Chapter 28

Lessons in False-Gesture Recognition


Understanding errors, learning from user errors, fine-tuning gestures, false negatives, false positives

Abbott: Well, let’s see, we have on the bags, Who’s on first, What’s on second, I Don’t Know is on third…

Costello: You don’t know the fellows’ names?

Costello: Well then who’s on first?

Abbott: Yes.

Costello: I mean the fellow’s name.

Abbott: Who.

Costello: The guy on first.

Abbott: Who.

Costello: The first baseman.

Abbott: Who.

Costello: The guy playing…

Abbott: Who is on first!


Recognition errors are instances where your software will trigger recognition of a gesture where none was intended (which we term false-positive errors), or where the user intends to perform ...

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