• 반도체디스플레이기술학회지
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• 제20권4호
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• pp.6-9
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• 2021

The 3D industry is drawing attention for its applications in various markets, including architecture, media, VR/AR, metaverse, imperial broadcast, and etc.. The current feature of the architecture we are introducing is to make 3D models more easily created and modified than conventional ones. Existing methods for generating 3D models mainly obtain values using specialized equipment such as RGB-D cameras and Lidar cameras, through which 3D models are constructed and used. This requires the purchase of equipment and allows the generated 3D model to be verified by the computer. However, our framework allows users to collect data in an easier and cheaper manner using cell phone cameras instead of specialized equipment, and uses 2D data to proceed with 3D modeling on the server and output it to cell phone application screens. This gives users a more accessible environment. In addition, in the 3D modeling process, object classification is attempted through deep learning without user intervention, and mesh and texture suitable for the object can be applied to obtain a lively 3D model. It also allows users to modify mesh and texture through requests, allowing them to obtain sophisticated 3D models.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1525-1528
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• 2006

So far, monostable and bistable LCD modes have independently been researched and developed. We introduce a novel liquid crystal display device that and be operated ad memory mode ad well ad dynamic mode. This device has a unique texture of splay, ${\pi}$ twist and bend states with applied voltages and is operated as a memory mode or dynamic mode by selective switching of two states among them. We also demonstrate electro-optical characteristics of the transmissive dual mode.

• 한국항해항만학회지
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• 제40권6호
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• pp.369-374
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• 2016

최근 스마트 컴퓨팅 기술(IEEE, 2016)의 급격한 발달에 따라 3차원 항해시스템에 대한 연구가 활발해지고 있으며, 이를 적용한 상용 3차원 항해 시스템 및 3D VTS 시스템이 등장하고 있다. 비록 3차원 기술이 널리 알려지고 사용되고 있다 하더라도, 베일에 쌓인 숨겨진 코드에 대한 내용은 밝혀진 바가 없다. 본 연구의 목적은 S-52 전자해도 표현 표준을 만족할 수 있도록, 3차원 디스플레이 환경 하에서 전자해도 객체를 표현하는 기초적인 접근 방법을 보이는 것이다. 향후에 스마트폰 및 패드와 같은 모바일 기기에서도 사용하고, 웹기반의 선박관제시스템에도 사용할 수 있도록 OpenGL ES를 이용하여 3D ENC Viewer를 개발하였다. 특히 면객체 삼각화(area object triangulation), 텍스처 매핑에 의한 복합선 표현, 폴리곤 패턴 채우기, 심볼 작도 등에 대해 자세히 설명한다. 삼각화된 공간정보를 포함하는 시스템전자해도(System ENC)의 파일크기와 디스플레이 속도의 상관관계를 검토하여 성능을 검증하였다.

• 대한가정학회지
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• 제42권6호
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• pp.111-121
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• 2004

This study focused on the development of creative materials by applying tapestry to produce original and high-grade dresses with consideration the modems' tendency to place high value on personal taste and style. The development remained sensitive to current trends and attempted to expand into high value-added dresses. Materials in modem fashion design, as a basis of the fashion industry, can lead to a current of new fashion and produce novel and creative ideas by stimulating the designers' creativity. Designers can diversely express a form according to their intention, since tapestry allows the expression of various feelings of texture and forms according to the combination mode of technique, structure and materials on a basic plane. Moreover, tapestry encrourages the development of varied designs because it can effectively display the texture and color of a textile surface through the careful selection of materials even under the same technique. Tapestry can apply forms similar to a textile's basic structure to fashion design and can create high added value with the merit of being 'handmade'.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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• pp.338-341
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• 2005

We have examined the aspects of the orientational ordering deformation of ferroelectric liquid crystal during bending performance of plastic substrate by analyzing the polarizing optical microscope texture and the birefringence of the cell. Striped texture becomes more prominent as the radius of curvature of substrate gets smaller. The optic axis of the adjacent stripes domain was not same and the relative angle between them becomes larger as the radius of curvature gets smaller. Especially, the optic axis rotation angle of one domain was lager than the other and the liquid crystal molecules in each domain became more coherent. In addition, the birefringence data with obliquely incident light shows the polar direction shift of liquid crystal molecule by bending performance.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권11호
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• pp.4413-4425
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• 2020

