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Experiments for object tracking - nefft0n - 03-01-2022

Hey all,

I'm in the final part in my Master of Education in Computer Science and currently working on my master's thesis, Sebastian is one of my supervisors.
The idea is to use the camera of the phone and implement object tracking, for example to track the mass of a spring pendulum.

Unfortunately we can give you no guarantee this will work at the end and can be added in phyphox, but I will give my best. Smile

Since I'm not a teacher yet, it would be very helpful if the community could help me by compiling a list of experiments, where object tracking could be useful.
So please write all the ideas you have in the comments!
I will construct some test setups here at the university, which can be recorded as video and then used to test the code.

I'm aware that this post gives not much technical background or limitations regarding the experiments, but I am very interested in open ideas!


RE: Experiments for object tracking - heilaut - 03-18-2022

I use video analysis very often in my physics classes. I currently use the software Tracker. I introduce the method mostly in kinematics when the movement is too fast to measure it in other ways easily.
When the students are familiar with the method I go further.
Here are a few examples I have done in my classes.

- track the motion of real objects like cars, rollercoasters, trams, bikes, etc. - Determination of the type of movement and the parameters of the movement

- free fall - measurement of the gravitational acceleration
- falling objects with air friction (paper cones) - measurement the air resistance
- any kind of projectile motion, especially to show the superposition of the motion in two dimensions and determine the parameters

- conservation of momentum - collision experiments to measure the conservation of momentum and energy

If it is of interest to you, I can provide you with some examples of jobs I have used to give you an idea of the implementation and requirements. (in german)

It would be great if such a function would become part of phyphox. This could make the process of analysis much easier. However, the implementation of a good operation on mobile devices is certainly a challenge.

RE: Experiments for object tracking - nefft0n - 03-29-2022


thank you for the list of experiments! The free fall measurements where not on my radar yet.
And thanks also for the offer of examples, I will come back to it, if I need some ideas Smile

RE: Experiments for object tracking - fbouquet - 03-30-2022


Ah, an object tracking would be great...

I am also using video analysis with students (with the fizziq app). A lot of free falls and trajectories as already mentioned. Also, the trajectory of a rotating stick (trajectory of the center of gravity and velocity of rotation).

Good luck, and looking forward to the result,



RE: Experiments for object tracking - Jens Noritzsch - 03-30-2022

I have just come across this thread: – some ideas and convenient features…