Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

28
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
28
Applications of GIS: Disaster Management and Emergency Response01:29

Applications of GIS: Disaster Management and Emergency Response

22
Geographic Information System (GIS) technology is essential for risk identification, action prioritization, and resource optimization in critical situations like flooding and earthquakes. By integrating spatial and demographic data, GIS provides a comprehensive framework for emergency response.GIS integrates data layers, like rainfall intensity, topography, elevation profiles, and river levels, to model high-risk flood zones. These layers assess areas susceptible to flooding based on their...
22
Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

21
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
21
Manipulation and Analysis01:21

Manipulation and Analysis

13
GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
13
Selected Data About Geographic Locations01:25

Selected Data About Geographic Locations

16
Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
16
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

14
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
14

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

PavSnRK2.2, a member of the SNF1-related protein kinase 2 family, positively regulates ABA-induced fruit ripening in sweet cherry.

Plant physiology and biochemistry : PPB·2026
Same author

Isolation of Infectious Highly Pathogenic Avian Influenza A(H5N1) Virus from Fetal Bovine Serum, United States, 2025.

Emerging infectious diseases·2026
Same author

Glucagon-like peptide-1 receptor agonists versus dipeptidyl peptidase-4 inhibitors after liver resection for hepatocellular carcinoma in patients with type 2 diabetes: a target trial emulation study.

Gut·2026
Same author

Salvia miltiorrhiza Bunge alleviates pulmonary fibrosis by promoting fibroblast mitophagy.

Journal of ethnopharmacology·2026
Same author

The transcription factor PavERF28 promotes fruit softening by regulating cell wall degradation in sweet cherry (Prunus avium L.).

International journal of biological macromolecules·2026
Same author

Linear and nonlinear modeling of selenium biomarker dynamics in Keshan disease: Insights for precision prevention from rats and human populations.

Ecotoxicology and environmental safety·2026

相关实验视频

Updated: May 10, 2025

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
11:41

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation

Published on: February 1, 2020

20.2K

基础模型可以可靠地识别空间危险吗? 一个关于边缘细分的案例研究.

Diwei Sheng1, Giles Hamilton-Fletcher2,3, Mahya Beheshti2,4

  • 1Department of Computer Science and Engineering, NYU Tandon School of Engineering, Brooklyn, New York, USA.

Assistive technology : the official journal of RESNA
|April 23, 2025
PubMed
概括

基础模型在与路边细分作斗争,这是帮助盲人和视力低下者 (PBLV) 在城市导航中的辅助技术的一个关键挑战. 需要精细化实时,准确的路边检测.

关键词:
辅助技术是指辅助技术的使用.路边线细分 路边线细分基础模型的基础模型.户外导航 户外导航 户外导航视力受损者 视力受损者

更多相关视频

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.1K
Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
14:55

Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street

Published on: January 20, 2023

3.2K

相关实验视频

Last Updated: May 10, 2025

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation
11:41

Evaluation of an Exclusive Spur Dike U-Turn Design with Radar-Collected Data and Simulation

Published on: February 1, 2020

20.2K
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
06:55

Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling

Published on: August 5, 2016

8.1K
Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
14:55

Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street

Published on: January 20, 2023

3.2K

科学领域:

  • 计算机视觉 计算机视觉
  • 辅助技术 辅助技术 辅助技术
  • 机器人技术 机器人技术 机器人技术

背景情况:

  • 路边定义了安全的行人区域,但会造成脚的危险,特别是对于失明和视力低下的人 (PBLV).
  • 准确的路边检测对于开发以视觉为基础的城市导航辅助技术至关重要.
  • 目前的基础模型在准确识别路边方面存在局限性.

研究的目的:

  • 为了评估基础模型对边缘细分的有效性.
  • 引入一个大规模的数据集,用于基准测试边缘细分模型.
  • 确定挑战,并提出解决方案,以改善辅助技术中的道检测.

主要方法:

  • 开发迄今为止最大的边缘细分数据集.
  • 在边缘分段任务上对最先进的基础模型进行基准测试.
  • 分析模型性能指标,包括精度,回忆和推断时间.
  • 提议过的界限框选择,以提高准确性.

主要成果:

  • 最先进的基础模型表现出低精度和回忆在路边细分.
  • 模型经常将路边与相似的物体或非路边表面混.
  • 性能最好的模型的平均推断时间为3.70秒,阻碍了实时应用.
  • 过的界限框技术显示了提高准确性的潜力.

结论:

  • 基础模型虽然灵活,但对于实际的辅助导航,需要大幅度改进.
  • 专门的数据集和定制培训对于应对PBLV导航挑战至关重要.
  • 目前的基础模型在准确细分辅助技术道方面存在隐性弱点.