Camera calibration using fiducial markers on surgical tools
US12183038B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Oct 6, 2021 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Oct 6, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30204
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Calibration of parameters of an endoscopic or laparoscopic camera is conducted while the camera is in use capturing images of a surgical procedure at a surgical site. The surgical procedure is performed using a surgical instrument marked with a fiducial pattern. A processor receives image data from images captured by the camera and uses machine vision to detect points of the pattern, and carries out an optimization to determine the 3D pose of the surgical instrument relative to the camera and the camera parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.