Not sure if this is the right place for my question but let me give it a try. I have a very simple analog sensor (piezo transducer) which is attached to a microcontroller. I'm using this sensor to detect gestures (hand movements). The mCU sends the sensor data to my PC where I'm running a simple application that plots the data to a graph. In this graph the human eye and brain can recognize easily which gesture is present on the graph, but, of course, the computer has to recognize it as well.
I'm looking for an algorithm or at least a starting point I can detect these gestures. I'm very new to this field so any advice or information would be a great help.
Here you can see a sample screenshot of the graph with two different gestures:
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