• 제목/요약/키워드: Multiview display

검색결과 44건 처리시간 0.027초

Characteristics of Viewing Zone in Multiview 3 Dimensional Imaging Systems

  • Son, Jung-Young;Saveljev, Vladmir V.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2003년도 International Meeting on Information Display
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    • pp.427-432
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    • 2003
  • In contact-type multiview 3 dimensional imaging systems, the optimum design parameters are not easily found because of difficulty in determining the size of viewing zone. Two factors related with the viewing zone, such as different view image patching and the widths of the viewing regions are discussed to explain the difficulty.

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Crosstalk reduction in tabletop multiview display with fog screen

  • Jeon, Hosung;Lim, Sungjin;Jung, Minwoo;Yoon, Junghoo;Park, Changhwan;Seok, Junho;Yu, Ji-man;Hahn, Joonku
    • ETRI Journal
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    • 제44권4호
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    • pp.686-694
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    • 2022
  • Fog screens offer a great advantage to be used as scattering screens in three-dimensional displays. In the absence of a fixed rigid form, fog screens work as screens without any physical obstruction. The density of water droplets can be regulated to adjust the screen's transparency and scattering level. This study proposes a method for crosstalk reduction between adjacent viewing windows by decreasing the divergence of view of the projector, with concentration lenses. By applying the Scheimpflug principle, we also reduce the keystone effect, which occurs when the fog screen is slanted with respect to the optical axis. In this study, we have realized a tabletop multiview fog display without any structures on the table and established that the proposed method is feasible for decreasing crosstalk effectively.

Implementation of Object-based Multiview 3D Display Using Adaptive Disparity-based Segmentation

  • Park, Jae-Sung;Kim, Seung-Cheol;Bae, Kyung-Hoon;Kim, Eun-Soo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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    • pp.1615-1618
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    • 2005
  • In this paper, implementation of object-based multiview 3D display using object segmentation and adaptive disparity estimation is proposed and its performance is analyzed by comparison to that of the conventional disparity estimation algorithms. In the proposed algorithm, firstly we can get segmented objects by region growing from input stereoscopic image pair and then, in order to effectively synthesize the intermediate view the matching window size is selected according to the extracted feature value of the input stereo image pair. Also, the matching window size for the intermediate view reconstruction (IVR) is adaptively selected in accordance with the magnitude of the extracted feature value from the input stereo image pair. In addition, some experimental results on the IVR using the proposed algorithm is also discussed and compared with that of the conventional algorithms.

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체적 홀로그램을 이용한 무안경 다안식 3D 디스플레이 시스템 (Autostereoscopic Multiview 3D Display System based on Volume Hologram)

  • 이승현;이상훈
    • 한국컴퓨터산업학회논문지
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    • 제2권12호
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    • pp.1609-1616
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    • 2001
  • 본 논문에서는 체적 홀로그램을 이용한 무안경 3차원 디스플레이 시스템을 제안하였다. 디스플레이 평면에서 다시점 스테레오 영상을 관찰할 수 있도록 각 다중화된 기준파와 물체파를 간섭시킨 후 격자 패턴을 체적홀로그램에 기록하였다. 디스플레이 하고자 하는 다안식 영상으로 구성된 물체파가 시분할적으로 update 되며 광굴절 매질에 입사될 때 브래그 조건을 만족시키면, 출력 평면에서는 회절된 영상으로부터 다안식 3차원 영상을 관찰할 수 있다. 본 시스템을 이용함으로써 시점의 증가에 따른 해상도의 저하가 없는 고해상 다시점 3차원 디스플레이를 구성할 수 있다.

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Research and Development of 3 Dimensional Imaging Media Technology in Korea

  • Son, Jung-Young;Chun, You-Seek
    • 한국방송∙미디어공학회:학술대회논문집
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    • 한국방송공학회 1998년도 Proceedings of International Workshop on Advanced Image Technology
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    • pp.45-50
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    • 1998
  • Several 3 dimensional image display systems were recently developed in Korea. These are a holographic video system based on pulse laser illumination, ad 8-view 3 dimensional image system capable of displaying computer generated 3 dimensional images and multiview 3 dimensional imaging system based on moving aperture and holographic screens of both transmission and reflection types. All these systems require no special glasses to watch and works impressively.

