https://github.com/wheaney/magnetometer-calibrate

Generate hard iron offsets and soft iron matrix from raw magnetometer samples
https://github.com/wheaney/magnetometer-calibrate

calibration ellipsoid-fit imu imu-sensor magnetometer magnetometer-calibration

Last synced: about 2 months ago
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Generate hard iron offsets and soft iron matrix from raw magnetometer samples

• Host: GitHub
• URL: https://github.com/wheaney/magnetometer-calibrate
• Owner: wheaney
• License: gpl-3.0
• Created: 2024-11-13T16:59:16.000Z (about 2 months ago)
• Default Branch: main
• Last Pushed: 2024-11-13T18:15:42.000Z (about 2 months ago)
• Last Synced: 2024-11-13T18:25:35.353Z (about 2 months ago)
• Topics: calibration, ellipsoid-fit, imu, imu-sensor, magnetometer, magnetometer-calibration
• Language: C
• Homepage:
• Size: 15.6 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# magnetometer-calibrate

This library provides a C API for collecting raw magnetometer samples and generating hard iron offset and soft iron matrix calibrations using Qingde Li and John G. Griffiths's Ellipsoid Fitting algorithm. Requires the [GSL](https://www.gnu.org/software/gsl/) library.

## Relevant Links

* [Least Squares Ellipsoid Specific Fitting](https://www.researchgate.net/profile/Qingde-Li/publication/4070857_Least_squares_ellipsoid_specific_fitting/links/565c4e3e08aefe619b252553/Least-squares-ellipsoid-specific-fitting.pdf) original publication

* [MATLAB demonstration](https://www.mathworks.com/matlabcentral/fileexchange/23377-ellipsoid-fitting) files

* [MagCal C# implementation](https://github.com/hightower70/MagCal/blob/master/Program.cs)

* [Magneto C explanation](https://sites.google.com/view/sailboatinstruments1/d-implementation), [full C reference](https://sites.google.com/view/sailboatinstruments1/g-c-language-implementation), and [.exe download](https://sites.google.com/view/sailboatinstruments1/a-download-magneto-v1-2) (works well on Linux with `wine`)