velocity weight
Visual tracking brain computer interface
Huang, Changxing, Shi, Nanlin, Miao, Yining, Chen, Xiaogang, Wang, Yijun, Gao, Xiaorong
Brain-computer interfaces (BCIs) offer a way to interact with computers without relying on physical movements. Non-invasive electroencephalography (EEG)-based visual BCIs, known for efficient speed and calibration ease, face limitations in continuous tasks due to discrete stimulus design and decoding methods. To achieve continuous control, we implemented a novel spatial encoding stimulus paradigm and devised a corresponding projection method to enable continuous modulation of decoded velocity. Subsequently, we conducted experiments involving 17 participants and achieved Fitt's ITR of 0.55 bps for the fixed tracking task and 0.37 bps for the random tracking task. The proposed BCI with a high Fitt's ITR was then integrated into two applications, including painting and gaming. In conclusion, this study proposed a visual BCI-based control method to go beyond discrete commands, allowing natural continuous control based on neural activity.
- Research Report > Experimental Study (0.96)
- Research Report > New Finding (0.95)
- Health & Medicine > Health Care Technology (0.67)
- Health & Medicine > Therapeutic Area > Neurology (0.46)
Dual-Weight Particle Filter for Radar-Based Dynamic Bayesian Grid Maps
Ronecker, Max Peter, Stolz, Michael, Watzenig, Daniel
Through constant improvements in recent years radar sensors have become a viable alternative to lidar as the main distancing sensor of an autonomous vehicle. Although robust and with the possibility to directly measure the radial velocity, it brings it's own set of challenges, for which existing algorithms need to be adapted. One core algorithm of a perception system is dynamic occupancy grid mapping, which has traditionally relied on lidar. In this paper we present a dual-weight particle filter as an extension for a Bayesian occupancy grid mapping framework to allow to operate it with radar as its main sensors. It uses two separate particle weights that are computed differently to compensate that a radial velocity measurement in many situations is not able to capture the actual velocity of an object. We evaluate the method extensively with simulated data and show the advantages over existing single weight solutions.
- Europe > Austria > Styria > Graz (0.05)
- North America > United States > Michigan > Wayne County > Dearborn (0.04)
- Europe > Spain > Canary Islands > Gran Canaria > Las Palmas de Gran Canaria (0.04)
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