| 摘要: | 動態三維造影在結合即時三維攝影、資訊處理與全像顯示等光-電跨領域技術整合 而建構出的新世代三維造影與顯示技術，將提供未來裸眼式立體實物與圖像的真實而即 時三維成像與顯示方式。運用圖形處理器所具有的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電腦資訊轉換與傳輸間的光-電界面與資 訊處理瓶頸。有鑑於此，本計晝研究主題為「動態三維取像、處理及其全像顯示之研 究」，全程計晝預定以三年期間進行結構光投影全場攝影、資訊處理與電腦全像顯示相 關理論、計算、模擬、實驗與系統實作等相關研究工作。第一年度計畫研究重點-結構 光投影三維成像與全場數位顯示，主要將探討結構光投影成像之光學攝影方法與架構， 並應用之於立體實物與圖像的三維表面輪廓成像及其全場數位顯示研究。同時，將運 用多重視角三維影像對位與融合技術以達成全景影像重建與數位顯示功能；第二年度計 畫研究重點-即時條紋圖像分析與處理，主要在探討以圖形處理器平行運算於探討結合 結構光條紋編碼與條紋傅式轉換分析法之單次曝光攝影方法與架構以進行立體實物/圖 像之即時三維攝影與記錄，並將運用高效能條紋壓縮方法進行編碼條紋壓縮與傳輸、分 析及其三維影像重建工作。同時，將結合第一年度所研發結構光投影全場攝影技術與 系統以發展出即時條紋圖像分析與處理軟硬體方式以期應用於下年度計晝内所需的動 態三維顯示功能；第三年度計畫研究重點-動態電腦全像三維顯示，主要在利用電腦全 像技術將三維數位影像轉換為二維電腦全像片，並以光學與矽基液晶空間光調制器重建 出真實的三維光學影像。同時，將運用計晝内上年度所發展的即時結構光三維成像技 術配合電腦全像術與矽基空間光調制器陣列的光學編碼方式以建構出嶄新的動態電腦 全像三維顯示系統。預期經由本計晝之全程執行其研究工作不僅將建構出前瞻性動態 三維立體實物與圖像之即時三維攝影、處理與顯示系統，並能開拓電腦與光學科技間訊 號處理跨領域研究工作與應用範疇。
Three-dimensional (3-D) imaging of dynamic moving object, integrating real-time 3-D photography, information processing and holographic display 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 informatics. The main objective of this study is to realize an advanced real-time three-dimensional imaging and display system based on integrating structured light projection, GPU information processing, and computer-generated holography. Our proposal entitled “Studies on dynamic three-dimensional surface imaging, processing, and holographic display”, which will launch a three-year research program and focus on the structured light projection, information processing, computer holography and related theories, methodology, computer simulation, experiments, system design, implementation etc.. The first-year project will concentrate to build up a full-field structured light projection imaging platform and computation environment for 3-D panoramic image capturing, numerical image reconstruction, and digital display. The second-year project focuses on real-time fringe pattern analysis and processing based on GPU parallel computation, which high efficacy coding and compression methods will be investigated for fringe pattern transmission, Fourier analysis and image reconstruction. Further, combining the structured light projection and imaging setup in the 1st-year project, the 2nd-year project will develop a real-time fringe pattern analysis and processing hard/software to apply for dynamic 3-D display in future study. The three-year project emphasizes the design and implementation of dynamic computer-generated holography (CGH) for optical reconstruction, which is proposed to use CGH to convert 3-D digital image into a 2-D hologram and then display on liquid crystal on silicon spatial light modulator (LCoS-SLM) for true 3-D display. In this stage we will also try to integrate the real-time structured light imaging technique, CGH, and optical coding of LCoS-SLM arrays to perform a dynamic computer holographic 3-D display system. At the end of this program, we expect not only to develop the advanced techniques for realizing a true 3-D imaging, processing, and display system, but also it might push dynamic 3-D imaging techniques out of laboratory and contribute to the fields of digital image processing, information optics and related interdisciplinary studies and applications in near future. |
