Behavioral dynamics of steering, obstacle avoidance, and route selection.
Behavioral dynamics of steering, obstacle avoidance, and route selection.
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DOI：
10.1167/1.3.184
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发表时间：
2003-04
期刊：
影响因子：
--
通讯作者：
B. Fajen;W. H. Warren
中科院分区：
文献类型：
--
作者：
B. Fajen;W. H. Warren
作者研究了转向和避障的动力学，目的是预测复杂场景中的路线。参与者在虚拟环境中走向目标（实验 1）并绕过初始角度和距离不同的障碍物（实验 2）。目标和障碍物分别充当航向的吸引子和排斥子，其强度取决于距离。观察到的行为被建模为一个动态系统，其中角加速度是目标和障碍物角度和距离的函数。通过线性组合目标和障碍物的术语，我们可以预测参与者是否会选择障碍物左侧或右侧的路线来到达目的地（实验 3）。路线选择可能来自在线转向动力学，使得明确的路径规划变得不必要。
The authors investigated the dynamics of steering and obstacle avoidance, with the aim of predicting routes through complex scenes. Participants walked in a virtual environment toward a goal (Experiment 1) and around an obstacle (Experiment 2) whose initial angle and distance varied. Goals and obstacles behave as attractors and repellers of heading, respectively, whose strengths depend on distance. The observed behavior was modeled as a dynamical system in which angular acceleration is a function of goal and obstacle angle and distance. By linearly combining terms for goals and obstacles, one could predict whether participants adopt a route to the left or right of an obstacle to reach a go (Experiment 3). Route selection may emerge from on-line steering dynamics, making explicit path planning unnecessary.