摘要
基于Whittaker-Shannon抽样定理,对计算全息的采样进行了研究,获取适合计算全息图的采样间隔,并研究了菲涅尔全息图采样间隔与全息图尺寸、物点坐标及物点到全息面距离的关系以及傅里叶变换全息中全息面记录点数与物点采样间隔的关系。实验模拟表明此方法采样后的全息图再现像效果较好,且有利于减少全息图的信息存储量和提高全息图的计算速度。
According to the sampling theorem of Whittaker-Shannon,the sampling relation of computer-generated hologram( CGH) was investigated,the fit sampling distance of CGH was acquired. The relationship of sampling distance,the size of hologram,object coordinate and the distance between object and hologram was discussed in Fresnel hologram. The relationship between the number of hologram and the imformation of object was also researched. The experiment showed that hologram after fit sampling had a good image. This method is propitious to reduce the storage of hologram information and improve the speed of computing.
出处
《激光杂志》
北大核心
2015年第3期21-23,共3页
Laser Journal
基金
国家自然科学基金资助项目(11304259)
福建省自然科学基金(2012J01026)资助项目
关键词
全息
抽样定理
采样间隔
菲涅尔全息
全息再现像
Holography
the sampling theorem of Whittaker-Shannon
the sampling distance
Fresnel hologram
hologram image
