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Design and Implementation of an Approximate Surface Lens Array System based on OpenCL

OpenCL 기반 근사곡면 렌즈어레이 시스템의 설계 및 구현

  • 김도형 (충북대학교 디지털정보융합학과) ;
  • 송민호 (충북대학교 디지털정보융합학과) ;
  • 정지성 (충북대학교 정보산업공학과) ;
  • 권기철 (충북대학교 정보통신공학부) ;
  • 김남 (충북대학교 정보통신공학부) ;
  • 김경아 (충북대학교 의공학과) ;
  • 류관희 (충북대학교 소프트웨어학과)
  • Received : 2014.07.23
  • Accepted : 2014.09.02
  • Published : 2014.10.28

Abstract

Generally, integral image used for autostereoscopic 3d display is generated for flat lens array, but flat lens array cannot provide a wide range of view for generated integral image because of narrow range of view. To make up for this flat lens array's weak point, curved lens array has been proposed, and due to technical and cost problem, approximate surface lens array composed of several flat lens array is used instead of ideal curved lens array. In this paper, we constructed an approximate surface lens array arranged for $20{\times}8$ square flat lens in 100mm radius sphere, and we could get about twice angle of view compared to flat lens array. Specially, unlike existing researches which manually generate integral image, we propose an OpenCL GPU parallel process algorithm for generating real-time integral image. As a result, we could get 12-20 frame/sec speed about various 3D volume data from $15{\times}15$ approximate surface lens array.

Keywords

3D Display;Approximate Surface Lens Array;Integral Imaging;Volume Data;OpenCL

Acknowledgement

Supported by : 한국연구재단

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