• Journal of The Korean Association of Information Education
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• v.5 no.3
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• pp.337-350
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• 2001

It is very important thing providing basic theoretical structure to research about computer education to establish scientific identity of computer education. In addition, it will be expect to contribute qualitative improvement of computer education. As this viewpoint, I discussed about education in knowledge-information based society and the relation between knowledge, information, and ICT in this study. Through this discussion, I researched necessity and direction of computer education. Also, I researched the concept of computer subject matter education from discussion about the concept of subject matter education. In addition, I surveyed the concept, premises and elements of subject matter education, and I led the structure and direction of the computer subject matter education as subject matter education.

• The Journal of the Korea Contents Association
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• v.13 no.11
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• pp.347-355
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• 2013

This study analyzed President Lee's speeches of Korea and the policy of SMES and ventures in the field of information technology using cognitive map analysis. The relationship analysis between policy tool variables and policy goal variables was employed to derive policy direction of IT SMEs and ventures. This paper suggests growth competence reinforcement, investment revitalization, revitalization of start-up companies, enhancement of technology competition, globalization and job creation to the policy direction of IT SMEs and ventures. In this paper, we constructed a cognitive map on the policy vision of SMEs and ventures in the field of information technology. This study also showed that this cognitive map could be characterized by a scarcity of feedback loops and a strong emphasis on the positive loops in the structure of virtuous circle.

• Journal of Korean Society for Geospatial Information Science
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• v.20 no.4
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• pp.145-151
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• 2012

The purpose of the present study is to suggest the development direction for the neutral library which can describe the parametric modeling and design algorithm to design the construction spatial information which is known as BIM. To do this, we surveyed the recent research related to neutral library and analyzed the library technology of BIM modeler such as Revit, Archicad. By using this result, we suggested the development direction based on BIM description script language for the neutral BIM library including the parametric design and the algorithm definition.

• ETRI Journal
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• v.30 no.4
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• pp.506-515
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• 2008

The H.264/AVC standard has adopted new coding tools such as intra-prediction, variable block size, motion estimation with quarter-pixel-accuracy, loop filter, and so on. The adoption of these tools enables an H.264/AVC-coded bitstream to have more information than was possible with previous standards. In this paper, we propose an effective spatial error concealment method with low complexity in H.264/AVC intra-frame. From information included in an H.264/AVC-coded bitstream, we use prediction modes of intra-blocks to recover a damaged block. This is because the prediction direction in each prediction mode is highly correlated to the edge direction. We first estimate the edge direction of a damaged block using the prediction modes of the intra-blocks adjacent to a damaged block and classify the area inside the damaged block into edge and flat areas. Our method then recovers pixel values in the edge area using edge-directed interpolation, and recovers pixel values in the flat area using weighted interpolation. Simulation results show that the proposed method yields better video quality than conventional approaches.

• Journal of The Korean Association of Information Education
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• v.8 no.3
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• pp.417-432
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• 2004

The rapid development of ICT(Information and Communication Technology), beyond the argument of information society, has invoked discussion of knowledge-based society and enhanced the importance of the producing knowledge by using implementation of ICT. However, current computer education, without exactly defining the conception of ICT and direction of computer education, has great limitations in applying into education because it has mechanical characteristics and is not satisfying the demands of education that is supposed to bring up the creative human beings in current knowledge-based society. This study starts from the recognition of such problems. This paper explores the current computer education and argument. In addition, we researched necessity and direction of the computer education as subject matter.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.12 no.12
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• pp.6000-6017
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• 2018

This paper presents a new descriptor, named Histograms of Prominent Edge Directions (HPED), for the recognition of facial expressions in a person-independent environment. In this paper, we raise the issue of sampling error in generating the code-histogram from spatial regions of the face image, as observed in the existing descriptors. HPED describes facial appearance changes based on the statistical distribution of the top two prominent edge directions (i.e., primary and secondary direction) captured over small spatial regions of the face. Compared to existing descriptors, HPED uses a smaller number of code-bins to describe the spatial regions, which helps avoid sampling error despite having fewer samples while preserving the valuable spatial information. In contrast to the existing Histogram of Oriented Gradients (HOG) that uses the histogram of the primary edge direction (i.e., gradient orientation) only, we additionally consider the histogram of the secondary edge direction, which provides more meaningful shape information related to the local texture. Experiments on popular facial expression datasets demonstrate the superior performance of the proposed HPED against existing descriptors in a person-independent environment.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.26 no.4
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• pp.49-54
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• 2008

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.30 no.4
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• pp.27-30
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• 2012

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.25 no.2 s.213
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• pp.5-7
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• 2007

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.28 no.11
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• pp.105-111
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• 2010