| 摘要: | 數位全像術係結合全像術、光資訊處理與數位影像處理技術所建構出的新世代三維造影技術，將可提供未來裸眼式立體實物與圖像的光學三維成像與顯示方式。 圖形處理器具有多重處理單元與平行運算架構能執行大量資料運算與演算法則以突破現有光學與數位全像術的光電界面與資訊處理的瓶頸。 有鑑於此，本計畫研究主題為「圖形處理器平行運算於多視角投影全像三維攝影、處理與顯示之研究」，全程計畫預定以三年期間進行多視角投影數位全像的成像理論、模擬、實驗、系統實作與具體實例應用等相關研究。 第一年度計畫研究重點-多視角投影集成攝影與成像(執行中)，主要將探討多視角投影集成光學攝影方法與架構，並應用之於立體實物與圖像的三維成像與數位顯示之可行性研究。 目前，已初步完成多視角投影數位全像攝影系統設計及其系統架構之電腦模擬與光學攝影實驗工作；第二年度計畫研究重點-即時數位全像集成攝影與光學重建，主要在探討以圖形處理器平行運算於數位全像三維資訊處理，並利用空間光調制器以執行即時的光學集成攝影、重建與影像顯示。 同時，將結合第一年度多視角投影集成攝影研究工作以發展出即時三維攝影與光學顯示技術與系統；第三年度計畫研究重點 -彩色數位全像多視角投影攝影與影像重建，主要在探討使用多波長光源於數位全像三維攝影之光學記錄與影像重建技術，並應用於多視角投影集成攝影系統之設計、製作及三維影像重建與顯示。 本計畫將嘗試利用多波長與白光光源方式以建構彩色數位全像多視角投影集成攝影與顯示技術與系統。 預期經由本計畫之全程執行其研究工作不僅將建構出前瞻性數位全像即時三維攝影、處理與顯示系統，並能開拓光-電訊號處理跨領域研究工作與應用範疇。
Digital holography (DH), integrating holography, optical information processing and digital image processing into a new modality, is one of the most attractive techniques for next-generation three-dimensional (3-D) imaging and display with naked eyes. Graphics processing unit (GPU) is implemented with numerous stream processors and memories in parallelism computing architecture to accelerate the mass data processing and intensive computation, and thus can play an information platform between optics and digital holography. The main objective of this study is to realize an advanced real-time digital holographic three-dimensional imaging system based on GPU computation. Our proposal entitled “A study on graphic process unit computing in multi-viewpoint-projection holographic three-dimensional imaging, processing and display” , which will launch a three-year research program and focus on the GUP-based digital holography and related theories, methodology, computer simulation, experiments, system design, implementation etc.. We have conducted the first-year project, which is mainly devoted to investigate the 3-D image capturing approaches and architectures using multi-viewpoint-projection (MVP) integral imaging technique. The first-year project will concentrate to build up a MVP integral photography platform and computation environment for 3-D capturing and numerical image reconstruction. Computer simulation and experiments were conducted for designing multi-viewpoint-projection integral photography system and the preliminary results show the justification of the proposal approach. The second-year project focuses on real-time MVP digital holographic integral imaging and optical reconstruction, which will be implemented by GPU computation and spatial light modulators (SLMs) to perform the optical realization. Moreover, the study will continue and integrate the preceding works of MVP imaging platform into a real-time 3-D capturing and optical imaging system. The three-year project emphasizes the design and implementation of a color MVP digital holographic integral imaging and display, which is proposed to use multi-wavelength lasers and white-light source for holographic three-dimensional recording and optical reconstruction. In this stage we will also try to use incoherent holography for performing color MVP of 3-D object and imaging. At the end of this program, we expect to develop the GPU-based real-time digital holographic 3-D imaging, processing and display techniques and systems, which might push holography out of laboratory and contribute to the fields of digital image processing, information optics and related interdisciplinary studies and applications in near future. |
