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SRanipal eye tracking C++ API does not reach 120 Hz sampling frequency(1.3.2.0 runtime and 1.3.3 SDK, win10 pro, i7-10700k, 3060ti)


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Hi everyone,

I can only get data of about 60Hz using c++ eye tracking API. I just used the callback of the C++ sample project and modified main.cpp.

The attached are the modified script  and one of data collected  by us.

Here are  software and hardware relevant details:

  • 1.3.2.0 runtime and 1.3.3 SDK
  •  win10 pro, CPU: i7-10700k, GPU: 3060ti

Looking forward to your reply, thanks!

 

Sub_testv_Time_1_2021_9_14_18_16.csv

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And another question, I want to collect the eye movement data of the participants while playing the VR game, which means that the eye data collection program needs to be run separately. Is C++ api the only way?

Sorry to disturb you, do you have any comments, @Corvus?

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It’s because I added this to get the system time and cause the problem:

error = ViveSR::anipal::Eye::SRanipal_GetSystemTime(&system_t);

 

Use the callback of C++ sample project provided by Vive can obtain 120Hz data... 

 

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