三维物体主菲涅尔波带全息成像法  

“Host”Fresnel wave zone holographic imaging method based on three-dimensional objects

作　　者：杨涛[1] 周皓[1] 季冬[1] 顾济华[1] 

机构地区：[1]苏州大学物理科学与技术学院,江苏苏州215006

出　　处：《现代电子技术》2014年第20期112-115,119,共5页Modern Electronics Technique

摘　　要：为了提高三维物体计算全息图的生成速度,在主菲涅尔波带法的基础上提出了一种改进算法。首先依据衍射距离将二维主菲涅尔波带转换为两组一维波带;然后依据实际应用情况与显示装置进行尺寸匹配;最后将得到的波带叠加获得三维物体全息图。该算法与改进前相比,内存空间的占用较小,运算速度得到显著提高,生成的全息图经由DMD再现获得高质量的三维物体再现图像。In order to improve the generating speed to the three-dimensional object’s calculation hologram,an improved al-gorithm based on the“host”Fresnel wave zone method is proposed. The two-dimensional“host”Fresnel wave zone is converted to two one-dimensional wave zones according to the diffraction distance,and then the desired Fresnel wave zones are matched with the size of the display device according to the actual application. Finally,the obtained Fresnel wave zones are superim-posed to achieve three-dimensional object’s hologram. Compared to the previous algorithm,the improved algorithm occupies less memory space,its computing speed has been significantly improved and a high quality reconstructed image generated by the DMD can be obtained.

关 键 词：计算全息 主菲涅尔波带 光电再现 

分 类 号：TN911-34[电子电信—通信与信息系统] O438.1[电子电信—信息与通信工程]