• Archives of design research
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• v.19 no.1 s.63
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• pp.79-88
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• 2006

A human face figure is a visual symbol of identity. Each different face per person is a critical information differentiating each person from others and it directly relates to individual identity. When we look back human history, historical change of recognition for a face led to the change of expression and communication media and it in turn caused many changes in expressing a face. However, there has not been no time period when people pay attention to a face more than this time. Technically, the advent of computer graphics opened new turning point in expressing human face figure. Especially, a visual image which can be produced, saved, and transferred in digital has no limitation in time and space, and its importance in communication is getting higher and higher. Among those visual image information, a face image in digital is getting more applications. Therefore, 3d (3-dimensional) expression of a face using computer graphics can be easily produced without any professional techniques, just like assembling puzzle parts composed of the shape of each part ands texture map, etc. This study presents a method with which a general visual designer can effectively express 3d type face by studying each producing step of 3d face expression and by visualizing case study based on the above-mentioned study result.

• Proceedings of the KIEE Conference
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• 2003.11c
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• pp.758-761
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• 2003

금석문의 영상데이터를 디지털 형태로 검출하고, 영상신호처리 알고리즘을 사용하여 신호의 특성을 분석하고 그 결과를 제시하였다. 대상체는 비석에 음각된 문자로 하였다. 대전 주변의 백제권에서 몇몇 유형의 음각 문자를 형태별로 분류하여 디지털 이미지화한 다음, 문자가 각인된 정보영역과 바탕영역의 신호패턴을 추출하였다. 먼저 칼라 이미지를 grey tone으로 변환한 후, 전처리 과정을 거쳐 이미지의 노이즈나 불명확성을 제거하고 히스토그램 전 영역에 걸쳐 스케일 확장시켰다. 문자가 각인된 정보영역과 바탕영역을 구분하여 무작위로 소이미지 샘플을 취득하고 각 소이미지의 신호패턴을 분석하였다. 그 결과를 중첩의 원리를 이용하여 합성한 후 영역별 신호분석 패턴을 정형화하였다. 유형별로 다소 차이를 보이나 두 영역의 이미지 분석 결과는 차별성을 보였다. 문자 영역은 grey level 범위가 좁고 한정되며 일관성을 보이는데 비해, 바탕영역은 범위가 넓고 광범위하였다. 두 영역의 교차 레벨 범위는 극히 제한적이었으며 패턴 분리에 큰 영향을 끼치지 못하였음이 밝혀졌다. 이 일련의 과정은 알고리즘화되어, 1-2분 정도의 사전 작업만 하면 프로그램에 의해 문자를 추출할 수 있다. 이러한 사실들은 종래 무리한 탁본 작업에만 전적으로 의존하던 금석학 분야의 디지털화를 가능케 할 수 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.11 no.8
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• pp.1442-1449
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• 2007

Shadows are important elements for realistic rendering of the 3D scene. We cannot recognize the distance of objects in the 3D scene without shadows. Two methods, image-based medthods and object-based methods, are largely used for the rendering of shadows. Object based methods can generate accurate shadow boundaries. However, it cannot be used to generate the realtime shadows because the time complexity defends on the complexity of the 3D scene. Image based methods which are techniques to generate shadows are widely used because of fast calculation time. However, this algorithm has aliasing problems. PCF is a method to solve the aliasing problem. Using PCF technique, antialiased shadow boundaries can be generated. However, PCF with large filter size requires more time to calculate antialiased shadow boundaries. This paper proposes an improved PCF technique which generates antialiased shadow boundaries similar to that of PCF. Compared with PCF, this technique can generate antialiased shadows in less time.

• Cartoon and Animation Studies
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• s.42
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• pp.177-194
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• 2016

This study investigated an evolutionary process of In-game Animation and researched on the action of realization establishing virtual reality. In-game Animation, functioning as contents to visualize games, is responsible for conveying information to achieve goals of games. In-game Animation which is affected by graphic technology was initiated with setting up indicators by dot and line. Followed by the development of technology, In-game Animation has pursued realization, after passing through processes of iconography, materialization, and dimensionalization. The realization of In-game Animation does not simply imitate the real world but creates meaning of reality by establishing space with various factors such as characters and background along with the story, under the premise of virtuality. The realization of In-game Animation is very important to provide the experience of immersion, as it forms a sense of presence through such visual tactility. The process to create meaning of reality provides gamers with experiences, and leads them to expand senses through visual perception and finally absorb the virtuality as reality. Therefore, the image of In-game Animation does not simply imitate the real world but creates meaning of reality by establishing space with various factors such as characters and background along with the story, under the premise of virtuality. The realization of In-game Animation is not limited to blindly portray a realistic image. In addition, the process of realization pursued by In-game Animation is an action to immerse in the game rather than a mere product of technological development.

