太赫兹图像模糊内核研究

IF 0.3 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY
V. Abramova, S. Abramov, V. Lukin, I. Grigelionis, L. Minkevičius, G. Valušis
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引用次数: 0

摘要

本文讨论了太赫兹图像的数字处理问题。结果表明,尽管成像装置的硬件部分有所改进,但获取的图像仍然经常分辨率较低,并受到噪声和模糊效应的影响。因此,为了提高图像的视觉质量,最好采用特殊的数字处理方法。虽然在太赫兹图像的去噪方面已经取得了一些进展,但对其去模糊的研究仍处于初级阶段。因此,本文试图分析真实太赫兹图像的模糊函数特性,以便在设计相应的去模糊技术时进一步利用这些特性。为此,本文采用了纯相位图像方法。对三种最常见的模糊类型(散焦模糊、运动模糊和高斯模糊)的模糊特性研究表明,对于测试图像,它们是可以区分的,其主要参数也是可以评估的。然而,将这种方法应用于真实的太赫兹图像时发现,图像中的模糊特性与模拟实例中的模糊特性大相径庭。真实的模糊表现出相当复杂的行为,估计其内核需要额外的研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of blur kernel of terahertz images
The paper discusses issues of digital processing of terahertz images. It is shown that despite the improvement of the hardware part of imaging setups, the acquired images still often have a low resolution and suffer from noise and blurring effects. Thus, to improve their visual quality, it is advisable to use special digital processing methods. While some progress has already been made in terms of denoising of terahertz images, the research of their deblurring is only at the very early stage. Therefore, this paper attempts to analyze the properties of blur functions for real terahertz images to further use them while designing a corresponding deblurring technique. For this purpose, the phase-only image method has been used. A study of blur properties for the three most common blur types (defocus, motion and Gaussian blur) has shown that for test images they can be distinguished and their main parameters can be assessed. However, the application of this method to real terahertz images has shown that the blur characteristics in them are very different from the ones obtained for modelled examples. The real blur demonstrates a quite complex behaviour and estimating its kernel requires additional research.
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来源期刊
Lithuanian Journal of Physics
Lithuanian Journal of Physics 物理-物理:综合
CiteScore
0.90
自引率
16.70%
发文量
21
审稿时长
>12 weeks
期刊介绍: The main aim of the Lithuanian Journal of Physics is to reflect the most recent advances in various fields of theoretical, experimental, and applied physics, including: mathematical and computational physics; subatomic physics; atoms and molecules; chemical physics; electrodynamics and wave processes; nonlinear and coherent optics; spectroscopy.
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