Optical sectioning by optical scanning holography and a Wiener filter
Optical sectioning by optical scanning holography and a Wiener filter
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DOI：
10.1364/ao.45.000872
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发表时间：
2006-02-10
期刊：
影响因子：
1.9
通讯作者：
Kim, T
中科院分区：
文献类型：
--
作者：
Kim, T
我提出了一种新的数字技术，减少散焦噪声的重建截面图像从复杂的全息图厚的对象。在全息术的三维显微应用中，减少从焦平面外散射的散焦光是一个重要的问题。在这项技术中，我首先使用光学扫描全息术提取一个厚物体的复全息图。在此之后，我从复全息图中分离出聚焦和散焦平面的功率谱。最后，利用功率谱构造了一个维纳滤波器。维纳滤波器在聚焦平面的截面图像的重建中减小散焦噪声。计算机模拟表明，提出的维纳滤波器降低了散焦噪声，并提供了截面图像。(c)2006年美国光学学会。
I propose a novel digital technique that reduces defocus noise in the reconstruction of the sectional images from the complex hologram of a thick object. In three-dimensional microscopy applications of holography, reducing the defocused light scattered from outside the focused plane is an important issue. In this technique I first extract a complex hologram of a thick object by using optical scanning holography. After that, I separate the power spectra of the focused and defocused planes from the complex hologram. Finally, I construct a Wiener filter by use of the power spectra. The Wiener filter reduces the defocus noise in the reconstruction of the sectional image of the focused plane. Computer simulations show that the proposed Wiener filter reduces the defocus noise and provides the sectional images. (c) 2006 Optical Society of America.