隨著電子技術的快速發展，科學家們發展出許多可攜式影像擷取、顯示及互動之方法與系統，時至今日早已從筆記型電腦、平板電腦進步到智慧型手機。雖然這些技術已有極佳的表現，但人類追求更身歷其境的腳步卻不曾停竭。在這項研究工作中，提出了一套完整低成本可擕式多視點多媒體系統，包含多視點影像擷取、顯示和互動三個子系統。我們有信心這項研究工作將對相關研究社群產生一定的影響力，同時改變人們記錄及重現精采生活的方式。
在取像子系統中，本研究提出一種手持多視點攝影機陣列及對應的使用者介面。所設計的手持多視點相機陣列可快速改變各種排列方式，包括外擴、平行及匯聚類型。提出之演算法能夠有效地對齊多個視點圖像，因此該系統非常適用於如全景視頻拼接技術、自動立體顯示技術、子彈時間視覺特效及三維場景重建等應用。
在顯示子系統中，本研究提出一種可攜式圓柱形360 度之自動立體顯示系統。該系統由三部分組成：光學結構(使圓柱螢幕上正確顯示背投影影像) 、投影影像轉換的工作流程(矯正影像變形和生成多視點圖像) 及360 度運動檢測模組(用於確認使用者位置並提供對應的視圖)。而基於提出之設計，只需一台市售微型投影機投影於圓柱形螢幕，使用者不需要佩戴特殊的眼鏡，只需透過附加於柱狀幕上的特殊厚光柵片觀賞，即可明顯提昇深度感知(立體感)。經使用者研究後證實提出之方法提供了令人滿意的深度知覺(包括雙目視差、光影分佈和線性透視) ，在不同的觀看距離和角度下皆沒有明顯不適。
在互動子系統中，本研究提出一種利用變形錯覺產生類全像式影像之桌面互動系統。提出之系統可透過高效臉部特徵比對演算法得知使用者視點並使其同步產生變形影像顯示於平躺之螢幕上，彷彿虛虛擬物件站立於螢幕表面。使用者觀賞影像不需配戴任何額外裝置即可有極佳的立體感受。此外，更進一步利用紅外線攝影機來辨識手勢，令使用者可與虛擬物件直接互動。
本研究所提出之各項多媒體系統皆具有方便使用、低生產成本，高可攜性和移動性等優點。而其非常適合如博物館虛擬展覽、遠端會議和多使用者線上遊戲等應用。未來我們希望能進一步改進，使三個子系統能得到更佳的整合。

Along with the rapid development of electronic technology, the methods and tools, that researchers and scientists have developed in order to facilitate the solution of portable image acquisition, display and interaction, have been progressed from laptop, tablet, and nowadays smartphone. Though the technology has shown great improvement, human beings are keeping pursuing better solution that provides fully immersive, totally convincing virtual reality. In this work, a complete low-cost portable multi-viewpoint multimedia system, that includes multi-viewpoint image acquisition, display, and interaction three sub-systems, is presented. We feel confident that this proposed work will make an impact to the related research community and helps people with better documentation and getting closer to be living in a simulation without being able to tell the difference.
For the novel acquisition sub-system, a handheld multi-viewpoint camera array and the corresponding user interface are proposed. The designed handheld multiviewpoint camera array is configurable in various arrangements, including divergence, parallel and converge type. Since the proposed algorithm is able to efficiently align multiple viewpoint images, this proposed configurable multi-viewpoint camera array system is suitable for many applications, such as panoramic video stitching, autostereoscopic 3D displays, bullet-time visual effect and 3D scene reconstruction.
For the display sub-system, a portable 360-degree cylindrical autostereoscopic 3D display system is presented. The proposed system consists of three parts: the optical architecture (for back-projecting image correctly on the cylindrical screen), the projection image transformation workflow (for image rectifying and generating multi-viewpoint images), and the 360-degree motion detection module (for identifying viewers’ locations and providing the corresponding views). Based on the proposed design, only one commercial micro projector is employed for the proposed cylindrical screen. The proposed display offers great depth perception (stereoacuity) with a special designed thick barrier sheet attached to the screen. The viewers are not required to wear special glasses. The user study verified that the proposed display offers satisfactory depth perception (binocular parallax, shading distribution, and linear perspective) for various viewing distances and angles without noticeable discomfort.
For the interaction sub-system, an anamorphic illusion interactive holographiclike tabletop system is proposed. The proposed system is able to synthesize anamorphic images according to the user’s viewpoints, identified via the developed efficient facial feature matching algorithm, on a horizontally-located monitor in real time. Therefore, users would view an image with a strong stereo sense without wearing any extra devices. Besides, by further exploiting infrared cameras to recognize hand gestures, users are allowed to interact with the virtual objects directly.
The overall proposed multimedia system has the advantages of ease of use, low production cost, high portability and mobility. It is suitable for various applications, such as museum virtual exhibition, remote meeting, and multi-user online game. In the future, we would like to further improve the proposed system by integrating three sub-systems better.

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