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相关概念视频

Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

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Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
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Graphical and Analytic Representation of Sinusoids01:20

Graphical and Analytic Representation of Sinusoids

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Analyzing two sinusoidal voltages with equal amplitude and period but different phases on an oscilloscope, an instrument used to display and analyze waveforms, involves a three-step process.
The first step is measuring the peak-to-peak value, which is twice the amplitude of the sinusoid. This provides information about the maximum voltage swing of the waveform.
Secondly, the period and angular frequency are determined. The period is the time taken for one complete cycle of the waveform, while...
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Area Computation by the Alternative Coordinate Method01:24

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The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
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相关实验视频

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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适应性相位检索算法用于局部突出区域,基于零碎的正弦函数.

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    概括
    此摘要是机器生成的。

    这项研究引入了一个自适应阶段检索算法,以从阶段测量特征测量 (PMP) 中的和图像中恢复丢失的3D形状数据. 该方法有效地重建高反射物体的3D形状,提高工业测量精度.

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    相关实验视频

    Last Updated: Jul 1, 2025

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    科学领域:

    • 光学计量学 在光学计量学
    • 3D形状测量 3D形状测量
    • 图像处理 图像处理

    背景情况:

    • 阶段测量特征测量 (PMP) 对于工业3D形状测量至关重要.
    • 来自高反射表面的图像和导致PMP中的相位损失和3D重建错误.

    研究的目的:

    • 开发一种适应性相位检索算法,用于在和区域中准确的相位检索.
    • 为了使用PMP实现高反射物体的精确3D重建.

    主要方法:

    • 使用最小误差值识别的和区域.
    • 用不同曝光度的融合图像来定位边缘峰谷坐标.
    • 采用最小平方法和自适应的断面正弦函数用于边缘图案恢复.

    主要成果:

    • 成功地从受损的侧侧边缘中检索出丢失的相位信息.
    • 实现了高反射物体的精确3D重建.
    • 该方法只需要一个或两个图像,曝光时间各不相同.

    结论:

    • 拟议的自适应算法有效地克服了反射表面的PMP相位损失.
    • 在操作时间,系统复杂性和硬件要求方面提供优势.
    • 为具有挑战性的对象进行3D测量提供了有效的工业解决方案.