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Confusion about camera rotation documentation #638

@ThomasSchnapka

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@ThomasSchnapka

The procedural data provider doc states:

Internally, MapillaryJS operates in a local topocentric East, North, Up (ENU) reference frame.

[...]

In our procedural provider we want all cameras to look to north, so we use the [Math.PI / 2, 0, 0] angle-axis rotation for the camera reference to world reference frame transform.

As I understand angle-axis rotations, [Math.PI / 2, 0, 0] corresponds to a rotation by π/2 around the X-axis, which is the East-axis in ENU, whereas a rotation to North would be [0, 0, -Math.PI / 2]. Could you elaborate on how the rotation is defined here?

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