The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Implementation of Multiview Stereoscopic 3D Display System using Volume Holographic Lenticular Sheet

VHLS 광학판 기반의 다시점 스테레오스코픽 3D 디스플레이 시스템의 구현

  • Published : 2004.05.01
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Abstract

In this paper, a new multiview stereoscopic 3D display system using a VHLS(volume holographic lenticular sheet) is suggested. The VHLS, which acts just like an optical direction modulator, can be implemented by recording the diffraction gratings corresponding each directional vector of the multiview stereoscopic images in the holographic recording material by using the angularly multiplexed recording property of the conventional volume hologram. Then, this fabricated VHLS is attached to the panel of a LCD spatial light modulator and used to diffract each of the multiview image loaded in a SLM to the corresponding spatial direction for making a 3D stereo view-zone. Accordingly, in this paper, the operational principle and characteristics of the VHLS are analyzed and an optimized 4-view VHLS is fabricated by using a commercial photopolymer. Then, a new VHLS-based 4-view stereoscopic 3D display system is implemented. Through some experimental results using a 4-view image synthesized with adaptive disparity estimation algorithm, it is suggested that implementation of a new VHLS-based multiview stereoscopic 3D display system can be possible.

본 논문에서는 VHLS 광학판 기반의 새로운 다시점 3D 디스플레이 시스템을 제시하였다. 즉, VHLS 광학판을 체적 홀로그램의 각 다중화 기록 특성을 이용하여 다시점 영상의 방향벡터를 회절격자 형태로 기록한 일종의 광방향 변조기로 제작한 다음, 제작된 VHLS을 LCD 공간광변조기에 부착되어 패널에 입력되는 다시점의 스테레오 영상을 각 시점에 해당하는 특정방향으로 분리해 줌으로써 다시점 3D 디스플레이 시스템을 실현하였다. 또한, 본 논문에서는 VHLS 광학판의 원리와 특성을 분석한 다음 상용 포토폴리머를 이용하여 최적화된 4시점의 VHLS 광학판을 설계 제작하고 이를 이용하여 4시점의 스테레오스코픽 3D 디스플레이 시스템을 구현하였다. 그리고 적응적 변위 추정 알고리즘으로 합성된 4시점의 테스트 영상을 이용한 광학실험을 통해 VHLS 기반의 다시점 3D 디스플레이 시스템의 구현 가능성을 제시하였다.

Keywords

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