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相关概念视频

Atomic Force Microscopy01:08

Atomic Force Microscopy

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Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
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相关实验视频

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Measuring the Complete-arch Distortion of an Optical Dental Impression
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适应式双侧面辅助EMD 3D形状造型测量测量方法

Xin Lai, Yunke Xiao, Siqi Tong

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    此摘要是机器生成的。

    本研究引入了一种自适应算法,以提高3D重建的准确性,在不均的照明下使用里埃变换造型测量. 该方法有效地过噪音和背景,增强形状恢复.

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    相关实验视频

    Last Updated: Sep 11, 2025

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    科学领域:

    • 光学计量学 在光学计量学
    • 3D成像是3D成像中的一种.
    • 信号处理 信号处理

    背景情况:

    • 里叶变换谱 (FTP) 对于3D重建至关重要.
    • 不均的照明条件会降低FTP的准确性.
    • 现有的方法在复杂的照明中与噪音和背景作斗争.

    研究的目的:

    • 在非均的光强度环境中提高3D重建的准确性.
    • 开发一个强大的算法,用于富里埃变换的形测量.
    • 为了减轻噪音和背景对边缘图案的影响.

    主要方法:

    • 提出了一个自适应式双阴影辅助实证模式分解 (ADSAEMD) 算法.
    • 用于背景预处理的适应性过.
    • 使用经验模式分解 (EMD) 进行图像模式分解,生成内在模态函数 (IMF) 以避免模态混合问题 (MMP).

    主要成果:

    • 成功地将随机噪声和背景组件从边缘图案中分离出来.
    • 有效地消除了不均的环境光线的影响.
    • 在模拟和实验中证明了精确的3D形状恢复.

    结论:

    • 在具有挑战性的照明下,ADSAEMD算法显著提高了3D重建的准确性.
    • 该方法为FTP中的噪音和背景删除提供了一个强大的解决方案.
    • 这种技术提高了现实世界的应用中3D形状测量的可靠性.