Methods and systems for 3D ball trajectory reconstruction
US11045705B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2020 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Mar 19, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30241
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for 3D ball trajectory reconstruction are disclosed. The methods and systems perform steps of receiving a 2D ball trajectory, a shooter's on-ground foot location, and a camera projection matrix; generating on-ground trajectory line assumptions based on the shooter's on-ground foot location and the 2D trajectory; reconstructing a candidate 3D trajectory for each on-ground trajectory line assumption, by determining a ball height for each on-ground projection point in the on-ground trajectory line and by curve fitting; evaluating each candidate 3D trajectory and selecting one with a best score as the reconstructed 3D ball trajectory. Embodiments of the present invention enable a resource-limited mobile device such as a smartphone to conduct the aforementioned steps. Also disclosed are benefits of the new methods, and alternative embodiments of implementation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.