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Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
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Related Experiment Video

Updated: Aug 30, 2025

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Three-dimensional characterization and calculation of highway space visual perception.

Xingli Jia1, Ye Zhang1, Ao Du2

  • 1School of Highway, Chang'an University, Xi'an, China.

Heliyon
|August 29, 2022
PubMed
Summary

This study quantifies highway spatial characteristics

Keywords:
Field of view radiusHighway engineeringLandscape constructionSpatial enclosure degreeThree-dimensional build-to-line ratioVisual perception

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Area of Science:

  • Environmental Psychology
  • Transportation Engineering
  • Landscape Architecture

Background:

  • Drivers' visual perception is crucial for road safety and experience.
  • Existing methods for assessing highway spatial characteristics lack three-dimensional quantification.
  • Understanding spatial visual depression and continuity is key to effective landscape design.

Purpose of the Study:

  • To develop a 3D quantification method for highway spatial characteristics.
  • To analyze the impact of these characteristics on drivers' visual perception.
  • To propose landscape construction strategies for improved visual continuity and reduced spatial depression.

Main Methods:

  • Utilized spatial perception theory and hemispherical field of view.
  • Developed an improved spatial enclosure calculation method using "Distance/Height value".
  • Established a 3D quantification model for the build-to-line ratio and applied it to a real-scene highway model.

Main Results:

  • The highway section exhibits undulating landscape space with a lack of visual continuity.
  • Quantitative analysis identified specific sections (0-250m, 500-700m) needing landscape improvement.
  • The proposed 3D methods effectively characterized spatial visual depression and continuity.

Conclusions:

  • Vegetation planting in specific zones can reduce enclosure fluctuations and enhance spatial continuity.
  • The 3D quantification method provides a basis for road space reorganization and landscape improvement.
  • This research offers valuable insights for designing visually engaging and continuous highway environments.