• Journal of the Korean Society for Library and Information Science
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• v.34 no.1
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• pp.155-180
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• 2000

As informatization has been accelerated, the secure information flow has become a major social concern. In that, this paper examines the theoretical background of the information society and the concept of universal service; compares the contrasting perspectives on the social meanings of information; analyzes the definition, importance, and components of information security and suggests some strategies on information security centering around the technical and institutional aspects of it. In so doing, this study aims at establishing the information security and at enhancing our understanding on the information society.

• Journal of Information Management
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• v.25 no.2
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• pp.61-94
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• 1994

The development of libraries services has been influenced by the nature and the changes of social environment where the library's functions are ultimately fulfilled. Community information services of libraries are designed to cope with the changes more efficiently in information society. In this paper, the concept and background of community information services are introduced and expected benefits of offering them are discussed. In addition, based on the results which examination 19 public libraries in seoul, some recommendations for effective community information services are suggested.

• International Journal of Contents
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• v.17 no.1
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• pp.27-36
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• 2021

Information design is a new scientific subject, which was named in the 20th century. The design methods of information design and the display of information are continually evolving with the change in the world. While sorting out the background and concept of information design, this article aims to identify the issues of information design. One issue is that environmental information design is a vague concept. Thus, leading to this type of information design is without any comprehensive analysis. Second, the impact of culture has not received adequate attention. This article is based on the Japanese Wabi-sabi culture. It analyzes the impact of culture on information design. The article deeply explores the role of Wabi-sabi in information design through case studies, and it reflects the characteristics of design products by culture.

• Journal of the Korean Society for Library and Information Science
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• v.28
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• pp.193-245
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• 1995

New curriculum for information and library science is proposed on the notion of the internship and scholarly characteristics. The future of the information and library science is expected as the discipline to synthesize the natural science and the social science. Especially the internship is strongly suggested as the post graduate program. To draw the conclusion. the history of the information and library science and its educational background are analyzed. The states of the historical developments of the information and library science are explained in terms of philosophy. The functional and scholarly environments of the information and library science are also investigated. Secondarily it concludes that the curriculum development for information and library science is not aimed on the skills but on the phenomena.

• Journal of the Korean Society for information Management
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• v.9 no.1
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• pp.165-181
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• 1992

The purpose of this study is to review the c-oncept and background of intelligent information system whlch will be fixed on the next generation's information system and to describe the object orientation system. expert system, and hypermedia which are thc core technolclgies in the design of intelligent information system. Furthtmnort., intelligent information systems which are developed using these technologies in the fields of library anti information science, and the future prospect on the intc~lligent information system are described In detail.

• Korean Journal of Cognitive Science
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• v.23 no.3
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• pp.409-424
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• 2012

The purpose of the present study was to examine if perception of visual coordination pattern is consistent with the prediction of the HKB model (Haken, Kelso, Bunz, 1985). In addition, this study aimed to see if an additional sensory information using a grid background stabilizes perception of coordination pattern. Participants joined one of two experimental groups, Normal background and Grid background, to participate the pattern recognition training session and the pattern judgment test session. Participants observed $0^{\circ}$, $18^{\circ}$, $36^{\circ}$, $54^{\circ}$, $72^{\circ}$, $90^{\circ}$, $108^{\circ}$, $126^{\circ}$, $144^{\circ}$, $162^{\circ}$, and $180^{\circ}$ coordination patterns characterized by two oscillating dots. The dots oscillated in 0.25 Hz for the pattern recognition training and in 0.5 Hz, 1 Hz, and 2 Hz for the pattern judgment test. Judgment score, absolute judgment error, and judgment stability out of the pattern judgment test were analyzed statistically. The landscape of pattern accuracy and stability data was "inverted-U" shape with slower oscillating frequency conditions. In the faster condition, the accuracy and stability of the judgment decreased with relative phase patterns near $180^{\circ}$. These findings consistent with the prediction of the HKB model. The grid as additional sensory information did not increase accuracy and stability in coordination perception.

• The KIPS Transactions:PartB
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• v.15B no.1
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• pp.25-36
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• 2008

In this paper, we present a robust hand recognition approach to sudden illumination changes. The proposed approach constructs a background model with respect to hue and hue gradient in HSI color space and extracts a foreground hand region from an input image using the background subtraction method. Eighteen features are defined for a hand pose and multi-class SVM(Support Vector Machine) approach is applied to learn and classify hand poses based on eighteen features. The proposed approach robustly extracts the contour of a hand with variations in illumination by applying the hue gradient into the background subtraction. A hand pose is defined by two Eigen values which are normalized by the size of OBB(Object-Oriented Bounding Box), and sixteen feature values which represent the number of hand contour points included in each subrange of OBB. We compared the RGB-based background subtraction, hue-based background subtraction and the proposed approach with sudden illumination changes and proved the robustness of the proposed approach. In the experiment, we built a hand pose training model from 2,700 sample hand images of six subjects which represent nine numerical numbers from one to nine. Our implementation result shows 92.6% of successful recognition rate for 1,620 hand images with various lighting condition using the training model.

• Journal of Korea Multimedia Society
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• v.18 no.5
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• pp.610-619
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• 2015

*In this paper, we propose a real-time face tracking system using an adaptive face detector and a tracking algorithm. An image is divided into the regions of background and face candidate by a real-time updated skin color identifying system in order to accurately detect facial features. The facial characteristics are extracted using the five types of simple Haar-like features. The extracted features are reinterpreted by Principal Component Analysis (PCA), and the interpreted principal components are processed by Support Vector Machine (SVM) that classifies into facial and non-facial areas. The movement of the face is traced by Kalman filter and Mean shift, which use the static information of the detected faces and the differences between previous and current frames. The proposed system identifies the initial skin color and updates it through a real-time color detecting system. A similar background color can be removed by updating the skin color. Also, the performance increases up to 20% when the background color is reduced in comparison to extracting features from the entire region. The increased detection rate and speed are acquired by the usage of Kalman filter and Mean shift.

• The Journal of the Korea Contents Association
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• v.5 no.4
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• pp.85-93
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• 2005

In this paper, we propose recognition system which tracks the unmarked hand of a person performing sign language in complex background. First of all, we measure entropy for the difference image between continuous frames. Using a color information that is similar to a skin color in candidate region which has high value, we extract hand region only from background image. On the extracted hand region, we detect a contour and recognize sign language by applying improved centroidal profile method. In the experimental results for 6 kinds of sing language movement, unlike existing methods, we can stably recognize sign language in complex background and illumination changes without marker. Also, it shows the recognition rate with more than 95% for person and $90\sim100%$ for each movement at 15 frames/second.

• Journal of Digital Contents Society
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• v.8 no.3
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• pp.329-339
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• 2007

In this paper we present a facial region detection algorithm for real-time image with complex background and various illumination using spatial and temporal methods. For Detecting Human region It used summation of Edge-Difference Image between continuous image sequences. Then, Detected facial candidate region is vertically divided two objected. Non facial region is reduced using Analysis of Major Color Component. Non facial region has not available Major Color Component. And then, Background is reduced using boundary information. Finally, The Facial region is detected through horizontal, vertical projection of Images. The experiments show that the proposed algorithm can detect robustly facial region with complex background various illumination images.