paper, we implement a gigabyte Hangul text retrieval engine HMG(Hangul MG) which is based on the English text retrieval engine MG(Managing Gigabytes) and the Hangul lexical analyzer HAM(Hangul Analysis Module). To support Hangul information, we use the KSC 5601 code in the database construction and query processing stages. The lexical analyzer, parser, and index construction module of the MG system are modified to support Hangul information. To show the usefulness of HMG system, we implemented a NOD(Novel On Demand) system supporting the retrieval of Hangul novels on the WWW. The proposed system HMG can be utilized in the construction of massive full-text information retrieval systems supporting Hangul.
The 2-Phase Image Retrieval Technique using The Color and Shape Information
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 173~182
As a result of remarkable developments in multimedia technology, the image database system that can efficiently retrieve image data becomes a core technology of information-oriented society. In this paper, we proposed the 2-phase Image Retrieval System considering both color and shape information as the method of image features extraction for content-based image data retrieval. At the first level, to get color information, with improving and extending the indexing method using color distribution characteristic suggested by Striker et al., i.e. the indexing method considering local color distribution characteristics, the system roughly classifies images through the improved method. At the second level, the system finally retrieves the most similar image from the image queried by the user using the shape information about the image groups classified at the first level. To extract the shape information, we use the Improved Moment Invariants (IMI) that manipulates only the pixels on the edges of objects in order to overcome two main problems of the existing Moment Invariant methods large amount of processing and rotation sensitiveness which can frequently be seen in the Directive Histogram Intersection technique suggested by Jain et al. Experiments have been conducted on 300 automobile images. And we could obtain the more improved results through the comparative test with other methods.
Design of New Smoothing Mask of Color Inverse Halftoning
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 183~193
Color inverse halftoning is the transformation of a color-halftone image to a continuous-tone color image that is more natural in human vision. In this paper, we propose a new smoothing mask that can remove halftone patterns in channel effectively and we apply it to color inverse halftoning. The proposed smoothing mask can make channel images more smooth and natural in human vision than traditional ones. Its characteristic can be adapted automatically according to the various color halftone images. We analyze the result images in various aspects through experiments. Experimental results show that the mask is useful for color inverse halftoning. It can be applied to field of multimedia application, such as desktop publishing, color facsimile and digital library construction.
Image Compression with Edge Directions based on DCT-VQ
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 194~203
In this paper, a new DCT-VQ method is proposed which can solve the problems of VQ such as the degradation of edge and enormous calculations. VQ is carried in DCT domain but spatial domain in order to protect the degradation of edge. DCT makes high correlated image data decorrelated and the energy concentrated on a few coefficients. In DCT domain, the DC coefficient is quantized with 8 bits uniform scalar quantizer and the AC coefficients are divided to three regions and coded with vector qiantizer for considering edge components. For the decrease of the calculation and memory, the vectors for three region have small dimension of
and use the same codebook. Thus, the proposed method can fully express the edge components by considering AC coefficients in DCT domain and decrease the calculation and memory be reducing the dimension of vectors.
Design and Implementation of Virtual Tutoring Estimation System on the Internet Environment
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 204~214
The existing tutoring estimation systems using the authoring tools or HTML forms on the Web environment don't have been improved inconvenient factors of uni-directional interactive systems. In this paper, we design and implement the interactive tutoring estimation system which is conveniently considered to user on the internet environment. The proposed system is divided into teacher and student modules, which have the functions of the new problem insertion and deletion in database, regular examination marking for the former and lecture/test selection, scoring look, etc for the letter. The environment of server system in this thesis is implemented using the IDC file and SQL database for internet access based on Windows NT, client systems are composed to Windows 95 environment based on Explorer or Netscape to access for interactive tutoring systems.
A Design and Implementation of User Interaction-Oriented Integrated Virtual Education System
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 215~223
This paper introduces the method for a design and implementation of an integrated virtual education system WebClass which is based on the World Wide Web and maximizes the interaction among users. Existing virtual education systems did not provide a flexible integration of their functions as they included various interaction functions without user interaction models. We designed an user interaction model for supporting various instructional model and implemented user interfaces of WebClass based on the interaction model. Thus we developed an intergrated virtual education system that is based on user interaction model instead of amalgam of various interaction functions. WebClass support both synchronous and asynchronous sharing functions for user interactions. Our goal was to support and efficient virtual education by maximizing user interaction.
A Redefinition and Circuit Translation of the Extended Mark Flow Graph for the Design and Analysis of the Discrete-event System
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 224~238
The EMFG (Extended Mark Flow Graph) is not only a powerful tool for designing the discrete-event system conceptually or specifically but also a good representation tool for implementing the system directly. But it is difficult to design or analyze the system because the impossibility of mathematical analysis results from some complicated representation of the EMFG. In this paper, therefore we redefined EMFG representations to provide the possibility of mathematical analysis, and employed an output inhibit are of a transition, which makes possible the adequate representations for the indescribable parts. We also solved trouble parts in the circuit translations of the EMFG and proposed the circuit translation method by using the mathematical formula. Finally, we compared the conventional EMFG with the redefined EMFG, and we designed a 0101 detecter with the redefined EMFG and translated it to the corresponding circuit.
A Study on Refined Information Generation through Classes Composition Based on Reengineering
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 239~248
Software reengineering is making various research for solutions against problem of maintain existing system. Reengineering has a meaning of development of softwares on existing systems through the reverse-engineering and the forward-engineering. It extracts classes from existing system's softwares to increase the comprehension of the system and enhance the maintenability of softwares. Most of the important concepts used in reengineering is composition that is restructuring of the existing objects from other components. The classes and clusters in storage have structural relationship with system's main components to reuse in the higher level. These are referenced as dynamic informations through structuring an architect for each of them. The classes are created by extractor, searcher and composer through representing existing object-oriented source code. Each of classes and clusters extract refined informations through optimization. New architecture is created from the cluster based on its classes' relationship in storage. This information can be used as an executable code later on. In this paper, we propose the tools, it presented by this thesis presents a new information to users through analysing, based on reengineering, Object-Oriented informations and practicing composition methodology. These composite classes will increase reusability and produce higher comprehension information to consist maintainability for existing codes.
Impact of Call Setup Time on UPT Performance Based on AIN Platform
Baik, In-Kywan ; Jo, Jun-Mo ; Kim, Sung-Un ; Jung, Sin-Il ;
Journal of Korea Multimedia Society, volume 1, issue 2, 1998, Pages 249~255
This paper analyzes the impact of Call Setup Time on UPT performance based on the AIN platform. Call Setup Time is used as the performance parameter. In implementing UPT based on the AIN platform, the geographical location of VLR affects network performance. In order to find an optimum location of VLR among three different types of structures, i.e. VLR is located close to Service Switching Point and Cell Site Controller and located at Service Control Point, each Call Setup Time on proposed time delay model is calculated and compared. Network performance is analyzed by changing the number of STP in No.7 signaling network in UPT and the utilization ratio,
, for SSP, STP and SCP.