NDLI: Mobile robot navigation amidst humans with intents and uncertainties: A time scaled collision cone approach

Content Provider	IEEE Xplore Digital Library
Author	Nagariya, Akhil Gopalakrishnan, Bharath Singh, Arun Kumar Gupta, Krishnam Krishna, K. Madhava
Copyright Year	2015
Description	Author affiliation: Robotics Research Center, IIIT-Hyderabad India (Nagariya, Akhil; Gopalakrishnan, Bharath; Gupta, Krishnam; Krishna, K. Madhava) \|\| Bio-Medical Robotics Lab, BGU, Israel (Singh, Arun Kumar)
Abstract	We propose a novel collision avoidance formulation in the intent space, suitable for navigation of non-holonomic robots in human centered environments. The intent space is characterized by various bands of trajectories wherein each band can be thought to be a representation of a possible human intended motion and the uncertainty associated with it. We ascribe probabilities to human intentions and characterize the uncertainty around it through Gaussian state transition and its concomitant Gaussian parametric distribution. Given an intent space we design avoidance maneuvers based on our recent works on time scaled collision cone concept which provides analytical characterization of collision free velocities in dynamic environments. In this paper, we present a probabilistic variant of the time scaled collision cone which allows us to relate space of collision free velocities to an associated confidence measure. We also develop an optimization framework which extract such specific solutions from the entire solution space that achieves an elegant balance between the objective of minimizing risk and ease of avoidance maneuver. We further show that by accounting for possible intents in human motion, the method transcends the realm of reactive avoidance to proactive anticipation of collisions and its effective avoidance, thereby increasing the overall safety of navigation.
Starting Page	2773
Ending Page	2779
File Size	800032
Page Count	7
File Format	PDF
e-ISBN	9781479978861
DOI	10.1109/CDC.2015.7402636
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-12-15
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Collision avoidance Robots Trajectory Hidden Markov models Probabilistic logic Navigation Uncertainty
Content Type	Text
Resource Type	Article

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