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相关概念视频

Distance Measurements by Taping01:18

Distance Measurements by Taping

541
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
541
Distance Problem01:29

Distance Problem

105
When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
105
Distance Corrections01:15

Distance Corrections

332
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
332
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

452
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
452
The Distance Formula01:20

The Distance Formula

696
In geometry, measuring the direct distance between two points on a plane is essential in various practical and theoretical applications. Whether in navigation, engineering, or computer graphics, determining the shortest path between two locations involves using the distance formula. This formula is derived from the Pythagorean Theorem, which relates the lengths of the sides of a right triangle. On a coordinate plane, the horizontal and vertical distances between two points serve as the legs of...
696
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

586
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
586

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相关实验视频

Updated: Mar 1, 2026

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

3.0K

UDFStudio:数据集,基准和无符号距离函数生成模型的统一框架.

Junsheng Zhou, Weiqi Zhang, Baorui Ma

    IEEE transactions on pattern analysis and machine intelligence
    |February 27, 2026
    PubMed
    概括
    此摘要是机器生成的。

    本研究介绍了UDiFF,这是一个新的扩散模型,用于使用无符号距离函数 (UDF) 生成3D开放表面. 它还介绍了UWings数据集和评估基于UDF的生成和重建的基准.

    相关实验视频

    Last Updated: Mar 1, 2026

    A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
    08:12

    A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

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    科学领域:

    • 计算机图形 计算机图形
    • 人工智能的人工智能
    • 3D几何处理处理 3D几何处理

    背景情况:

    • 无标记距离函数 (UDF) 对于开放的表面是有效的,但缺乏专门的3D生成模型.
    • 现有的3D数据集主要具有防水网格,阻碍了开放表面的研究.
    • 通过当前的方法来产生多样化的开放表面3D内容受到限制.

    研究的目的:

    • 介绍UDiFF,一种新的基于扩散的3D生成模型,用于UDF.
    • 启用有条件和无条件生成具有开放表面的纹理3D形状.
    • 建立基于UDF的开放表面生成和重建的标准化基准.

    主要方法:

    • 开发了UDiFF,一种在空间频域运行的扩散模型.
    • 实现了一个可学习的波量变换用于UDF生成,从数据中优化.
    • 创建了UWings数据集,其中包含1,509个有翅膀的生物3D模型.

    主要成果:

    • UDiFF成功地生成具有开放表面的有纹理的3D形状.
    • 可学习的波量变换在UDF生成中优于手动选择.
    • UWings数据集为评估基于UDF的方法提供了一个基准.

    结论:

    • 使用UDFs,UDiFF推进了使用UDFs的开放表面的3D生成建模.
    • 数据驱动的波纹方法增强了UDF表示学习.
    • 乌温斯的数据集和基准标准有助于未来对开放表面重建的研究.