摘要
首先以模拟退火方法计算了二元傅立叶变换全息图和四相位傅立叶变换全息图,然后以傅立叶变换性质为基础,提出了一种逆向求解全息图方法。在该方法中,将被显示的图象作为全息图的傅立叶变换面,图象的每个象素由全息面中特定空间频率的正弦光栅的傅立叶变换形成,各正弦光栅的空间频率由象素坐标决定,全息图则为一系列正弦光栅的线性迭加。该方法是一种计算机生成全息图的新方法。
At first this paper computes binary Fourier transform holograms and four phases Fourier transform holograms by simulated annealing algorithm,namely,an algorithm of converse computing hologram is provided based on character of Fourier transform.In this case,an image is located at plane of Fourier transform of hologram,every pixcil is composed of Fourier transform of sinusoidal grating that there are special space frequency in plane of hologram,the frequency is determined by coordinate of the pixcil.Hologram is composed of a linear summation of sinusoidal functions.It is a novel algorithm for computer generation hologram.
出处
《计算机工程与应用》
CSCD
北大核心
2005年第19期9-11,104,共4页
Computer Engineering and Applications
基金
国家自然科学基金资助(编号:60473102)
中国科学技术大学<面向21世纪教育振兴行动计划>博士后基金资助
关键词
光学信号处理
线性迭加
计算机生成全息图
optics signal processing,linear summation,Computer Generation Hologram
