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Related Concept Videos

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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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...
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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

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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...
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Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

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GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
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Field Application of Global Positioning System01:28

Field Application of Global Positioning System

38
The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
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Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

28
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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Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
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A Roadside Precision Monocular Measurement Technology for Vehicle-to-Everything (V2X).

Peng Sun1, Xingyu Qi1, Ruofei Zhong1

  • 1College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China.

Sensors (Basel, Switzerland)
|September 14, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces an automated system for precise vehicle distance detection using camera streams and edge computing. The technology enhances traffic safety by providing accurate data for smart transportation and holographic intersections.

Keywords:
YOLOv5xadvisory systemobject recognitionpedestrian safetysingle-image distance measurementtraffic safety

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Area of Science:

  • Smart Transportation Systems
  • Computer Vision for Traffic Analysis
  • Edge Computing Applications

Background:

  • Vehicle-to-Everything (V2X) communication is advancing, necessitating enhanced roadside sensing for "holographic intersections."
  • Accurate, real-time roadside data is critical for V2X systems, collaborative perception, and decision-making.
  • Current systems require improved methods for precise vehicle detection and distance estimation.

Purpose of the Study:

  • To develop an automated scheme for accurate vehicle distance detection and warning using camera video streams.
  • To leverage edge computing and neural networks for intelligent roadside data processing.
  • To provide centimeter-level distance accuracy for enhanced traffic safety in smart transportation.

Main Methods:

  • Utilized camera video streams for data acquisition.
  • Implemented edge computing units for on-site intelligent processing.
  • Employed neural network models for object recognition and distance estimation via similar triangles.
  • Developed a warning scheme based on estimated distances.

Main Results:

  • Achieved centimeter-level accuracy in vehicle distance detection.
  • Demonstrated the effectiveness of the proposed scheme in experimental validation.
  • Showcased the system's capability to provide crucial traffic target information.

Conclusions:

  • The proposed automated vehicle distance detection scheme significantly enhances traffic safety.
  • This technology is vital for enabling V2X communication at holographic intersections for intelligent connected vehicles (ICVs) and autonomous vehicles.
  • The system offers a robust solution for real-time roadside data acquisition in smart transportation infrastructure.