用波纹隐藏马尔科夫模型对薄 Nd-Fe-B 样本进行电子全息学观测的降噪
Sujin Lee1,2, Yoshihiro Midoh3, Yuto Tomita4
1Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Fukuoka, 819-0395, Japan. sujin4524@kims.re.kr.
Applied microscopy
|April 17, 2024
概括
本研究介绍了一种波纹隐藏马尔科夫模型 (WHMM),用于有效降低电子全息中的噪声. 该方法显著提高了信号清晰度,特别是在像Nd2Fe14B这样的材料的高分辨率成像中.
科学领域:
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
- 图像技术技术的成像技术
背景情况:
- 电子全息是一种强大的磁场和电场成像技术.
- 电子全息中的相检索可以引入文物和噪音.
- 弱信号检测对于高分辨率分析至关重要.
研究的目的:
- 为了评估波束隐藏马尔科夫模型 (WHMM) 在电子全息学中的降噪效果.
- 评估WHMM无声化对信号分离和图像质量的影响.
- 为了确定降噪对空间分辨率参数的影响.
主要方法:
- 波束隐藏马尔科夫模型 (WHMM) 应用于信号处理.
- 电子全息观察Nd2Fe14B薄薄的结果.
- 对相间断和信号与噪声比率 (SNR) 的分析.
主要成果:
- 在电子全息中,WHMM有效地将弱信号与噪声分开.
- 在相检索过程中产生的人工相间断被抑制.
- 脱离显示了对干扰边缘间距狭窄的观测有显著的好处,增强了空间分辨率.
结论:
- WHMM是电子全息学中降噪的可行方法.
- 这种技术提高了电子全息研究的精度和可靠性.
- 这些发现对于推进材料科学中的高分辨率成像至关重要.
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