• Title/Summary/Keyword: 3D Computer

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Holographic Three-dimensional Computer-Aided Imaging

  • Rosen, Joseph;Abookasis, David
    • 한국정보디스플레이학회:학술대회논문집
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    • 2003.07a
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    • pp.433-436
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    • 2003
  • Recent developments in a new method of holographic computer-aided imaging will be reviewed. Our hologram is computed from angular viewpoints of the observed 3D scene. The recorded data are processed to yield a 2D computer-generated hologram. When this hologram is illuminated properly, a 3D image of the scene is reconstructed.

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3D Garment Construction Using Computer And Validation (컴퓨터를 이용한 3D 의류 원형 제작 및 검증)

  • Ko, Young-Ah;Choi, Hyeon-Sook;Choi, Bong-Ouk;Jeon, In-Yong;Ko, Hyeong-Seok
    • 한국HCI학회:학술대회논문집
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    • 2009.02a
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    • pp.516-520
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    • 2009
  • In garment manufacturing process, making a prototype of a product is a preceding part ahead of mass production. However, it takes up a lot of trial and error, let alone the expense in the past manufacturing system. In this paper we introduce the process which can replace the past one with using recently developed computer graphics technique. We also demonstrate this method is valid on a variety of clothes compared to the real experiments. In this process, a designer can make a garment, simulate it in 3D computer system, and easily fix the problems before finalizing a prototype.

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3D Stereoscopic Navigation of Buildings Considering Visual Perception (시각적 인지를 고려한 건축물의 3D 스테레오 내비게이션)

  • Shin, Il-Kyu;Yoon, Yeo-Jin;Choi, Jin-Won;Choi, Soo-Mi
    • Journal of the Korea Computer Graphics Society
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    • v.18 no.2
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    • pp.63-72
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    • 2012
  • As BIM(Building Information Modeling) is widely used in the construction process the need for exploring building models realistically is also growing. In this paper, we present a 3D stereoscopic navigation method for virtual buildings considering virtual perception. We first find out factors that may cause virtual discomfort while navigating stereoscopic building models, and then develop a method for automatically adjusting the range of virtual camera separation. In addition, we measure each user's JND(Just Noticeable Difference) in depth to adjust virtual camera separation and movement. The presented method can be used for various architectural applications by creating user-customized 3D stereoscopic contents.

A Study on the 3D Modeling Curriculum for the Education Vulnerable (교육 취약계층을 위한 3D 모델링 커리큘럼에 관한 연구)

  • Kim, Hyun-Ah;Kim, Jae-Woong;Lee, Yun-Yeol;Chae, Yi-Geun;Kim, Dong-Hyun
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2022.07a
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    • pp.115-116
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    • 2022
  • 소프트웨어 교육은 현대사회의 필수 교육으로서, 초등학교부터 교육을 접할 수 있도록 교육정책 및 지원 등이 강화되고 있는 실정이다. 그러나 코로나 팬데믹 이후 소프트웨어 교육 체험 활동 중단에 따른 비대면 교육의 한계로 교육 취약 계층과 영재 교육과의 격차가 심화되었다는 우려의 목소리가 크기에 격차 해소에 대한 대책이 필요하다는 의견과, 지역별 취약 계층에 대한 계획이 없는 교육 제도의 변화를 요구하고 있다. 따라서 에듀테크와 통합된 교육 콘텐츠의 중요성이 부각되고 있다. 본 논문에서는 큐브 형태의 모델링이 가능한 3D 모델링 프로그램인 타다크래프트를 기반으로 교육 소외 계층도 손쉽게 접근할 수 있는 교육 커리큘럼을 제안한다. 3D 모델링을 구현함으로써, 학습자들은 학습에 대한 성과와 흥미를 획득할 수 있고, 공간 확장 능력을 배양할 수 있을 것으로 기대된다.

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3D Object based Reuse Service System Design and Implementation (3D 객체기반의 재사용 서비스 설계 및 구현)

  • Kang, Mi-Young;Lee, Jun-Young;Bum, Jung-Ung;Nam, Ji-Seung
    • Proceedings of the Korea Information Processing Society Conference
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    • 2005.11a
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    • pp.237-240
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    • 2005
  • 본 논문에서는 이미 만들어진 원본 시나리오에 따라 3D 모델들을 합성시키는데 목적을 두었을 뿐만 아니라, 사용자의 다양한 파생 컨텐츠 요구에 대응하기 위해 기존의 시스템과 달리 제작자가 아닌 일반 사용자가 원본 시나리오에 존재하는 3D 객체들을 재사용하여 원하는 시나리오를 다양하게 생성해 낼 수 있는 3D 객체 기반의 재사용 서비스 시스템을 설계하고 구현하였다.

