Recognize numbers using gestures

I want to recognize numbers using gestures through coding. I've reco开发者_运维百科gnized using gesture library. Is there any possibility to recognize numbers perfectly?

Please suggest any sample code.

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What do you mean by perfectly? As in successfully detect the number the user intended to gesture 100% of the time? As long as your users are human, this isn't possible. 4 can look like 9, 1 can look like 7, and depending on how quickly they swipe, what started out as a 0 can end up looking like a 6 (or vice versa). Every individual gestures differently than everyone else, and every time you gesture a 4, it's going to look just a little more or less different from your 9, as well as all your other 4's.

One possible solution is to have your app contain a "learning mode" which asks the user to gesture out a specific digits several times, so that you can pick up on patterns (where they start, where they stop, how many swipes are included, how big it is), and use those to narrow things down when the app is actually used. Sort of like a good spam filter- It won't get you 100% detection rate, but it'll definitely get you a lot closer than not having a data set to work off of.