Particle tracking with Blender
Here’s an interesting scientific application for Blender: using the motion tracker to do analyse fluid/particle flow.
renatogsousa writes:
Hi all,
Apart from using Blender as a hobby, I also use it professionally whenever needed. In this case I’ve used the motion tracking capabilities to do some particle tracking analysis in microfluidic devices. There is a python script that exports the data from the markers to a .csv file, allowing us to then determine the velocity and trajectory of particles in flows. This tutorial was made for people with no previous Blender experience. Hope it will be helpful for someone else.
Excellent! Thanks for sharing.
You are welcome. Hope it will be useful for someone else.
Really interesting. I want to use for sport motion analysis. It is possible to create only one .csv with all the markers? Thanks,
Gabriel
I believe so with some slight code changes.
Which changes? I do not have any knowledge of python. Thanks!
Dear Renato,
Quiite interesting example. I am.wondering if is it possible to apply a similar method to track markers im 3D space and retrieve its coordinates. I know that some commercial softwares can do it using at least two cameras. Something like that cabe achieved with Blender ?.
Hi Cysorianoc,
I have done in Excel using the DLT algorithm (we have implemented the 11 parameters DLT algorithm). You can read our manuscript:
https://www.sciencedirect.com/science/article/pii/S0263224120311544?casa_token=YdizuqkG1fcAAAAA:joUAhR8U4iFOXRCmwwrzxj64QZZs14lpNHTl8NOkJ_9AjV6mCL7viKWDy74Pxub2gOMUqW_k
I do not have python knowledge but if someone with python knowledge is interested we could implement the algorithm in Blender (if it is not just implemented)
Regards,
GAbriel