Comments (1)
I notice that there is a doEyeFlow flag parameter
That won't help. It was for relative motion estimates.
However, i notice that the result is wrong for some frames (for example, the algorithm detect wrong eye positions). How to set eye tracker more robust?
The pipeline basically runs:
face detection -> low resolution refinement -> eye model fitting
You can start by eliminating false positives in the detection stage.
The ACF gradient boosting models are extremely fast for mobile use case, but are limited compared to SOTA CNN models, and can require more tuning. This will probably be updated in the future, or used to enumerate detection hypothesis and paired with a fast/shallow CNN.
There are some simple things you can try.
- Tuning (reducing) the detection search volume to only allow plausible solutions of appropriate scale for your use case is the first step. I.e., try to set the max distance such that you avoid spending lots of time searching for tiny faces that are the size (in pixels) of an eye or nose in your typical true positive cases.
See:
- The ACF detector has a nice formulation with a calibration term that can allow you to set your classification/detection operating point at runtime with existing models. You can try decreasing this in steps with a 0.75x multiplier or similar until you get rid of false positives.
See:
These params could be exposed to the top level app for tuning.
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Related Issues (20)
- mac os/android studio build error HOT 11
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