Method and apparatus for eye tracking latency reduction
A method for enhancing the performance of an eye position measurement system, said method comprising: based on a measurement of past eye positions, calculating a prediction of a future eye position; using said calculated prediction of a future eye position for reducing the latency effect of said eye position measurement system.
1. A method for enhancing the performance of an eye position measurement system, said method comprising:
based on a measurement of past eye positions, calculating a prediction of a future eye position;
using said calculated prediction of a future eye position for reducing a latency effect of said eye position measurement system;
using said prediction of a future eye position in connection with a system for ophthalmic surgery and/or diagnosis for compensating for an eye movement, wherein said calculating a prediction of a future eye position includes a prediction interval corresponding to a processing time of said eye position measurement system to determine the position of the eye and a compensation time of an ophthalmic device performing surgery and/or diagnosis.
2. The method of claim 1 , wherein the prediction is generated for different prediction intervals which are submultiples of an eye-tracking period.
3. The method of claim 1 , further comprising:
comparing a predicted position with a later determined actual position to monitor the quality of said prediction.
4. The method of claim 3 , further comprising:
adapting a prediction calculation used for prediction based on said monitoring result.
5. An apparatus for ophthalmic surgery and/or diagnosis for compensating for an eye movement, said apparatus comprising:
an eye position measurement system including:
a module for measuring past eye positions; and
a module for calculating a prediction of a future eye position, wherein
said calculated prediction of a future eye position is used for reducing the latency effect of said eye position measurement system and wherein said prediction of a future eye position includes a prediction interval that corresponds to a processing time of said eye position measurement system to determine the position of the eye plus a compensation time of an ophthalmic device performing surgery and/or diagnosis.
6. The system of claim 5 , wherein the prediction is generated for different prediction intervals which are submultiples of an eye-tracking period.
7. The system of claim 5 , further comprising:
a module for comparing a predicted position with a later determined actual position to monitor the quality of said prediction.
8. The system of claim 7 , further comprising:
adapting a prediction calculation used for prediction based on said monitoring result.
9. A computer comprising a computer program for enhancing the performance of an eye position measurement system, said computer program comprising:
computer program code for, based on a measurement of past eye positions, calculating a prediction of a future eye position;
computer program code for using said calculated prediction of a future eye position for reducing the latency effect of said eye position measurement system; and
computer program code using said prediction of a future eye position in connection with a system for ophthalmic surgery and/or diagnosis for compensating for an eye movement, wherein said prediction of a future eye position includes a prediction interval that corresponds to a processing time by said eye position measurement system to determine the position of the eye plus a compensation time of an ophthalmic device performing surgery and/or diagnosis.