Realtime Responsive Typography Based on Viewing Distance via Webcam

What do you have to assume about e.g. user monitor ppi and webcam field of view to make this work?

This is an impressive demo however I usually move my face closer to the screen because the font is too small.

It would be neat to see a demo of parallax using a webcam.

Great idea, a couple of small improvements would make it even better:

* Use a moving average, to avoid flickery transitions

* Animate the text to the target size rather than changing in steps. This would mitigate the flickering problem too.

Neat, clicking through the attributions, Headtrackr (https://github.com/auduno/headtrackr/) by auduno of Opera Software looks quite useful. That's in turn based on ccv (https://github.com/liuliu/ccv), which I knew about, but Headtrackr looks much nicer to use if you just want headtracking out of the box. It does some trigonometry, based on some assumptions about field of view, to provide the 3d coordinate estimates needed for demos like this, whereas ccv focuses on object identification/tracking within the 2d image (and is much more general, so more complex to use out of the box).

The Headtrackr guy also put up a demo of a game controlled using head movement: http://www.shinydemos.com/facekat/

I'm mostly impressed by the image analysis. Performance and the fact that it runs on javascript. Well I've heard of ccv.js before but not seen it's capabilities for pixel analysis. Now I have even less excuses to reimplement that broken real time image analysis app that I made for my bachelor thesis.

Hmm, there are no explicit licence terms in the repositories of ccv or headtrackr though. :/