消除数字散斑噪声的一种有效方法
An effective method for reducing speckle noise in digital holography
摘 要
本文提出一种消除数字全息再现像散斑噪声的有效方法。该方法不是基于传统的滤波技术，而是通过不断旋转照明光的方向来产生一系列的数字全息图，基于这些数字全息图的再现物光的强度场具有不同的散斑场。根据统计光学把这些具有不同散斑分布的强度场进行平均，就可以有效消除散斑噪声，得到清晰的再现物体图像。文中通过对一个普通电池和狮头鱼尾雕像的测试，证实该方法是一种简单有效的消除数字全息再现像散斑噪声的方法。
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Abstract
An effective method for reducing the speckle noise in digital holography is proposed in this paper. Different from the methods based on classical filtering technique, it utilizes the multiple holograms which are generated by rotating the illuminating light continuously. The intensity images reconstructed by a series of holograms generated by rotating the illuminating light possess different speckle patterns. Hence by properly averaging the reconstructed intensity fields, the speckle noises can be reduced greatly. Experimental results show that the proposed method is simple and effective to reduce speckle noise in digital holography.
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收稿日期 2007/3/13
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备注This work was supported by the National Natural Science Foundation of China under Grant No. 10772086. X. Kang's e-mail address is ckkang@mail.njust.edu.cn or ckkang_njust@yahoo.com.cn.
引用该论文: Xin Kang. An effective method for reducing speckle noise in digital holography[J]. Chinese Optics Letters, 2008, 6(2): 100～103
被引情况:
【1】吕且妮,高岩,葛宝臻,马志彬,赵晨,张以谟, "基于霍夫变换的数字全息粒子尺寸测量",中国激光 36, 940-944(2009)
【2】肖文,张菁,戎路,潘锋,刘烁,王璠璟,何阿呷, "基于旋转线偏振态的数字全息散斑噪声抑制的改进方法",Chinese Optics Letters 9, 60901-60903(2011)
【3】秦怡,钟金钢, "LED数字全息中的位相再现质量评估",Chinese Optics Letters 7, 1146-1150(2009)
【4】巩琼,秦怡, "二步相移数字全息中实际相移角的获取",中国激光 37, 1807-1811(2010)
【5】张浩,谢敬辉,刘娟,王涌天, "利用纯位相空间光调制器对三维计算全息图的光学重建",Chinese Optics Letters 7, 1101-1103(2009)
【6】孙鸣捷,陆祖康, "硅基液晶激光投影中散射体散斑抑制作用的研究",中国激光 37, 718-721(2010)
【7】常宏,黄伟,杨福贵,明海,谢建平, "激光扫描显示系统中散斑研究",Chinese Optics Letters 7, 764-767(2009)
【8】戎路,肖文,潘锋,刘烁,李瑞, "基于多偏振态记录的数字全息散斑噪声抑制方法",Chinese Optics Letters 8, 653-655(2010)
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