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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6811


    Title: 可環繞觀賞之傳統圓盤型複合全像片360°;viewable traditional disk-type multiplex holography
    Authors: 林詩珩;Shi-Heing Lin
    Contributors: 光電科學研究所
    Keywords: 圓盤型複合全像術;影像變形修正;複合全像術;disk-type multiplex holography;image distortion remedy;multiplex holography
    Date: 2004-06-30
    Issue Date: 2009-09-22 10:29:07 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 摘要 傳統圓盤型複合全像術是由本實驗室學長蘇威宏、張瑞城於1996年提出,其拍攝方法的特性為在物光系統中加入了一圓柱透鏡,以縮小物光的曝光面積。在歷經了前後數位學長的努力後,於2002年蘇永添學長終於研究出了實用性極高的『可環繞觀賞之成像面圓盤型複合全像術』(在物光系統中並未加入圓柱透鏡來縮小曝光面積),不但能重建出漂浮於圓盤上方的立體影像,並且又能同時提供物體360°水平視角的影像給環繞於圓盤周圍的人觀賞。 本論文的目的即在於以傳統在物光系統中加入圓柱透鏡的方式來拍攝具有可環繞觀賞效果的圓盤型複合全像片。由於圓柱透鏡的像散聚焦效應,所以最後重建出來的影像會產生相當嚴重的變形。因此,我們便利用物光光路行進的特性,以逆光路的方式來推算出所需輸入的二維變形影像,來修正最後所重建之三維影像的變形,並對修正後之結果作分析,然後再由此得出更進一步的修正方法,以得到更趨近完美無變形的影像。 在論文的最後,我們也會分別對修正前及修正後和以『可環繞觀賞之成像面圓盤型複合全像術』的拍攝方式所得到的立體影像作簡單的特性分析與比較。 360° viewable disk –type multiplex holograms was at first fabricated as an image-plane hologram , which is capable of providing 3D real-images for the people viewing around the hologram disk simultaneously . We demonstrate that the traditional method ,which is adding a cylindrical lens in the optical system to reduce the area of exposure for a single hologram, could also be adopted to fabricate a disk-type multiplex hologram for 360° viewing. Since the process utilizes the astigmatic focusing effect of the cylindrical lens, severe image distortion will present. We have found out methods based on the characteristics of the optical system to remedy the distortion of the reconstructed image and an almost distortionless image was reconstructed. The results from both experiments and numerical simulation for the original and distortion-corrected images were compared and discussed ,and the characteristics of them were analyzed .
    Appears in Collections:[光電科學研究所] 博碩士論文

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