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Development of an Audio-based Virtual Gaming Environment to Assist with Navigation Skills in the Blind
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Echo-Enhanced Embodied Visual Navigation.

Yinfeng Yu1,2, Lele Cao1,3, Fuchun Sun4

  • 1Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China.

Neural Computation
|March 21, 2023
PubMed
Summary
This summary is machine-generated.

Echo-enhanced embodied visual navigation (E3VN) uses auditory signals to improve robot navigation in poor visibility. This approach enhances perception and achieves robust performance in challenging environments.

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Area of Science:

  • Robotics
  • Artificial Intelligence
  • Computer Vision

Background:

  • Visual navigation for robotic agents typically relies on vision sensory input.
  • Performance degrades significantly in suboptimal visual conditions like poor illumination.
  • Traditional methods struggle to maintain effectiveness when visibility is compromised.

Purpose of the Study:

  • To develop a novel approach for robust visual navigation under poor visibility conditions.
  • To enhance the perception capabilities of robotic agents in challenging environments.
  • To mitigate performance degradation in embodied visual navigation tasks.

Main Methods:

  • Proposed Echo-Enhanced Embodied Visual Navigation (E3VN) system.
  • Integrated an 'echoer' agent using auditory signals for environmental perception.
  • Modeled the robot and echoer as a cooperative Markov game with joint policy optimization.
  • Utilized a two-stream actor-critic architecture for action policy optimization.
  • Adaptively decomposed reward into robot and echoer components during optimization.

Main Results:

  • E3VN demonstrated consistent effectiveness in point goal navigation tasks.
  • The system showed robustness, particularly under nonideal visibility conditions.
  • Ablation studies confirmed the contribution of the echoer and auditory perception.

Conclusions:

  • E3VN significantly improves robotic navigation performance in low-visibility scenarios.
  • The integration of auditory perception provides a robust solution for challenging visual environments.
  • The cooperative game framework and joint optimization are key to E3VN's success.