• Proceedings of the Korea Fashion and Costume Design Association Conference
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• 2004.06a
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• pp.11-12
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• 2004

흔히 사람들은 난 '옷을 몰라' 하면서도, 어떤 형태든 옷을 입는다. 그리고 그 옷을 입은 '최종형태'는 곧 그 사람의 이미지를 형성한다. 사실은 '어떤 옷을 입느냐' 로부터 자유로운 사람은 한 사람도 없다. 옷은 한 사람의 전체를 보여줄 뿐만 아니라, 오랜 세월 축적되면, 각 계급 계층, 지역, 국가의 특징이 고스란히 담기게 되고, 나아가 한 시대의 역사적인 모든 요소들을 반영하고 그 시대정신과 철학까지를 반영한다.(중략)

• The Journal of Korean Association of Computer Education
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• v.15 no.1
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• pp.55-64
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• 2012

The purpose of this study is to identify how realism of pedagogical agent can have impacts on persona effect and cognitive load factors. Eighty-two college students participated, and the independent variables of this study were the degree of image details and presence of gesture. The degree of image details were picture, illustration, and line-drawing. The $3{\times}2$ factorial design was applied. There was a significant interaction effect on the engaging of agent persona instrument. When the learners were under the condition of line-drawing agent without gesture, they showed the highest score on engaging of the agent persona instrument. Regarding the cognitive load factors, when learners under the condition of line-drawing showed the highest score of self-evaluation.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.11a
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• pp.113-116
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• 2011

고해상도 이미지 센서를 장착한 고가의 모바일 제품들이 확산되면서 중간값 필터에 기반을 둔 잡음 제거 필터의 필요성이 증가하고 있다. 이는 초박형 카메라에 내장된 이미지 센서의 물리적인 수광부 면적이 줄어듦에 따라 이미지 센서의 SNR이 떨어지기 때문이다. 게다가 영상의 해상도가 매우 높기 때문에 잡음제거 필터는 초고속으로 동작해야 한다. 따라서 잡음 제거 필터의 핵심 기능인 중간값 필터는 높은 동작주파수에서도 효과적으로 동작해야 한다. 초고속으로 동작하는 필터를 하드웨어로 구현하려면 입출력 간의 물리적 지연시간을 클럭의 주기 단위로 나누어서, 시분할하여 순차적으로 처리하는 파이프라인 구조를 가져야 한다. 파이프라인 단계는 많은 비용이 소모되는 레지스터로 구현되므로 파이프라인 단계를 줄이는 것이 바람직하다. 본 논문에서는 입력부터 출력까지의 물리적 지연시간이 데이터의 수에 비례하는 기존의 중간값 필터와 달리, 데이터 수의 로그값에 비례하는 중간값 필터의 구조를 제안한다. 제안한 중간값 필터는 서로 다른 값을 가지는 데이터 집합에서의 중간값은 자신보다 큰 원소의 수와, 작은 원소의 수가 같다는 사실을 이용하며, 버블 정렬 구조에 기반을 둔 중간값 필터에 비해서 같은 동작주파수에서의 게이트 수가 25.3% 줄어든다. 중간값 필터는 잡음제거나 위색제거 등에서도 널리 사용되고 있으므로, 제안한 구조의 중간값 필터는 초고속으로 동작하는 이미지 신호 처리기의 효과적인 구현에 적합하다.

• Archives of design research
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• v.18 no.2 s.60
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• pp.69-78
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• 2005

In order to attract consumers in the advertisement media and large discount marts, there needs to be a strong brandimage with a competitive and distinctive packing design. This study recognized the importance of packing designs and investigated consumers' preference for brands depending on packing designs of drinks in order to draw out consumers' positive attitudes toward the brand. The consumers feel that there are more fruit content in the drink that expresses its ingredients realistically than the drink that expresses its ingredients unrealistically on the packing design. The study also examined the consumers' preference for brands depending on their interests in well-being and the expression in the packing designs. In result, the difference was statistically significant. The study investigated the most preferred container for drinks was glass bottles and the most preferred orange juice was the fruit 100% content. Therefore, the expressions of ingredients of drinks and their interests in well-being were the difference in consumers' preference in brands and purchase intention. It had effects on the fruit content.

• The Journal of the Korea Contents Association
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• v.10 no.8
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• pp.217-226
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• 2010

Reading a photograph is a process of perceiving the image in it. We are able to approach the intention of the photographer only from the sensory material of the image. To make sure how we see the image when we look at a photo, this paper did an experiment with Robert Doisneau's photo, 'Un Regard Oblique'. The hypothesis was set upon the idea of Mary Ann Doane, a pioneer in Gender study. Eye-tracker, Tobii was used to measure the movements and the fixation lengths of the pupils of 44 subjects. From the results of the experiment, it was verified that people look at photographic image in a certain way. At the same time, the gazing strength was differential on every subjects and subject groups.

• Journal of the Korea Society of Computer and Information
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• v.12 no.2 s.46
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• pp.21-28
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• 2007

The facial modeling and animation technology had been studied in computer graphics field. The facial modeling technology is utilized much in virtual reality research purpose of MPEG-4 and so on and movie, advertisement, industry field of game and so on. Therefore, the development of 3D facial model that can do interaction with human is essential to little more realistic interface. We developed realistic and convenient 3D facial modeling system that using a optional facial image only. This system allows easily fitting to optional facial image by using the Korean standard facial model (generic model). So it generates intuitively 3D facial model as controling control points elastically after fitting control points on the generic model wire to the optional facial image. We can confirm and modify the 3D facial model by movement, magnify, reduce and turning. We experimented with 30 facial images of $630{\times}630$ sizes to verify usefulness of system that developed.