Calibration of an instrument
US6497134B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2000 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Mar 15, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3983
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for calibrating an error between the location of a feature of an object as determined by indirect calculation compared to as determined by physical measurement in order to be able to use this determined error to correct the location of the feature as determined by calculation in actual use in the field. This error is found by calculating the position and orientation of the object, having energy emitters disposed thereon, in a plurality of orientations and positions relative to a reference frame, but with the feature in a substantially constant position relative to the reference frame; calculating the locations of the feature of the object from these calculated positions and orientations; averaging these calculated locations; determining the location of the feature by physical measurement thereof in relation to the physical locations of the emitters; and comparing the calculated average location with the physically measured loacation to arrive at the error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.