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Re: [magnetometer] Provide API to access uncalibrated magnetometer values

From: Rijubrata Bhaumik via GitHub <sysbot+gh@w3.org>
Date: Tue, 08 Nov 2016 09:41:17 +0000
To: public-device-apis-log@w3.org
Message-ID: <issue_comment.created-259090270-1478598075-sysbot+gh@w3.org>
Bias = hard_Iron bias, distortion of magnetic field strength due to 
presence of magnet or similar material.
So [x,y,z] = magnetic field (without hard-iron compensation), and 
[x_bias, y_bias, z_bias] are the estimated hard-iron bias along the 3 
axes.
We can then think, _uncalibrated = _calibrated + _bias. 
For the VR use case, presence of magnet will affect the bias values, 
and developer can take some action.

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Received on Tuesday, 8 November 2016 09:41:23 UTC

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