EKF-based self-attitude estimation with DNN learning landscape information
| Autor: | Ryota Ozaki, Yoji Kuroda |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Attitude estimation
Mobile robotics Deep learning Extended Kalman filter Technology Mechanical engineering and machinery TJ1-1570 Control engineering systems. Automatic machinery (General) TJ212-225 Machine design and drawing TJ227-240 Technology (General) T1-995 Industrial engineering. Management engineering T55.4-60.8 Automation T59.5 Information technology T58.5-58.64 |
| Zdroj: | ROBOMECH Journal, Vol 8, Iss 1, Pp 1-12 (2021) |
| Druh dokumentu: | article |
| ISSN: | 2197-4225 |
| DOI: | 10.1186/s40648-021-00196-3 |
| Popis: | Abstract This paper presents an EKF-based self-attitude estimation with a DNN (deep neural network) learning landscape information. The method integrates gyroscopic angular velocity and DNN inference in the EKF. The DNN predicts a gravity vector in a camera frame. The input of the network is a camera image, the outputs are a mean vector and a covariance matrix of the gravity. It is trained and validated with a dataset of images and corresponded gravity vectors. The dataset is collected in a flight simulator because we can easily obtain various gravity vectors, although the method is not only for UAVs. Using a simulator breaks the limitation of amount of collecting data with ground truth. The validation shows the network can predict the gravity vector from only a single shot image. It also shows that the covariance matrix expresses the uncertainty of the inference. The covariance matrix is used for integrating the inference in the EKF. Flight data of a drone is also recorded in the simulator, and the EKF-based method is tested with it. It shows the method suppresses accumulative error by integrating the network outputs. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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