This can be answered using the following measurements:
Eye Camera exposure time (8 ms) + transmission time (8 ms) + processing time (4 ms)
Therefore, the current latency of FOVE Eye Tracking is 20 ms.
In practice, the total latency becomes:
20 ms
+ however long it takes the application to use the eye tracking data and update
+ however long it takes the screen to render the next frame of the application
Which is more in the range of ~50 milliseconds for a complete turnaround from eye movement, to application reaction, to new image being displayed on the screen. However, that actually eye tracking coordinates are available much sooner than the complete turnaround time.
FOVE視線追跡の待ち時間は?
この質問には下記の計算によって答えることができます:
視線カメラの露光 (8ミリ秒) + 情報伝達 (8ミリ秒) + 解析 (4ミリ秒)
つまり、現在のFOVE視線追跡の待ち時間は20ミリ秒です。
実用上、待ち時間の合計は次のようになります:
20ミリ秒
+ 視線追跡データをアプリケーションが処理・更新するための時間
+ スクリーンがアプリケーションの次のフレームを表示するための時間
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