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jdibenes / hl2ss

HoloLens 2 Sensor Streaming. Real-time streaming of HoloLens 2 sensor data over WiFi. Research Mode and External USB-C A/V supported.
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co-ordinate system and timestamp for Extended Eye Tracking #116

Closed aipsita closed 4 months ago

aipsita commented 4 months ago

Hello. I am new to eye tracking technology. I want to analyze eye tracking data captured from the Hololens 2 using client_stream_eet.py. The data I record is saved as shown below. Eye_Tracking_Data

I am trying to convert the eye gaze co-ordinates (origin, direction) from device coordinate to world coordinate system. Is this the correct approach? Coordinate

Also I wanted to confirm if the timestamp resolution is 100 ns. I am using 90 FPS.

Thank you so much.

jdibenes commented 4 months ago

Hello, device to world conversions: origin: [x,y,z,1]@pose direction: [x,y,z]@pose[:3,:3] yes, timestamp resolution is 100 ns

aipsita commented 4 months ago

Thank you so much.