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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/71544

    Title: 影像黑白化之圓盤型複合全像術
    Authors: 陳政樺;Chen,Cheng-Hua
    Contributors: 光電科學與工程學系
    Keywords: 圓盤型複合全像術;影像黑白化;disk-type holography;achromatic image
    Date: 2016-07-25
    Issue Date: 2016-10-13 13:15:41 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本論文主要是討論如何製作出能以一般點光源重建可環繞觀賞的影像黑白化之圓盤型複合全像,並且能配合不同的白光光源調整影像黑白化的程度。
    利用上述提到母、子片的拍攝方式,完成擴展觀賞視窗的同時也製作出了影像黑白化的觀賞視窗,並且由於能控制紅、綠、藍光波長的繞射效率,即使使用了不同的重建光源都能藉由調整子片的拍攝過程使最後觀賞的影像顏色接近白色,產生影像黑白化的效果。;In this study, we discuss how to create a 360-degree viewable achromatic image disk- type holographic stereogram, and the achromatic effect can be controlled to correspond any reconstruction white light.
    To produce an achromatic effect, we will extend the viewing window. Each wavelength has its viewing window, and due to the extended viewing window, there will have an overlapping range. In the overlapping range we can observe achromatic image. In the experiment, we will use two-step holographic process to achieve our purpose. In the first step, we will set a diffuser in the optic system to produce master hologram. Due to diffuser’s characteristic, a convergent point will be extend to a convergent line, and achieve the purpose of extend the viewing window. In the second step, different from the past, we will reconstruct part of master hologram to reconstruct part of the extended viewing window. The diffraction efficiency of each partial extended viewing window can be controlled by fringe visibility and exposure energy. As the result, we can control the intensity of red, green, blue diffraction light to make the final image’s color is very close to white.
    Use the two-step holographic process, we can achieve the purpose of extend the viewing window, and produce the viewing window which can observe achromatic image. And due to the diffraction efficiency of red, green, blue wavelength can be controlled, even if we use different reconstruction white light, we can still control the color mixing to make achromatic effect obvious.
    Appears in Collections:[光電科學研究所] 博碩士論文

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