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다시점 3차원 영상 시스템에서 영상혼합 (Image Mixing in Multiview 3 Dimensional Imaging Systems)

  • 김신환;손정영
    • 한국멀티미디어학회논문지
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    • 제11권2호
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    • pp.175-181
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    • 2008
  • 접촉식 다시점 3차원 영상시스템에서 관찰되는 이미지의 품질을 수치화 하기 위한 2 차원 화질함수가 고안되고 그 유효성은 실험적으로 증명되었다. 이 수식은 어떤 시 영역에서 영상 패널을 보았을 때 인식되는 영상이 몇 개와 어떤 시점영상의 혼합으로 이루어 지는가를 계산할 수 있게 한다. 계산된 영역에서 시청자의 눈에 투사되는 영상은 시스템 영상패널내의 위치에 따라 투사되는 시점영상들이 달라진다는, 수식의 예측이 실험적으로 증명되었다.

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Enhancing Depth Accuracy on the Region of Interest in a Scene for Depth Image Based Rendering

  • Cho, Yongjoo;Seo, Kiyoung;Park, Kyoung Shin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제8권7호
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    • pp.2434-2448
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    • 2014
  • This research proposed the domain division depth map quantization for multiview intermediate image generation using Depth Image-Based Rendering (DIBR). This technique used per-pixel depth quantization according to the percentage of depth bits assigned in domains of depth range. A comparative experiment was conducted to investigate the potential benefits of the proposed method against the linear depth quantization on DIBR multiview intermediate image generation. The experiment evaluated three quantization methods with computer-generated 3D scenes, which consisted of various scene complexities and backgrounds, under varying the depth resolution. The results showed that the proposed domain division depth quantization method outperformed the linear method on the 7- bit or lower depth map, especially in the scene with the large object.

A Wide-field-of-view Table-ornament Display Using Electronic Holography

  • Daerak Heo;Hosung Jeon;Sungjin Lim;Joonku Hahn
    • Current Optics and Photonics
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    • 제7권2호
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    • pp.183-190
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    • 2023
  • Three-dimensional (3D) displays provide a significant advantage over traditional 2D displays by offering realistic images, and table-style displays in particular are ideal for generating 3D images that appear to float above a table. These systems are based on multiview displays, and are typically operated using temporal or spatial multiplexing methods to expand the viewing zone (VZ). The VZ is an expanded space that results from merging the sub-viewing zones (SVZs) from which an individual view is made. To increase the viewing angle, many SVZs are usually required. In this paper, we propose a table-ornament electronic holographic display that utilizes 3f parabolic mirrors. In holography, the VZ is not simply expanded but synthesized from SVZs to implement continuous motion parallax. Our proposed system is small enough to be applied as a table ornament, in contrast to traditional tabletop displays that are large and not easily portable. By combining multiview and holographic technologies, our system achieves continuous motion parallax. Specifically, our system projects 340 views using a time-multiplexing method over a range of 240 degrees.

변이 기반 다시점 영상의 인식 깊이감 조절 (Disparity-based Depth Scaling of Multiview Images)

  • 조철용;김만배;엄기문;허남호;김진웅
    • 방송공학회논문지
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    • 제13권6호
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    • pp.796-803
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    • 2008
  • 본 논문에서는 사용자에게 보다 실감있고, 사용자가 선호하는 다시점 3D 영상의 3D 입체감을 제공할 수 있는, 다시점 3D 동영상의 인식 깊이감을 조절하는 기법을 제안한다. 카메라 배열을 변경하는 기존의 방법들과 달리, 제안한 기법은 사용자가 요청하는 깊이 범위의 스케일링을 활용하기 위하여 영상의 깊이 데이터를 활용한다. 다시점 영상 및 해당 시점의 깊이 영상을 입력받아 각 화소의 변이로 변환하고, 각 화소의 변이를 조절함으로써 인식되는 깊이감을 조절하게 된다. 제안 방법은 다시점 카메라로부터 획득한 다시점 영상의 처리가 가능하며, 또한 2-시점 입체영상부터 다시점 영상까지 적용이 가능하다. 실험에서는 제안한 방법을 통하여 깊이감이 조절된 다시점 동영상을 다시점 3D 모니터로 시청하였을 때, 깊이감이 사용자가 선호하는 깊이에 따라서 스케일되는 것을 DSCQS(Double Stimulus Continuous Quality Scale)으로 확인하였다.