make it easier for users to learn why it is "-90 - 12" for scene->to-…

…>imu
pupil-labs · Jul 26, 2024 · 3e9d5bb · 3e9d5bb
1 parent 2fa58eb
commit 3e9d5bb
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/alpha-lab/imu-transformations/index.md b/alpha-lab/imu-transformations/index.md
@@ -165,6 +165,8 @@ def gaze_scene_to_world(gaze_elevations, gaze_azimuths, imu_quaternions):
 
   # The IMU and scene camera coordinate systems have a fixed
   # 102 degree rotation offset.
+  # See:
+  # https://docs.pupil-labs.com/neon/data-collection/data-streams/#movement-imu-data
   imu_scene_rotation_diff = np.deg2rad(-90 - 12)
 
   # This matrix send points in the scene camera coordinate