Long story short: My mom passed away from ALS when I was little, I've always wanted to develop something that might improve the lives of others (and potentially myself in the future) with ALS and related diseases, and I'm an iOS developer who has found that there seems to be nothing thus far addressing this issue on iOS devices.
What I'm envisioning is similar to the Hawking-esque characters on screen, but rather than blink when certain characters are lit up, I think it could be nice to be able to look at groups of characters and have the camera detect where you're looking and use that to drill down ultimately to the character, word, etc., desired.
At first blush this doesn't seem too difficult, but then once I start thinking about it I come to the realization that it is absolutely a non-trivial thing to work out - all the math around the angle of gaze, distance from camera, etc...
Does anyone have any information that might lead me in the right direction? Other open-source applications doing something similar, maybe projects that use parts of this, like eye detection + location on screen, and so on... Perhaps other considerations that would make this essentially not doable with the current tech? Anything would help, thanks!
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