• The KIPS Transactions:PartB
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• v.13B no.6 s.109
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• pp.585-590
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• 2006

Although motion estimation Plays an important role in digital video compression, complex search procedure is required to find an optimal motion vector. To reduce the search time, the search start point should be set up properly md efficient search pattern is needed. If the overall motion of the torrent block can be predicted, motion estimation can be performed efficiently. In this paper. block types are classified using candidate vectors and the motion activity of the block is predicted which leads to the search start point close to the optimal motion vector. The proposed method proves to be about 1.5$\sim$7 times faster than existing methods with about 0.02$\sim$0.2(dB) improvement of picture quality in images with large movements.

• The Journal of the Korea Contents Association
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• v.12 no.2
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• pp.163-172
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• 2012

The hero is in the TV drama's long. TV drama Heroes historical blip on the public's desire to delegate to the body and its functions as an intensive, which have a specific period drama that soars like a hero's welcome and it is the communication between the viewer a sense of contemporary popular devices that can be separated. This study today, the various cultural areas which are becoming popular in Japan's historical hero 'Yoshitune' a heroic drama, the hero's narrative research stories In the analysis occupies an important place in the Joseph Campbell's 17 steps of heroic narrative, based on analysis achetype and adaptation. Campbell, 11 of the 17 stage dramas to apply different levels, and the omission of two steps, and shows a variation of the four stages, in order to relaunch the popular culture as the content selection and a constant strain was able to find out that you need.

• Journal of Broadcast Engineering
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• v.23 no.2
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• pp.302-315
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• 2018

Highly non-linear electro-optical transfer function of the Perceptual Quantizer was approximated by a truncated Taylor series, resulting in a closed form solution for luma adjustment. This previous solution is fast and quite suitable for the hardware implementation of luma adjustment, but the approximation error becomes relatively large in the range of 600~3,900 cd/m2 linear light. In order to reduce such approximation error, we propose a new linear model, for which a correction is performed on the position and the slope of line based on the scope of approximation. In order to verify the approximation capability of the proposed linear model, a comparative study on the luma adjustment schemes was conducted using various high dynamic range test video sequences. Via the comparative study, we identified a significant performance enhancement over the previous fast luma adjustment scheme, where a 4.65dB of adjusted luma t-PSNR gain was obtained for a test sequence having a large portion of saturated color pixels.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.8 no.2
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• pp.477-483
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• 2004

This paper describes preliminary results we have obtained in developing a computer vision system based on active IR illumination for real time gaze tracking for interactive graphic display. Unlike most of the existing gaze tracking techniques, which often require assuming a static head to work well and require a cumbersome calibration process for each person our gaze tracker can perform robust and accurate gaze estimation without calibration and under rather significant head movement. This is made possible by a new gaze calibration procedure that identifies the mapping from pupil parameters to screen coordinates using the Generalized Regression Neural Networks(GRNN). With GRNN, the mapping does not have to be an analytical function and head movement is explicitly accounted for by the gaze mapping function. Futhermore, the mapping function can generalize to other individuals not used in the training. The effectiveness of our gaze tracker is demonstrated by preliminary experiments that involve gaze-contingent interactive graphic display.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.11
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• pp.5117-5122
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• 2011

In this paper, thermal analysis simulation program by taking advantage of COMSOL Multiphysics, LED Module for the production of the most preferred package type, omitting the COH Type COB Type and board simulation of the thermal analysis is in progress. LED Module that passes through the Heat-sink of the simulation results, depending on the location of the COB Type Max. Approximately $78^{\circ}C$ ~ Min. Approximately $62^{\circ}C$, COH Type the Max. Approximately $88^{\circ}C$ ~ Min. Approximately $67^{\circ}C$ has been confirmed that the temperature stability. Compared with COB Type Max. AIthough temperature difference is about $10^{\circ}C$, Min. At a temperature of about $5^{\circ}C$ confirmed to be enough to reduce the gap, LED Point confirming the results of the temperature curves for COB Type Max. Approximately $100^{\circ}C$ ~ Min. Approximately $77^{\circ}C$, COH Type the Max. Approximately $100^{\circ}C$ ~ Min. Approximately $86^{\circ}C$ temperature stability was confirmed that, COB Type COH Type, compared to approximately $10^{\circ}C$ temperature was higher.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.11 no.6
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• pp.103-110
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• 2012

In Vehicle Safety Communication (VSC), noted as a representative application of VANET technologies, emergency warning messages (EWM) are broadcast over vehicles in response to an emergency situation. However, as the number of vehicles increases, the so-called Broadcast Storm Problem often occurs due to a huge number of redundant EWM transmitted. Though many approaches in the literature have been proposed to solve the problem, most of them require the preliminary phase for setting up or refreshing neighbor relationship through exchanging beacon messages with nearby vehicles, thereby further increasing the traffic load. In this paper, we propose Longest Leaping Relay (LLR) scheme which can efficiently solve the Broadcast Storm Problem without any preliminary phase for setting up neighbor relationship. Through computer simulations, we compared the performance of the proposed scheme with competitive schemes and verified the proposed scheme outperforms the existing schemes.

