傅里叶全息图 meaning in Chinese
fourier hologram
Examples
- The influences of recording conditions on the snr of the black - white digital images retrieved from fourier transform holograms were experimentally studied . the holograms were recorded on photoresist plates using an electrical addressed tft - lcslm as a data input device , and a normal ccd camera was applied for detecting reconstructed images
采用电寻址液晶空间光调制器作为存储系统的组页器，常规ccd探测器作为重构图像的检测器件，实验研究了在光刻胶干板上记录黑白二值条纹图像的傅里叶全息图时，记录条件对重构图像信噪比的影响。 - Furthermore , three fourier storage schemes were proposed for practical anti - counterfeiting : ( 1 ) store black - white digital images with hidden information made by image coding method , ( 2 ) store several images on the same spot with reference beams of different directions ( peristeophic multiplexing ) , ( 3 ) store a serious of given images recorded closely ( space multiplexing ) . three different fourier holograms were recorded on photoresist plates following the above three schemes using the optimized recording conditions obtained in the first part of this study work . the reconstructed images form the holograms showed some special anti - counterfeit effects
此外，本课题还研究了傅里叶全息存储在防伪上的实际应用，提出了三种防伪存储方案： ( 1 )运用图像编码方案，存储了具有隐藏信息的编码黑白二值图像； ( 2 )运用旋转复用方案，在同一存储点用不同方向的参考光存储了多幅图像； ( 3 )运用空间复用技术，在一定区域内紧靠着记录一系列特定图像的傅里叶全息图。