太赫兹Gabor同轴数字全息二维再现像复原

李琦; 胡佳琦; 杨永发

doi:10.3788/OPE.20142208.2188

您当前的位置：

首页 >

文章列表页 >

太赫兹Gabor同轴数字全息二维再现像复原

信息科学 | 更新时间：2020-08-13

- 太赫兹Gabor同轴数字全息二维再现像复原
- 2D reconstructed-image restoration of terahertz Gabor in-line digital holography
- 光学精密工程 2014年22卷第8期页码：2188-2195
- 作者机构：
  
  哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江哈尔滨,150080
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目（No.61377110）();高等学校博士学科点专项科研基金资助项目（No.20112302110028）()
- DOI：10.3788/OPE.20142208.2188
  中图分类号： O438.1
- 收稿日期：2013-09-25，
  
  修回日期：2013-11-18，
  
  纸质出版日期：2014-08-25
- 稿件说明：
移动端阅览
李琦, 胡佳琦, 杨永发. 太赫兹Gabor同轴数字全息二维再现像复原[J]. 光学精密工程, 2014,22(8): 2188-2195

LI Qi, HU Jia-qi, YANG Yong-fa. 2D reconstructed-image restoration of terahertz Gabor in-line digital holography[J]. Editorial Office of Optics and Precision Engineering, 2014,22(8): 2188-2195
李琦, 胡佳琦, 杨永发. 太赫兹Gabor同轴数字全息二维再现像复原[J]. 光学精密工程, 2014,22(8): 2188-2195 DOI： 10.3788/OPE.20142208.2188.

LI Qi, HU Jia-qi, YANG Yong-fa. 2D reconstructed-image restoration of terahertz Gabor in-line digital holography[J]. Editorial Office of Optics and Precision Engineering, 2014,22(8): 2188-2195 DOI： 10.3788/OPE.20142208.2188.

摘要

提出结合分段对比度拉伸变换（PCST）和基于块的局部最优维纳（PLOW）滤波算法进行太赫兹Gabor同轴数字全息二维再现像图像复原的方法。分别介绍了PCST和PLOW的工作原理，给出了PCST-PLOW组合滤波算法的工作流程。对真实的2.52 THz数字全息再现像进行了去噪处理，并对每一处理过程进行了对比分析。比较了PCST节点对增强效果的影响，其节点的起点和终点分别根据直方图和图像均值确定。对真实太赫兹再现像的处理结果显示：去噪处理后的40帧平均全息图再现像的整体标准差由0.184 9提升到0.307 4，均值与标准差的比值由1.720 8提升到2.268 8。得到的结果表明所用方法明显抑制了噪声，同时提高了图像对比度。

Abstract

An image restoration method of 2D reconstructed-image of terahertz Gabor in-line digital holography was proposed with combination of Piecewise-contrast-stretching Transformation(PCST) and Patch-based Locally Optimal Wiener (PLOW) filter. The PCST and the PLOW algorithms were introduced

respectively

and the working flow of the combined PCST-PLOW algorithm was given. The denoising for a real 2.52 THz reconstructed-image of digital holography was executed

and each step of the image processing was compared. The effect of the PCST on the image enhancement was analysis

in which the starting point and the end point of the nodes were dependent on a histogram and an image average value. The results of treatment on the real terahertz reconstructed-image show that the global standard deviation of the denoising reconstructed-image of 40-frame averaged hologram rises from 0.184 9 to 0.307 4

and the ratio of the mean value to standard deviation rises from 1.720 8 to 2.268 8. These results demonstrate that the proposed method has suppressed image noise

while improving image contrast.

关键词

Keywords

references

杨勇, 薛东旭, 盖琦, 等. 同态滤波法抑制离轴数字全息零级项[J]. 光学精密工程, 2012,20(9): 1877-1882. YANG Y, XUE D X, GE Q, et al.. Suppression of zero-order image in off-axis digital holography based on homomorphic filtering [J]. Opt. Precision Eng., 2012,20(9): 1877-1882. (in Chinese)

李琦,丁胜晖,李运达,等. 太赫兹数字全息成像的研究进展[J]. 激光与光电子学进展,2012, 49(5): 050006. LI Q, DING SH H, LI Y D, et al.. Advances in Research of THz digital holography imaging [J]. Laser & Optoelectronics Progress, 2012, 49(5): 050006. (in Chinese)

XUE K, LI Q, LI Y D, et al.. Continuous-wave terahertz in-line digital holography [J]. Opt. Lett., 2012, 37 (15): 3228-3230.

李琦,丁胜晖,李运达,等. 2.52THz离轴数字全息成像和焦平面成像特性比较 [J]. 中国激光, 2012, 39 (9): 0909003. LI Q, DING SH H, LI Y D, et al.. Comparison between 2.52 THz off-axis digital holography and focal-plane imaging [J]. Chinese J. Laser, 2012, 39 (9):0909003. (in Chinese)

贾勤,李志全. 数字全息再现图像散斑噪声消除新方法[J]. 计算机工程与应用,2012,48(9): 205-207. JIA Q, LI ZH Q. Speckle denoising new method for reconstructed image of digital holography [J]. Computer Engineering and Applications, 2012, 48(9): 205-207.(in Chinese)

周灿林,亢一澜,张志锋. 小波变换在数字全息中的应用[J]. 光电工程,2004,31(7): 42-45. ZHOU C L, KANG Y L, ZHANG ZH F. Application of wavelet transform in digital holography [J]. Opto-Electronic Engineering, 2004, 31(7): 42-45. (in Chinese)

杨文波,马天玮,刘剑. 非局部变分修复法去除高密度椒盐噪声[J]. 中国光学, 2013,6(6): 876-884. YANG W B, MA T W, LIU J. Elimination of impulse noise by non-local variation inpainting method [J]. Chinese Optics, 2013, 6(6): 876-884. (in Chinese)

CHATTERJEE P, MILANFAR P. Patch-based locally optimal denoising[C].Proc. of IEEE Intl. Conf. on Image Processing, 2011: 2553-2556.

CHATTERJEE P, MILANFAR P. Path-based near-optimal on image denoising [J]. IEEE Transactionson Image Processing, 2012, 21(4):1635-1649.

CHATTERJEE P, MILANFAR P. Is denoising dead? [J]. IEEE Transactions on Image Processing, 2010, 19(4):895-911.

李琦,夏志伟,丁胜晖,等. 采用非局部均值的连续太赫兹图像去噪处理[J]. 红外与激光工程,2012,41(2): 517-524. LI Q,XIA ZH W,DING SH H, et al.. Image denoising of CW THz images by use of non-local mean [J]. Infrared and Laser Engineering, 2012,41(2): 517-524. (in Chinese)

GONZALEZ R C, WOODS R E. Digital Image Processing [M]. Third Edition. Beijing: Publishing House of Electronics Industry, 2010:137-141.

夏志伟. 基于非局部滤波算法的相干激光雷达图像复原研究[D]. 哈尔滨:哈尔滨工业大学,2012. XIA ZH W. Coherent Ladar Image Restoration by Non-local Filtering Algorithms [D]. Harbin:Harbin Institute of Technology, 2012.(in Chinese)

浏览量

423

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

共路剪切数字全息自参考聚焦显微成像

集成电路X射线图像的多正则化图像复原

利用频谱相位最大值自适应定位全息正一级频谱

自适应双刃边法模糊红外图像复原

地外生命探测数字全息技术发展现状及趋势