Hello Frederick, thank you for your interest. The data I gathered was all by holding the Raspberry Pi and Arduino with my hand at chest level. The Raspberry Pi runs Mathematica and reads the data from the Arduino, since Mathematica can handle data easily, you can program it to upload to DataDrop or you could save it in a file, and later on extract the files to work on your computer.
Since both the raspberry pi and the arduino are small devices they could be held by a chest band (or something like the bands that hold your phone securely attached to your arm while you go running). It can be placed anywhere on the body. I chose to place it at chest level because the data would be more universal, meaning that there would be less noise on the data due the particular way a person moves.
(In order to transfer the data and control the devices from my computer I used PuTTY to connect wirelessly to the Raspberry Pi. Also, I needed a WiFi dongle for the Raspberry)
The classify function just tells you what motion the data is showing, that is its main goal. But besides classifying the data into motion categories, the data could also be processed to estimate the energy consumed for each motion based on the intensity and frequency.
If you are interested in replicating the experiment I would be happy to send you the data I gathered, and all the specifications of the devices I used. I encourage you to get more data though, this would make the classify function more precise.
I am open to any suggestions, and if you are interested in making the image processing part of this project work, I think that would make a very interesting product. It could be a program that analyzes movement (energy consumption, velocity) and categorizes it. I can also send some of the code that I started to extract information from the images. Tell me if you are interested in this, we could keep discussing this matter as an addition to the main project.
Lastly, please do tell if you want me to explain something specific about the project. Unfortunately it is not very easy sharing all the data and visualizations through the community but I will try my best. I can also send you the classify function.
Pablo
