How to extract gesture segments from real-time accelerometer data?

Hi, I am trying to tract hand movement using accelerometer data. My objective is to extract the segment of the accelerometer data which corresponds to movement (as highlighted in the figure). Also, once I extract this segment, I want to estimate the displacement from it. Can anyone suggest me a method to detect the movement and estimate the displacement? Thanks in advance.

Answer 1

[Image Analyst]

You should check out these discussions:

If you have a signal with one or more varying sections, you can run the code here: http://www.mathworks.com/matlabcentral/answers/231181-extract-and-store-valuable-data-in-vectors#answer_187244

If you have just one variable section: http://www.mathworks.com/matlabcentral/answers/232495-finding-a-maximum-signal-variation-in-matlab