[Vive_SRWorks.exe crashes]

v0.8.0.2 does not support Turing Arch. yet. Refer to this thread, 

 

 

[SRanipal causes Prepar3d to crash]

Need Prepar3d to integrate the latest SRanipal SDK.

[Can't complete SRWorks setup]

Suggest to Unity 2017.

[SRanipal causes Prepar3d to crash]

Due to v0.7.0.0 is not even compatible with the commercial Vive Pro Eye, it may not be helpful.

[VOVE Pro Eye Tracking data collection]

Here is SRanipal SDK, https://developer.vive.com/resources/knowledgebase/vive-sranipal-sdk/, for your purpose, especially enclosed Unity plugin may be for your C# interest.

[Pro eye unsuitable for research - data SUPER heavily filtered during fixation.]

yes, we are working on it.

[What are "tracking improvements" ?]

It is not related to filtering. It contains certain index for internal use only.

[Pro eye unsuitable for research - data SUPER heavily filtered during fixation.]

It is under clarification for this symptom.

[Pro eye unsuitable for research - data SUPER heavily filtered during fixation.]

From your video, the major factor contributes the oscillation would be the latency between head movement and eye tracker, The other one may be  gaze beyond FOV  20° .

[A couple of questions about Focus() and Accuracy]

Refer to VIVE PRO EYE SPECS for accuracy in https://www.vive.com/eu/product/vive-pro-eye/.

gaze_ray_paramete set by SetEyeParameter() defines the sensitive factor of gaze ray in [0,1] .

where 1 means it is raw gaze vector w/o adding a filter post-processing for gaze tremble and 0 means it is post processed with strongest filter to remove gaze tremble.

[Pro eye unsuitable for research - data SUPER heavily filtered during fixation.]

Double confirmed. It is documented in SDK document. keyword searching for SetEyeParameter though the description is as same in code.

Refer to VIVE PRO EYE SPECS for accuracy in https://www.vive.com/eu/product/vive-pro-eye/.

[Losing eye tracking if headset turns off during Unity, despite successful recalibration]

Does it only happen by using wireless case?

[Vive Pro Eye Extract Salience Map]

In VR, you could collect the hit rate of gaze raycast to certain objects.

[A couple of questions about Focus() and Accuracy]

To follow up the question regrading SetEyeParameter(). 

There is an filter added to the gaze vector to prevent from gaze tremble, ex. when look at far distance in some use cases.  The sensitive factor is contrast to the filter's strength. 

Would suggest to use ViveSR::anipal::Eye::VerboseData.combined for gaze raycast. 

[SRanipal causes Prepar3d to crash]

version 0.7.0.0 is an early access version which is not compatible with v1.0 formal release and no longer maintain it.  

[Vive Pro Eye: Finding a single eye origin in world space]

Post again. it will be included in later SDK document.

[Unity: Only show objects within certain distance]

Basically, for your referral Realsense example, you could create a mask from depth map according to your ROI distance, and then apply this mask to the undistorted left-eye image in the image center. 

[Unity: Only show objects within certain distance]

You could adjust the near and far range as the enclosed figure to select your ROI distance.

 

[Improving Eye Tracking Accuracy]

1. Yes, you need to lauch  eye tracking calibration from VR dashboard first.

2. refering this thread for coodinate explaination, https://community.viveport.com/t5/Vive-SRanipal-SDK/Vive-Pro-Eye-Finding-a-single-eye-origin-in-world-space/m-p/31592#M10

3. Refering to eye tracking accuracy in VIVE PRO EYE SPECS, https://www.vive.com/eu/product/vive-pro-eye/

4. Combined gaze may be more fit your use scenario.

 

[How to get an movement of pupils in real worls's distance unit or angle unit by VIVE Pro Eye?]

Refering to this thread, https://community.viveport.com/t5/Vive-SRanipal-SDK/Vive-Pro-Eye-Finding-a-single-eye-origin-in-world-space/m-p/31592#M10.

[XR SDK can be used with VIVE (one camera)?]

 

SRWorks needs dual-cam such as Vive Pro, Vive Pro Eye.

Thre is a sample  in SteamVR Unity plugin at $(SteamVR)\Extras\SteamVR_TestTrackedCamera.unity showing how to access front cam on Vive

[SteamVR 2.2.0]

- It will be supported in next release.

[Eyetracking dummy data mode for debugging]

Currently, if HMD is not Vive Pro Eye, Unity plugin will provide a fixed eye gaze according to HMD movemt.

[Running SR_Runtime without admin]

will verify this. Thank you.

[Eye Confidence]

A eye_data_validata_bit_mask defined in struct SingleEyeData to indicate which data's validness listed below. Usually, the data becomes invalid when eye closed.

 

enum SingleEyeDataValidity {

SINGLE_EYE_DATA_GAZE_ORIGIN_VALIDITY,/*!<The validity of the origin of gaze of the eye data */

SINGLE_EYE_DATA_GAZE_DIRECTION_VALIDITY,/*!<The validity of the direction of gaze of the eye data */

SINGLE_EYE_DATA_PUPIL_DIAMETER_VALIDITY,/*!<The validity of the diameter of gaze of the eye data */

SINGLE_EYE_DATA_EYE_OPENNESS_VALIDITY,/*!<The validity of the openness of the eye data */

SINGLE_EYE_DATA_PUPIL_POSITION_IN_SENSOR_AREA_VALIDITY/*!<The validity of normalized position of pupil */

};