d hologram 中文意思是什麼
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We specialize in the r & d and production of security hologram stickers and hot stamping hologram foil
除擁有超前的全息製版技術和全封閉生產線外，還具有嚴謹的管理體系，完善的保密制度及優質的售前、售中、售後服務。 -
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。 -
Digital holography is a new imaging technique that uses a charge coupled device ( ccd ) camera for hologram recording and a numerical method for hologram reconstruction. this paper presents the concept and underlying theory for digital holography and its applications in 3 - d object reconstruction and optical metrology
數字全息術以ccd等光電探測器件記錄全息圖，用數值方法再現全息圖，它是綜合光學全息原理和計算機技術、電子技術以及數字圖像處理技術發展起來的一種新型全息成像技術。 -
The fundamental theory for digital lensless fourier transform holography and its applications in 3 - d object reconstruction and optical metrology are presented in this dissertation. ( 1 ) analytical foundation for numerical reconstruction of digital lensless fourier transform holography, namely discrete fourier transform theory, is presented. the basic principle and mathematical model for recording and numerical reconstruction of digital lensless fourier transform hologram is elaborated
主要內容包括： （ 1 ）討論了數字無透鏡傅里葉變換全息術數值重建的數學基礎? ?離散傅里葉變換的基本理論，分析了數字無透鏡傅里葉變換全息圖記錄與再現的基本原理，建立了數字無透鏡傅里葉變換全息圖記錄與再現的數學模型。
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