volume hologram 中文意思是什麼
volume hologram
解釋
立體全息照相片-
Experimental results show the obvious advantage and robustness of our methods. in this thesis, we study the algorithm of holographic stereogram display that can be implemented using cgh. we discuss the imaging process through capturing sequence parallax images, illuminating hologram by a plane wave creates the volume effect in the observer ' s eyes
對基於計算機的三維全息成像中的光柵編、解碼理論進行了研究，在此基礎上，將小波變換方法應用到全息顯示中，建立新的變換模式下的光柵編、解碼演算法，計算中採用小波包分解方法，使全息條紋的計算更加快速、便捷。 -
Typical computer generated holography ( cgh ) and hologram synthesis that simulate typically optical holography need to compute a huge 2 - d holographic fringe, or to lose some 3 - d information and resolution to reduce data. the first real - time display of holographic images was reported in 1990 by the mit spatial imaging group. but this is still an open problem because view angle of holographic images, volume and speed of transmit are limited
傳統的研究集中在計算機生成全息圖（ computer - generatedholography ，簡稱cgh ）和全息圖綜合的方法上，採用模擬光全息的物理方法，從而導致數據量龐大，無法在現有硬體上完成實時處理，或者靠損失部分三維信息和解析度以減少數據量，但失去了真三維顯示的效果。 -
( 3 ) we make a comparison between the binary and photorefractive edge - enhancement jtc. ( 4 ) taking the volume hologram storage of the photorefractive crystals, we can carry out the matched filtering correlation recognition with real - time operation
（ 4 ）利用光折變晶體的體全息存儲特性來實時製作匹配濾波器，避免了利用全息干板製作濾波器時的顯影、定影等化學操作和濾波器的嚴格復位問題。 -
Abstract : first, this paper deduced the diffraction equation for refractive index phase modulation holographic grating, and pointed out that the diffraction efficiency was mainly influenced by refraction index modulation, and the diffraction efficiency of different levels came from many factors. the volume grating effect affected the diffraction efficiency of transmission hologram
文摘:首先推出折射率相位調制型全息光柵的衍射方程，由此說明衍射效率主要取決于調制折射率，且各級衍射光的衍射效率不同是多種原因造成的。
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