• Proceedings of the IEEK Conference
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• 2003.07e
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• pp.2347-2350
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• 2003

본 논문에서는 디스플레이 장치의 색 재현에 있어서 인간의 시각 특성에 의해 얻어진 Munsell 계의 등색상 및 등채도 궤적을 고려한 색 재현 방법을 제시하였다. 이 방법에서는 먼저 TV 신호 상에서 등위상의 색에 대한 궤적과 인간의 시각 특성에 의해 얻어진 Munsell 계의 등색상 궤적을 비교 분석하였다. 그리고 비표준 디스플레이의 색 재현 영역이 표준 디스플레이의 것과 다를 때도 W표준 신호와 동일한 색상을 갖는 색 좌표를 Munsell 계의 등색상 궤적상에서 구하여 이 색이 재현될 수 있도록 하였다 따라서 표준 디스플레이와 다른 색재현 영역을 가지는 일반 디스플레이에서도 표준의 것과 같은 느낌을 가지는 등색상 재현이 가능하다. 색 재현 성능을 평가를 위해 Macbeth colorchecker colors의 18 종류의 컬러를 사용한 결과. 색 재현 오차 ΔE'/sub uv/가 기존 방법의 오차보다 작아짐을 확인하였다. 또한, 주관적인 평가에서도 보다 자연스런 색 재현이 되고 있음을 확인하였다.

• Journal of Korean Society of Transportation
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• v.21 no.2
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• pp.155-164
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• 2003

현재 국내에서는 교통사고 재현 방법이 노면 흔적물에 의존하여 이루어지고 있고, 노면 흔적물이 없는 경우 교통사고 재현은 불가능하게 된다. 이러한 단점을 보완하기 위해 외국에서는 충돌모델을 이용한 교통사고 재현프로그램을 활용하고 있는 추세이다. 현재 우리나라에서 가장 많이 사용하는 교통사고 재현 프로그램 PC-CRASH를 활용하기 위해서는 각 사고마다 알맞은 충돌특성 인자 값을 사용자가 직접 입력하여 사용하여야 하나, 이를 활용할 수 있는 활용자료가 부족한 실정이다. 본 연구는 국내에서 실제 발생된 교통사고 사례에 대해 교통사고 재현 프로그램인 PC-CRASH와 충돌에 영향을 미치는 충돌 인자들로 교통사고를 재현하였고, 차량의 최종위치간 거리와 자세에 어떠한 영향을 미치는가를 알아보았다. 또한 실제 역 해석을 하기 위해 차량의 최종위치와 자세만으로 각각의 사례에 적절한 인자값을 추정할 수 있는 회귀식을 구성하였고, 통계적으로 신뢰성을 검증하였다. 사고 재현에 필요한 주요 충돌인자들의 초기치 설정시 추정식을 이용할 경우, 사고 재현 프로그램 활용 시, 시간 단축 효과를 프로그램 내부에 있는 유전자 알고리즘의 반복횟수로 추정식의 통계적 검증을 하였다.

• Journal of Korea Water Resources Association
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• v.47 no.5
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• pp.447-457
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• 2014

This research focuses on the changes of return period for nonstationary rainfall data in which exceedance or nonexceedance probability varies depending on time. We examined two definitions of return period under nonstationarity and also performed nonstationary frequency analysis using the nonstationary Gumbel model to investigate variations of return period in Korea. Seogwipo, Inje, Jecheon, Gumi, Mungyeong, and Geochang were selected as subject sites of application. These sites have a trend in rainfall data as well as having more than 30 years data. As the results of application, the return periods considering nonstationarity are different with those considering stationarity. The differences of return periods between nonstationarity and stationarity increase as growing return period increases. In addition, the return period using the expected waiting time method shows lower value than that using the expected number of event method.

• The korean journal of orthodontics
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• v.38 no.5
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• pp.314-327
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• 2008

Objective: The purpose of this study was to evaluate the reproducibility of measurements representing asymmetry of the mandible and to identify which landmarks would be more useful in 3-dimensional (3D) CT imaging. Methods: Facial CT images were obtained from forty normal occlusion individuals. Eighteen landmarks were established from the condyle, gonion, and menton areas, and 25 measurements were constructed to represent asymmetry of the mandible; 8 for ramus length, 12 for mandibular body length, 1 for condylar neck length, 2 for frontal ramal inclination, and 2 for lateral ramal inclination. Inter- and intra-examiner reproducibility of the measurements was evaluated. Results: Inter-examiner reproducibility of the measurements proved to be high except for 3 measurements. Intra-examiner reproducibility also proved to be high except for 2 measurements. Inter- and intra-examiner reproducibility of the measurements including Gonion proved to be low. Conclusions: The results of the present study indicate that the landmarks and measurements constructed in 3D CT images can be used for the diagnosis of facial asymmetry.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1999.11a
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• pp.101-104
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• 1999

완벽한 가상 현실을 재현하려면 사람의 오감을 실제 세계 수준으로 정교하게 재현해야 한다. 현재 시각 효과는 상당히 발전해 있으나, 청각적, 음향적 부분은 아직도 발전 정도가 상대적으로 낮다. 가상 현실을 위한 음향은 크게 HRTF등을 이용한 음상 정위와, 음장 재현으로 나눌 수 있다. 본 논문에서는 가상 현실 체험자의 이동에 따라 효과적으로 음장을 재현하는 방법에 대해 논하고자 한다. 본 논문에서 제안하는 시스템은 크게 전처리 부분과 실시간 처리 부분으로 구성되어 있으며 전처리 과정에서 음장을 계산하여 실시간 처리 부분에서 체험자의 위치를 추적하여 음장을 재현한다.

• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.555-566
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• 2012

The purpose of this study is to investigate the strategy of representation of homosexuality in the mainstream media and its meaning. And it also concerns what would be the limit of representations of homosexuality and what would be the discourse these representations produce in the major terrestrial broadcasting. For this investigation, we conducted the analysis of , the mainstream television drama, focused on the gay couple characters and their representations of conflicts and resolutions by comparing with the two heterosexual couples to figure out the differentiated representation strategies of homosexuality. As results of the analysis, the representation of sociogenic cause of conflict is absent for gay couple while it was found in the case of one heterosexual couple. And gay couple is exposed to the interpersonal conflicts against their family members than heterosexual couples and described as victims. Lastly, gay couple was represented as needing mediators to solve their problems while heterosexual couple was represented as ensuring subjectivity for the resolutions of conflicts.

• The Journal of the Korea Contents Association
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• v.21 no.2
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• pp.528-537
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• 2021

This thesis aims to analyze the possibility of the self-representation style of Korean post-documentaries in the 2000s and analyze the possibilities of the visual writing. First of all, this study examined the theoretical background of the documentary, and derived the theoretical concepts from the poetic style and the performance style presented by Bill Nichols, and divided the strategies of self-representation in the post documentary into three categories. The three strategies of self-representation were to discuss the possibility of self-representation through the analysis of works through self-representation as self-emotion, self-representation as body, and self-visual representation. In the process of this discussion, I will examine how self-representation style deconstructs the existing visual system consisting of the system of the power and functions as a alternative visual writing that can appear various women and minorities.

• The korean journal of orthodontics
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• v.32 no.1 s.90
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• pp.59-69
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• 2002

The purpose of this study was to evaluate the reproducibility of lateral cephalometric landmarks according to radiographic image enhancement, and to contribute to the identification of cephalometric landmarks. Lateral cephalograms of ten individuals were taken and stored into computer. The images were then enhanced up to four grades by Quick Ceph Image Pro$^{TM}$ on condition that the gray-scale equalization number was 50 and the detail enhancement number was 50. After thirty two landmarks were identified on monitor images by five observers, the deviations from the mean, the distances estimated between identified points and the mean point of five identified points, were evaluated for each landmark at each enhancement grade. Through the statistical analysis, following results were obtained. 1. In case of unenhanced radiographic images, the inter-observer reproducibility of the landmarks showed a large variation. 2. The comparison of deviation from the mean according to the degree of radiographic image enhancement for each landmark showed that the inter-observer reproducibility was significantly different at 5 landmarks. 3. The landmark of pterygomaxillary fissure showed higher reproducibility at enhancement grade 1 and 2 images than at unenhanced images. So did the landmark of posterior nasal spine at enhancement grade 1 images, and the landmark of menton at enhancement grade 2, 3 and 4 images respectively. The above results suggest that the reproducibility of some landmarks can be increased by radiographic image enhancement during the identification of the lateral cephalometric landmarks on the monitor.

• Journal of Korea Entertainment Industry Association
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• v.15 no.2
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• pp.59-81
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• 2021

This study examines representations of children and youths in TV commercials both quantitatively (May 2019-April 2020) and qualitatively (thirteen relevant cases). The study's case analyses explore the representation of the 'sexual objectification' of girls, the 'sexual spectacle' of female adolescents, representations that reinforce stereotypes of femininity/masculinity, and the objectification of girls to elicit sympathy for the purposes of raising donations. This study reveals that TV commercials and existing advertisements adhere to representations of established gender roles. This dichotomous representation of gender is problematic since it functions as the starting point of various sexual crimes and gender inequality. For example, most of the victims of the sexual exploitation incident called 'Room Number, N', which shocked Korean society, were female adolescents. These adolescents were seen as men's sexual objects because of this kind of dichotomous thinking. TV commercials are part of the binary representation of deep-rooted stereotypes regarding femininity and masculinity. This study problematizes this representation in order to surpass its limitations. Moreover, an alternative mode of thinking is suggested through the theory of Deleuze and Guattari.

• Proceedings of the Korean Information Science Society Conference
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• 2000.10b
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• pp.550-552
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• 2000

최근에는 디지털 박물관을 비롯하여, 미술품이나 역사적 유물들을 디지털 형태로 재현하려는 시도들이 활발해지고 있다. 디지털 형태로의 재현은 시공간의 제약을 받지 않으면서 컴퓨터 상에서 해당 미술품이나 유물을 감상할 수 있는 기회를 제공한다. 반면에, 고전적인 기계식 시계들 중의 하나인 테리 시계(Terry's clock)와 같은, 움직이는 유물은 내부의 기계 장치와 그에 따른 동적인 움직임 때문에 컴퓨터 상에서 재현하기가 까다롭다. 특히, 시계를 비롯한 비교적 오래된 기계 장치들은 기어나 진자와 같은 각각의 부품들을 재현한 후, 그 움직임을 동역학 기법들을 비롯한, 물리 법칙에 기반한 기술들로 재현하여야 한다. 본 논문에서는 기존의 운동학 방법들을 이용하여 각 부품의 움직임을 재현함으로써, 테리 시계를 컴퓨터 상에서 복원하였다. 본 논문에서 사용된 방법들은 다른 기계 장치들의 재현에도 응용 가능하다.