轮廓波变换的数字全息再现像质量改善  

Quality improvements of digital hologram based on Contourlet transform

作　　者：李滢滢[1,2] 王苏南[2,3] 刘晓利[1] 彭翔[1] 

机构地区：[1]深圳大学光电工程学院教育部、广东省光电子器件与系统重点实验室,广东深圳518060 [2]深圳职业技术学院电子与通信工程学院,广东深圳518055 [3]浙江大学电子与通信工程学院,杭州310058

出　　处：《激光杂志》2017年第3期130-132,共3页Laser Journal

基　　金：国家自然科学基金(61377017)

摘　　要：在数字全息再现像过程中,受到噪声干扰,再现像质量差,对比度低。为了解决当前数字全息再现像方法的缺陷,获得更优的数字全息再现像质量,提出基于轮廓波变换的数字全息再现像质量改善方法。首先采用小波变换去除数字全息再现像噪声,然后采用轮廓波变换方法对数字全息再现像再次去噪,最后采用数字全息再现像实验进行可行性分析。结果表明,本文方法有效去除数字全息再现像的噪声,获得了理想的数字全息再现像,有利于后续的数字全息再现像处理。Noise interference leads to poor quality of digital hologram,low contrast ratio. In order to solve defects and obtain better digital hologram reappear quality,this paper put forward a digital hologram reappear quality improvement strategy based on Contourlet transform domain. Firstly,wavelet transform is used to remove speckle noise and then Contourlet wavelet transform domain method is used remove noise again,finally the experiment was carried out on the feasible analysis. Results show that the proposed strategy can effectively remove noise interference,to obtain ideal digital hologram reappear quality,is advantageous to the subsequent digital hologram reappear processing.

关 键 词：全息技术 散斑噪声 再现像质量 轮廓波变换 增强处理 

分 类 号：TN27[电子电信—物理电子学]