• (The)Study of the Eastern Classic
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• no.72
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• pp.329-363
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• 2018

The Manual for Buddhist Rituals (1935) is the manual of Buddhist rituals which has a pivotal position in terms of the modernization of Korean Buddhist rituals. The text has been established through the contents and systems of the two texts, The Manual for Practising Rituals (作法龜鑑, 1827) and the Compulsory Manual for Buddhists (佛子必覽, 1931). These three manuals include the examples for practising the Manuals. The analysis of the examples for the practices of the three texts is as follows: The Manual for Practising Rituals tries to include the Sounds of the Music for the Buddhist Rituals through the Four Sounds (四聲) and the Twin words (儷語); the marks of the sounds are excluded after the compulsory Manual for Buddhists. The Manual for Buddhist Rituals has replaced the rituals for repentance (三寶通請) with the rituals for revering (四聖禮): and this text has made it easier that people participate in Buddhist rituals with the text which is written in bilingual format in Korean and Classic Chinese. The text has been popularized through above-mentioned changes against the previous two texts but it has ended up excluding the practices for the music of Korean Buddhism such as the music for Buddhist rituals (梵唄) and reciting the name of Buddhas (念佛).

• Journal of the Korea Society of Computer and Information
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• v.27 no.8
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• pp.85-90
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• 2022

In this study, to reduce the time and cost disadvantages of the traditional motion graphic production method in order to realize the movement of a virtual camera identical to that of the real camera, motion graphics virtualization using AR Core-based mobile device real-time tracking data A method for creating a camera is proposed. The proposed method is a method that simplifies the tracking operation in the video file stored after shooting, and simultaneously proceeds with shooting on an AR Core-based mobile device to determine whether or not tracking is successful in the shooting stage. As a result of the experiment, there was no difference in the motion graphic result image compared to the conventional method, but the time of 6 minutes and 10 seconds was consumed based on the 300frame image, whereas the proposed method has very high time efficiency because this step can be omitted. At a time when interest in image production using virtual augmented reality and various studies are underway, this study will be utilized in virtual camera creation and match moving.

• Design Convergence Study
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• v.16 no.1
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• pp.97-109
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• 2017

Interest in the exterior design of buildings has increased in recent years. Demand for various architectural structures is increasing. However, domestic form liner and design are still limited. Thus, this research uses 3D printers to omit the existing mold production process. Use digital data to produce products economically using various materials. It can be hoped that extending the lifespan of the concrete structure will reduce the cost of saving costs. The purpose of this study is to utilize the 3D printers to develop the design of a suitable formative shape for the purposes of the concrete. In this study, 3D printed form enables the possibility that the actual application is practical. Consideration for the artistic design of the art line was proposed for the purpose of considering the use of concrete structures for concrete structures.

• Journal of the Earthquake Engineering Society of Korea
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• v.14 no.3
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• pp.31-38
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• 2010

The purpose of this study is to evaluate the seismic performance of gravity-designed post tensioned (PT) flat plate frames with and without slab bottom reinforcement passing through the column. In low and moderate seismic regions, buildings are often designed considering only gravity loads. This study focuses on the seismic performance of gravity load designed PT flat plate frames. For this purpose, 3-, 6- and 9-story PT flat plate frames are designed considering only gravity loads. For reinforced concrete flat plate frames, continuous slab bottom reinforcement (integrity reinforcement) passing through the column should be placed to prevent progressive collapse; however, for the PT flat plate frames, the slab bottom reinforcement is often omitted since the requirement for the slab bottom reinforcement for PT flat plates is not clearly specified in ACI 318-08. This study evaluates the seismic performance of the model frames, which was evaluated by conducting nonlinear time history analyses. For conducting nonlinear time history analyses, six sets of ground motions are used as input ground motions, which represent two different hazard levels (return periods of 475 and 2475 years) and three different locations (Boston, Seattle, and L.A.). This study shows that gravity designed PT flat plate frames have some seismic resistance. In addition, the seismic performance of PT flat plate frames is significantly improved by the placement of slab bottom reinforcement passing through the column.