Accurate Eye Tracking with an Infrared Filter

Описание: One small and inexpensive component can dramatically improve performance if you're building an eye tracker is an infrared pass filter.

In this video, I explain what IR pass filters are, how they work, and how to easily install one onto an eye tracking camera.

Parts from the video
Filter x3 ($14): https://amzn.to/4kHmjqI
Infrared camera ($17): https://amzn.to/41x8p2W
HQ infrared camera ($67): https://amzn.to/4nb6eMe

These filters block visible light while allowing infrared wavelengths (typically above 850nm) to pass through, making them ideal for improving pupil detection.

You'll see a side-by-side comparison of tracking with and without the filter, showing how it stabilizes the pupil ellipse and significantly improves the gaze vector estimation.

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