• Journal of the Optical Society of Korea
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• 제14권4호
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• pp.383-387
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• 2010

The stereoscopic three-dimensional (3D) display provides a 3D image by inducing binocular disparity for the observers who wear special glasses. With the rapid progress in flat panel display technologies, the stereoscopic 3D display is becoming a new benefit-model of the current display industry, and several kinds of commercial stereoscopic 3D products have been released and are attracting people. Nowadays, the motion picture quality of the 3D image becomes as important as resolution or luminance since most of the commercial 3D products are 3D televisions or 3D monitors which are required to display a clear motion 3D image. In this paper, an analysis and simulation of the motion picture quality of stereoscopic 3D image is proposed, and a comparison of the motion picture performance among the current stereoscopic 3D technologies is also provided.

• 방송공학회논문지
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• 제14권5호
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• pp.616-624
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• 2009

본 논문에서는 인물, 배, 풍경 등으로 구성되는 한국 고전화의 3D 입체 Tour-Into-Picture를 제안한다. 기존의 TIP 기법은 2D 영상 또는 동영상을 제공하는 것과는 달리, 제안하는 TIP는 3차원 입체 콘텐츠를 제공한다. 따라서 한 장의 영상 내부를 항해하면서 입체로 시청할 수 있는 특징이 있다. 제안 방법은 첫째 전경 마스크, 배경영상, 및 깊이맵을 생성한다. 다음에는 영상 내부를 항해하면서 투영 영상들을 획득한다. 마지막으로 전경객체에서 발생하는 카드보드효과를 감소시키기 위하여 템플릿 및 로스 텍스처 필터 기반 깊이맵 생성을 새로이 제안한다. 제안 방법을 조선시대의 작품인 신윤복의 '단오풍정'과 김홍도의 '무이귀도'에 적용하였고, 입체 애니메이션으로 제작되어 보다 실감 있는 콘텐츠를 제공한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2009년도 정보 및 제어 심포지움 논문집
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• pp.28-30
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• 2009

This paper describes a 3-DTIP(3-D Tour Into Picture) using depth map for a Korean classical painting being composed of persons and landscape. Unlike conventional TIP methods providing 2-D image or video, our proposed TIP can provide users with 3-D stereoscopic contents. Navigating inside a picture provides more realistic and immersive perception. The method firstly makes depth map. Input data consists of foreground object, background image, depth map, foreground mask. Firstly we separate foreground object and background, make each of their depth map. Background is decomposed into polygons and assigned depth value to each vertexes. Then a polygon is decomposed into many triangles. Gouraud shading is used to make a final depth map. Navigating into a picture uses OpenGL library. Our proposed method was tested on "Danopungjun" and "Muyigido" that are famous paintings made in Chosun Dynasty. The stereoscopic video was proved to deliver new 3-D perception better than 2-D video.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.447-448
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• 2009

In this paper, we propose a system which is a 2D/3D switchable module. The display mode can be s witched by user or content.

• 한국의류학회지
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• 제34권1호
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• pp.14-26
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• 2010

This study investigates the effectiveness of fashion coordination presentation formats when people buy apparel products online. This study conducted an online survey with 595 females who shopped online at the simulated website by a single apparel plan picture (n=189), coordination plane picture (n=187), and 3-D coordination image (n=216). For data analysis, factor analysis, Cronbach's alpha, MANCOVA, ANOVA, Duncan test, correlation analysis, and chi-square are used. The results of this study are: First, the hedonic shopping value was significantly the highest when respondents shopped at a 3-D coordination image shopping mall, the next highest-scored presentation type was the coordination plane picture, and the case of presenting only the single apparel picture was significantly the lowest. The utilitarian shopping value and information shopping value were higher in the coordination plane picture and the 3-D coordination image shopping mall than the single apparel picture. Second, transactions satisfaction was high when respondents shopped at a 3-D coordination image, coordination plane image, and single apparel image in decreasing order.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.1361-1362
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• 2009

We challenge to use reactive mesogen optical elements which can be coated inside LC cell. The reactive mesogens as retarder barrier requirements can be achieved between a high performance 2D mode and a low cross talk stereoscopic 3D mode. The fabrication of a 10.1" diagonal LCD which co-operates with a polarizer to from a parallax barrier, is described. In addition, the parallax barrier of reactive mesogens can easily control in mass production and can thus be coated as extremely LC cell, significantly reducing the thickness of LCD. Finally, we have successed to design a switchable 2D/3D displays using reactive mesogen optical elements which can be achieved 3D displays within glasses.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2016년도 춘계학술대회
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• pp.706-707
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• 2016

본 연구에서는 가상증강현실과 미술의 연계로 가상현실의 세계에서 3D 펜과 같이 그림을 그릴 수 있는 시스템을 기획하고자 한다. 가상의 3D 펜과 HMD, Leap Motion 기기를 이용하여, VR공간의 가상 캔버스에 자신만의 그림 세계를 만들고, 실시간으로 여러 명의 사용자들과 연동하여 함께 그림을 그리고, 저장, 공유할 수 있도록 한다. 여럿이 가상현실 공간을 돌아다닐 수 있기 때문에 협동하여 작품을 만들 수 있는 교육용으로도 사용할 수 있다. 또한 입체적인 것을 설명할 때 중요한 부분을 공간페인팅을 함으로써 2D의 한계를 넘어설 수 있다. 이 시스템은 창의적으로 무언가를 그려내는 것을 3D로 표현하기 때문에 더욱 풍부한 작품이 나올 수 있고 창의력 향상에 도움이 될 것이다.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2009년도 춘계학술발표회 논문집
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• pp.91-94
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• 2009

항공사진촬영은 계획된 노선을 따라 항공기를 조정하여 적절한 위치에서 촬영을 수행하는 작업이다. 특히 3차원 공간데이터 구축을 위하여 사용되는 다각사진촬영시스템의 경우 대형 CCD가 중형 CCD를 사용함으로써 촬영면적이 크지 않아서 적절한 위치에서 촬영이 이루어 지지 않는 경우 충분한 중복도를 확보하지 못하여 외부표정요소 결정에 문제가 발생할 소지가 있다. 따라서, GPS/INS를 이용하여 정확한 항공기의 위치를 결정하여 사전에 계획된 위치에서 촬영을 실시함으로써, 정확한 3차원 공간데이터의 모델링을 수행할 수 있다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 추계종합학술대회 논문집
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• pp.863-866
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• 1998

In this paper, we proposes Moving Picture Compression reducing bit numbers within the block by probability in 3D-DCT considered of temporal axis. From Delta Modification theory for frequency components, bit numbers within the block(4$\times$4) were properly compressed by using the Probability Entropy. At the result for the proposed algorithm, we could find that the values of PSNR for resolution and the compression rate were better than existing methods.

• 로봇학회논문지
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• 제8권3호
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• pp.179-185
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• 2013

In this paper we propose a haptic interaction system that physically represents the underlying geometry of objects displayed in a 2D picture, i.e., a digital image. To obtain the object's geometry displayed in the picture, we estimate the physical transformation between the object plane and the image plane based on homographic information. We then calculate the rotated surface normal vector of the object's face and place it on the corresponding part in the 2D image. The purpose of this setup is to create a force that can be rendered along with the image without distorting the visual information. We evaluated the proposed haptic rendering system using a set of pictures of objects with different orientations. The experimental results show that the participants reliably identified the geometric configuration by touching the object in the picture. We conclude this paper with a set of applications.