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相关概念视频

Distance Measurements by Taping01:18

Distance Measurements by Taping

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...
Distance Corrections01:15

Distance Corrections

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...
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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 short distances...
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

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...

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相关实验视频

Updated: Jun 30, 2026

How to Build a Dichoptic Presentation System That Includes an Eye Tracker
05:48

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Published on: September 6, 2017

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一种测量闭环延迟的方法,用于在没有额外设备的情况下,在视线条件下染.

Matt D Anderson1, Emily A Cooper1,2, Jorge Otero-Millan3,4

  • 1Herbert Wertheim School of Optometry & Vision Science, University of California, Berkeley, California, USA.

Behavior research methods
|December 3, 2025
PubMed
概括

我们开发了一种简单的方法,只使用现有的眼睛跟踪硬件来测量注视条件染延迟. 该技术准确量化系统延迟,以精确控制视觉刺激.

关键词:
眼球追踪器 眼球追踪器粉状化加工 粉状化加工视线依赖染的染方式延迟时间 延迟时间 延迟时间

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Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
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Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
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科学领域:

  • 视觉感知研究 视觉感知研究
  • 人与计算机的互动.
  • 神经科学是一个神经科学.

背景情况:

  • 凝视条件染基于眼睛运动动态调整视觉刺激.
  • 精确控制刺激在视网膜上的位置对于研究视觉领域的视觉处理至关重要.
  • 精确测量系统延迟是必不可少的,但对于凝视条件系统来说具有挑战性.

研究的目的:

  • 介绍一种简单的,独立于硬件的方法来测量视线依赖染系统的延迟.
  • 为了使研究人员能够可靠地量化视线转移和刺激更新之间的时间滞后.

主要方法:

  • 开发了一种新的延迟测量技术,仅使用眼球追踪器和显示器.
  • 染了两个模拟的瞳孔:一个具有预定义的轨迹,第二个视线对第一个视线有条件.
  • 系统延迟是由时间延迟决定的,在这个时间延迟中,凝视条件的瞳孔与轨迹瞳孔相匹配.

主要成果:

  • 该方法准确地测量了系统延迟,而不需要额外的硬件.
  • 通过人工延迟验证证实,测量的延迟与显示刷新率预测相对应.
  • 该技术提供了一种低成本和精确的方法来量化视线依赖染延迟.

结论:

  • 这种方法为测量视线依赖染延迟提供了一个简单且具有成本效益的解决方案.
  • 它使研究人员能够在实验中更精确地控制视觉刺激.
  • 可靠的延迟测量是推动视觉感知和感官处理研究的关键.