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Hologram Generation of 3D Objects Using Multiple Orthographic View Images

  • Kim, Min-Su;Baasantseren, Ganbat;Kim, Nam;Park, Jae-Hyeung
    • Journal of the Optical Society of Korea
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    • v.12 no.4
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    • pp.269-274
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    • 2008
  • We propose a new synthesis method for the hologram of 3D objects using incoherent multiple orthographic view images. The 3D objects are captured and their multiple orthographic view images are generated from the captured image. Each orthographic view image is numerically overridden by the plane wave propagating in the direction of the corresponding view angle and integrated to form a point in the hologram plane. By repeating this process for all orthographic view images, we can generate the Fourier hologram of the 3D objects.

3D-QSAR of Non-peptidyl Caspase-3 Enzyme Inhibitors Using CoMFA and CoMSIA

  • Lee, Do-Young;Hyun, Kwan-Hoon;Park, Hyung-Yeon;Lee, Kyung- A.;Lee, Bon-Su;Kim, Chan-Kyung
    • Bulletin of the Korean Chemical Society
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    • v.27 no.2
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    • pp.273-276
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    • 2006
  • Three dimensional quantitative structure-activity relationship studies for a series of isatin derivatives as a nonpeptidyl caspase-3 enzyme inhibitor were investigated using comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA). The first approach of non-peptidyl small molecules by 3D QSAR may be useful in guiding further development of potent caspase-3 inhibitors.

Tracking of 2D or 3D Irregular Movement by a Family of Unscented Kalman Filters

  • Tao, Junli;Klette, Reinhard
    • Journal of information and communication convergence engineering
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    • v.10 no.3
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    • pp.307-314
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    • 2012
  • This paper reports on the design of an object tracker that utilizes a family of unscented Kalman filters, one for each tracked object. This is a more efficient design than having one unscented Kalman filter for the family of all moving objects. The performance of the designed and implemented filter is demonstrated by using simulated movements, and also for object movements in 2D and 3D space.

Stereoscopic 3D Model Viewer for Battlefield Visualization (전투공간 시뮬레이션 가시화를 위한 스테레오 3D 모델 뷰어)

  • Park, Hye-Jin;Park, Ji-Young;Kim, Myoung-Hee
    • Proceedings of the Korean Information Science Society Conference
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    • 2012.06c
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    • pp.335-337
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    • 2012
  • 전투공간 시뮬레이션 결과를 가시화할 뿐 아니라 시나리오 가시화 중에 사용자가 선택한 엔티티의 상세한 관찰을 제공하기 위해 스테레오 3D 모델 뷰어를 개발하여 가시화 시스템의 프로토타입을 구성하였다. 전투공간 가시화를 위해서는 가시화 스프트웨어인 SIMDIS를 사용하였다. 사용자는 시뮬레이션 가시화 스크린 상에서 엔티티를 선택할 수 있으며, 이 엔티티의 자세한 관찰은 스테레오 3D 모델 뷰어에 가시화 된다. 모델 뷰어는 사용자에게 엔티티 관찰 시 몰입감과 인지도를 향상시키기 위하여 헤드 트래킹 기술을 적용하였다. 사용자의 위치를 추적하기 위해서는 깊이 카메라를 이용하였으며, 획득한 깊이 영상을 통해 실시간 사용자 헤드 트래킹을 적용하였다. 구현된 시스템은 SIMDIS를 이용한 전투공간 시뮬레이션 가시화와 스테레오 3D 뷰어를 각각 가시화하기 위하여 2D 디스플레이와 3D TV를 사용하였다.

A Study on the Establishment of a Production Pipeline Imported 3D Computer Graphics for Clay Characters (3D 컴퓨터그래픽을 도입한 클레이 캐릭터 제작 공정 개발에 관한 연구)

  • Kim, Jung-Ho
    • Journal of Korea Multimedia Society
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    • v.11 no.9
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    • pp.1245-1257
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    • 2008
  • The establishment of a production pipeline imported 30 computer graphics is suggested in this paper to improve the efficiency of existing production pipeline of clay animation. The point is that the process of building clay characters that remains labor intensive among the existing procedures is replaced by the process of creating computer generated characters. In order to create characters out of clay by means of 30 computer graphics, a diffuse map and displacement map are made of an oil-based clay according to the UVW coordination of polygon modeling, which is the same color and kind of clay used to make a clay character. In addition, a panoramic HDRI recording system is developed to record the lighting information of shooting environment for miniature sets, which is imported in 3D computer graphic tools as digital light source. On account of the new production pipeline, a hyper realistic rendering image can be produced, and at the same time it improves the traditional pipeline of stop motion animation that is know-how based procedure of a complete artist by the engineering approach to the automatic process.

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