Long range lidar-based speed estimation
US11921212B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2022 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Nov 17, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06N3/0464
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A LIDAR-based method of determining an absolute speed of an object at a relatively longer distance from an ego vehicle, including: estimating a self speed of the ego vehicle using a first frame t−1 and a second frame t obtained from a LIDAR sensor by estimating an intervening rotation θ about a z axis and translation in orthogonal x and y directions using a deep learning algorithm over a relatively closer distance range; dividing each of the first frame t−1 and the second frame t into multiple adjacent input ranges and estimating a relative speed of the object at the relatively longer distance by subsequently processing each frame using a network, with each input range processed using a corresponding convolutional neural network; and combining the estimation of the estimating the self speed with the estimation of the estimating the relative speed to obtain an estimation of the absolute speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.