OCR of playing cards in a video stream

I investigating if there is a not to complicated project to have a camera mounted above a bridge table and identify played cards from the feed. A lot of bridge tournaments are broadcasted on-line but it demands a person to sit wi开发者_如何学Goth a laptop and click ever card being played and is a tedious job :)

There are 4 players and my thought was to have a marked area for card to be played in before registered.

A few things I'm thinking of.

By using a marked for played card OCR has only have to be made in few occasions but can I reach a 100% success rate? Will I need some uber machine to handle the OCR calculations and is there fast enough routines for what I want done?

Would be nice to hear your input, suggestions and if you have any experience and ideas!

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You may use an Image Correlation. It's fast and precise enough.

Example in Mathematica identifying the suit (the same can be done for the value):

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Will something like this work? https://vimeo.com/3563858