This paper presents an algorithm which extends the rapidly-exploring random tree (RRT) framework to deal with change of the task environments. This algorithm called the Retrieval RRT Strategy (RRS) combines a support vector machine (SVM) and RRT and plans the robot motion in the presence of the change of the surrounding environment. This algorithm consists of two levels. At the first level, the...

Challenges persist in nonholonomic robot navigation for dynamic environments. This paper presents a framework for nonholonomic robot navigation in dynamic environment based on the model of Generalized Velocity Obstacles (GVO). The idea of velocity obstacles has been well studied and developed for obstacle avoidance since proposed in 1998. Though proved to be successful, most studies assume equa...

For an environment to be well suited for wheelchair use not only should it be sufficiently clear of obstacles so that the wheelchair can navigate it, it should also be properly designed so that critical devices such as light switches can be reached by the hand of the wheelchair user. Given a goal location, explicitly calculating a path of the wheelchair and the person sitting in it so that they...