In order to completely record all the information of realistic scenes, high dynamic range (HDR) images have been widely used in virtual reality, photography and computer graphics. A simple yet effective tone mapping method based on total variation is proposed so as to reproduce realistic scenes on low dynamic range (LDR) display devices. The structural component and texture component are obtained using total variation model in logarithmic domain. Then, the dynamic range of the structural component is compressed with an adaptive arcsine function. The texture component is processed by Taylor series. Finally, we adjust the saturation component using sigmoid function and restore the color information. Experimental results demonstrate that our method outperforms existing methods in terms of quality and speed.

• 반도체디스플레이기술학회지
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• 제7권4호
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• pp.13-18
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• 2008

This paper explores a content-based image retrieval framework with relevance feedback based on genetic algorithm (GA). This framework adopts GA to learn the user preferences using the similarity functions defined for all available descriptors. The objective of the GA-based learning methods is to learn the user preferences using the similarity functions and to find a descriptor combination function that best represents the user perception. Experiments were performed to validate the proposed frameworks. The experiments employed the natural image databases and color and texture descriptors to represent the content of database images. The proposed frameworks were compared with the other two relevance feedback methods regarding effectiveness in image retrieval tasks. Experiment results demonstrate the superiority of the proposed method.

• 대한기계학회논문집B
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• 제37권6호
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• pp.545-550
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• 2013

본 논문은 정전기력을 이용한 마찰력 변조를 이용하여 손끝을 통한 촉각정보의 입출력을 동시 구현하는 소자를 제안하였다. 기존의 촉각소자들이 촉각정보의 입력 및 출력을 개별적으로 구현한 것에 비해 본 연구는 손끝의 수직/수평 방향 동작 인식과 질감 구현을 동시에 구현하였다는 점에서 차별성을 가진다. 실험분석을 통해 검증한 손끝 동작 인식기능은 수직방향의 클릭의 경우 0.146nF/$40{\mu}m$, 수평방향의 경우 0.09nF/$750{\mu}m$의 정전용량 변화를 통해 인식 가능하였으며, 질감 구현의 경우 정전기적 인력을 통해 마찰력을 32~152mN의 범위에서 제어할 수 있음을 확인하였다. 교류전압을 이용한 수평적 진동은 60V, 3Hz에서 최대 128.1mN의 마찰력 변조를 구현하였으며, 이는 기존 연구 대비 32% 향상을 보여준다. 본 연구는 손끝에서 정보의 입출력을 동시 구현하여 정보기기의 촉각인터페이스에 적용 가능하다.

• 한국융합학회논문지
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• 제3권1호
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• pp.13-17
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• 2012

본 논문에서는 기하학적 단서인 소실선과 텍스처를 이용하여 깊이 지도를 생성하는 방법을 제안한다. 소실선은 영상 내 존재하는 평행한 직선들에 의해 생성되는 것으로 영상에서 Gabor Filter를 통해 특정 각도의 경계를 추출하고 이를 허프 변환을 통해 직선을 추출하여 소실선을 검출해낸다. 검출된 소실선에 따라 초기 깊이 지도를 생성하고 텍스처 단서인 슈퍼 픽셀을 이용한 상대적 깊이 지도를 결합하여 최종 깊이 지도를 생성한다. 소실선을 이용한 초기 깊이지도와 슈퍼 픽셀을 이용한 상대적 깊이 지도를 결합함으로써 보다 신뢰성 있는 깊이 지도가 생성되었다.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.763-767
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• 2006

Directionally solidified Si films obtained via line-scan SLS can lead to attainment of high-mobility TFTs. The crystallographic texture of the resultant materials can potentially be an important factor because the spatial details thereof may impact the overall device uniformity. Here, we present EBSD analysis of these materials that reveal the existence of relatively large domains with different textures and differing amounts of defects, which in turn, may adversely affect device uniformity.