제 목 Content-Adaptive 3D display : Optimizing Dual-Layer 3D Displays using Low-Rank Light Field Factorization

강 사 김윤희 박사

소 속 삼성전자 종합기술원 전문연구원

시 간 2011년 8월 12일 (금요일) 오후 1시

장 소 제1 신공학관 301동 1112호

Abstract

We optimize automultiscopic displays built by stacking a pair of modified LCD panels. To date, such dual-stacked LCDs have used heuristic parallax barriers for view-dependent imagery: the front LCD shows a fixed array of slits or pinholes, independent of the multi-view content. While prior works adapt the spacing between slits or pinholes, depending on viewer position, we show both layers can also be adapted to the multi-view content, increasing brightness and refresh rate. Unlike conventional barriers, both masks are allowed to exhibit non-binary opacities. It is shown that any 4D light field emitted by a dual-stacked LCD is the tensor product of two 2D masks. Thus, any pair of 1D masks only achieves a rank-1 approximation of a 2D light field. Temporal multiplexing of masks is shown to achieve higher-rank approximations. Non-negative matrix factorization (NMF) minimizes the weighted Euclidean distance between a target light field and that emitted by the display. Simulations and experiments characterize the resulting content-adaptive parallax barriers for low-rank light field approximation.

강사이력

1998.3 ~ 2003.2 서울대학교 전기공학부 학사

2003.3 ~ 2008.8 서울대학교 전기.컴퓨터공학부 박사

2008.9 ~ 2009.9 서울대학교 반도체공동연구소 박사후 연구원

2010.1 ~ 2011.2 MIT Media Lab, Postdoctoral researcher