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scivi-tools / scivi.ue.eye

Unreal Engine component for eye tracking with HTC Vive Pro Eye
MIT License
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What SDK do you use #1

Open EricPengShuai opened 3 years ago

EricPengShuai commented 3 years ago

Recently I'm exploring how to get eye position data when watching 360° videos in HTC Vive Pro Eye. I have tried Tobii Pro and OpenVR SDK, but have not obtained complete data.

icosaeder commented 3 years ago

We are using SRanipal SDK: https://developer.vive.com/resources/vive-sense/sdk/vive-eye-and-facial-tracking-sdk/ Which data do you want to retrieve? This is how we get the eye gaze info: FFocusInfo focusInfo; FVector gazeOrigin, gazeTarget; bool hit = USRanipalEye_FunctionLibrary::Focus(GazeIndex::COMBINE, 1000.0f, 1.0f, m_camera, ECollisionChannel::ECC_WorldStatic, focusInfo, gazeOrigin, gazeTarget); This gives us the user's head center position (gazeOrigin) and the gaze hit point (focusInfo.point). Also, we can check if the user looks at a certain object (hit && focusInfo.actor == desiredObjectPtr).

пт, 17 сент. 2021 г. в 07:44, Shuai Peng @.***>:

Recently I'm exploring how to get eye position data when watching 360° videos in HTC Vive Pro Eye. I have tried Tobii Pro and OpenVR SDK, but have not obtained complete data.

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EricPengShuai commented 3 years ago

@icosaeder Thank you for your reply. Could you give me advice on how to run your code to get eye gaze info. Can this code ReadingTracker/Stimulus.cpp get eye gaze info? Do you try it with HTC Vive Pro Eye device?

icosaeder commented 3 years ago

Yes, Stimulus.cpp is the main file where the actor is implemented, that catches the user's gaze. And yes, we use HTC Vive Pro Eye device as VR headset. The idea of what we are doing is described here: http://sv-journal.org/2021-2/04/ Basically, we have a pretty simple UnrealEngine-based scene, where we place a kind of a whiteboard with the short text, and the aim is to track the user's eyes while the user reads that text. AStimulus class (implemented in Stimulus.cpp) represents this whiteboard. Do you use Unreal/Unity to manage your virtual scene? If you are using Unreal Engine as we do, I can provide instructions on how to get HTC Vive Pro Eye and SRanipal SDK working (the official guide lacks some details about the project settings you need to tweak to get it working).

пт, 17 сент. 2021 г. в 12:27, Shuai Peng @.***>:

@icosaeder https://github.com/icosaeder Thank you for your reply. Could you give me advice on how to run your code to get eye gaze info. Can this code ReadingTracker/Stimulus.cpp https://github.com/scivi-tools/scivi.ue.eye/blob/e9cc04322e835b3940fd9e69b9daa2bb765d883b/ReadingTracker/Stimulus.cpp get eye gaze info? Do you try it with HTC Vive Pro Eye device?

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