2026-06-06T03:12:07Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/333062026-02-03T11:04:00Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Pérez del Pulgar, Carlos J. author Smisek, Jam author Rivas-Blanco, Irene author Schiele, Andre author Muñoz-Martínez, Víctor Fernando author 2019 Haptic guidance is a promising method for assisting an operator in solving robotic remote operation tasks. It can be implemented through different methods, such as virtual fixtures, where a predefined trajectory is used to generate guidance forces, or interactive guidance, where sensor measurements are used to assist the operator in real-time. During the last years, the use of learning from demonstration (LfD) has been proposed to perform interactive guidance based on simple tasks that are usually composed of a single stage. However, it would be desirable to improve this approach to solve complex tasks composed of several stages or gestures. This paper extends the LfD approach for object telemanipulation where the task to be solved is divided into a set of gestures that need to be detected. Thus, each gesture is previously trained and encoded within a Gaussian mixture model using LfD, and stored in a gesture library. During telemanipulation, depending on the sensory information, the gesture that is being carried out is recognized using the same LfD trained model for haptic guidance. The method was experimentally verified in a teleoperated peg-in-hole insertion task. A KUKA LWR4+ lightweight robot was remotely controlled with a Sigma.7 haptic device with LfD-based shared control. Finally, a comparison was carried out to evaluate the performance of Gaussian mixture models with a well-established gesture recognition method, continuous hidden Markov models, for the same task. Results show that the Gaussian mixture models (GMM)-based method slightly improves the success rate, with lower training and recognition processing times. Pérez-del-Pulgar, C.J.; Smisek, J.; Rivas-Blanco, I.; Schiele, A.; Muñoz, V.F. Using Gaussian Mixture Models for Gesture Recognition During Haptically Guided Telemanipulation. Electronics 2019, 8, 772. https://hdl.handle.net/10630/33306 10.3390/electronics8070772 Aprendizaje automático Visión por ordenador Using Gaussian Mixture Models for Gesture Recognition During Haptically Guided Telemanipulation.