Daniel_Y Posted March 12, 2020 Share Posted March 12, 2020 There is no direct angle mapping between pupil position in sensor and gaze vector. Pupil position in sensor is mainly used for positioning HMD up/down/left/right in calibration process to make user's eyes in correct position, i.e.: make pupil in the center of sensor. Link to comment Share on other sites More sharing options...
imarin18 Posted March 12, 2020 Author Share Posted March 12, 2020 Dear @Daniel_Y Thank you very much for your reply and the explanation. I understood. Is my understanding correct for the calculation of angle in degrees from the data of gaze vector, following the trigonometric functions? Best regards, imarin18 Link to comment Share on other sites More sharing options...
Daniel_Y Posted March 12, 2020 Share Posted March 12, 2020 Yes, you did. Here is an illustration may offer clearer explanation, https://math.stackexchange.com/questions/2247039/angles-of-a-known-3d-vector Link to comment Share on other sites More sharing options...
imarin18 Posted March 12, 2020 Author Share Posted March 12, 2020 Dear @Daniel_Y Thank you very much for your reply and the explanation. I understood. Best regards, imarin18 Link to comment Share on other sites More sharing options...
xuemeizhou Posted November 1, 2022 Share Posted November 1, 2022 Dear @Daniel_Y Hello, how I can convert the Pupil position to HMD coordinate system, cause I now I have to compare my method with other peaple, and they did not provide the gaze origin and gaze direction in their collected data. I need to know the gaze origin and gaze direction in order to compute the position in global coordinate system. They used HTC VIVE PRO. Link to comment Share on other sites More sharing options...
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