计算全息图的制作及再现像质量评价  

Production of Computer Generated Hologram and Evaluation of Reconstruction Image Quality

作　　者：孙平平[1] 王晓颖[1] 范蕾[1] 

机构地区：[1]西安工业大学理学院,西安710021

出　　处：《西安工业大学学报》2014年第4期263-267,共5页Journal of Xi’an Technological University

摘　　要：为了研究迂回位相编码方法与修正离轴参考光法制成的计算全息图再现像质量优劣,本文采用这两种方法分别制作出三幅不同图像的全息图,并利用计算机对其进行模拟再现,引入峰值信噪比和均方误差对再现像质量进行定量评价.结果迂回位相编码峰值信噪比分别为31.572 2dB、32.321 8dB、25.566 7dB,均方误差为45.275 6、38.097 9、180.470 2;离轴编码法中信噪比最大值为31.675 0,均方误差最小值为44.215 8.In order to study the reconstruction image quality of computer generated hologram （CGH） of typical Roman type III and modified off-axis reference beam ,three different image holograms are produced by two coding methods .The reconstruction images are simulated by using computer .The quality is quantitatively evaluated by introducing the peak signal-to-noise ratio （PSNR） and mean square error （MSE） .The results display that PSNR are 31 .572 2 dB ,32 .321 8 dB and 25 .566 7 dB with the coding method of detour phase ,and the MSE is 45 .275 6 ,38 .097 9 and 180 .470 2 .The maximum of PSNR is 31 .6750 ,and the minimum of MSE is 44 .215 8 .

关 键 词：计算全息图 迂回位相编码 修正离轴参考光 质量评价 

分 类 号：O438.1[机械工程—光学工程]