This is a repository made as part of the WaLSA team meeting held in January 2024 at Rosseland Centre for Solar Physics (RoCS) in Oslo, Norway. This tutorial, ``Motion magnification and its application to solar data'', was given by Dr Tim Duckenfield.
For questions, comments please email [email protected].
There are several notebooks in the repository, I suggest starting with start_here.ipynb to get a feel for the the process. Then for further information:
- More detailed explanation behind the underlying DT$\mathbb{C}$WT tranform may be found in understanding_dtcwt.ipynb. I am particularly interested in discussing the potential of using this wavelet transform to enhance the motion of vortices/swirls...
- An explanation of the motion magnification algorithm, its parameters, some historical context, and playing around with magnifying a toy datacube can be found in understanding_mm.ipynb.
- A rough tutorial for downloading some AIA/SDO data, choosing a cutout, and motion magnifying it to search for decayless kink oscillations for yourself may be found in mm_solardata.ipynb
To do this analysis, you need some images, datacubes and movies. Since they are too large to be kept in this repository (cloning this repository would become very sluggish), I have saved some data in a shared Google drive.
You are welcome to log in using my shared drive if you would rather not use your own. The log in details are:
- [email protected]
- walsadtcwt!!
One can use !gdown to download specific files into our current working directly, if one knows the user id. Here is a list of some useful datacubes you may wish to take a look at. I may be biased, but I recommend you motion magnify any with my dog daphne...
- daphne.jpg = 1waPbCvz8Tkhyzzg3f968TDgjxsUaIN_D
- mandrill.npz = 1bDU4_hbyGZZ-HDMEJo591prdwfRwyxOl
- sergey.mp4 = 1l8HjifR4t52D16tx2NGtk0FoxxD3wWDp
- guitar.mp4 = 1jK4K3hASDLyV1_IL8i7aHN0Bw_NmPY8Q
- daphne_sleeping_compressed.mp4 = 1RHOMVPS0I4untNWh52_9TgoOccgUx2DD
- daphne_garden.MOV = 1kEO4P9EawBvTCj8zNE1yun5uQllaSYJD # Careful, this may be too large to MM in colab
- bye.mp4 = 1Sofe9IFkTzVFMGuAlmOw4SnNDSFQQP5v
If you are struggling to get the codes to run, some outputs are also stored here.
- daphne_mm.mp4 = 1Cl0lD51Y0Tb5KeCHHYj2Qtac7gYyszbt
- aia.lev1_euv_12s.2023-06-10T232959Z.171.image.fits = 1fPvZoYQZLWfuK3ZXpECq22YFgI1ygXCD
- hmi.m_720s.20230611_000000_TAI.3.magnetogram.fits = 11hN4HPrP2h7pWRktGXZ9f5BY6ThWu87T
- orig_fits.zip = 1aWmxzJRmjQjU3GKn7m3CneAWYK-hYNga # This contains some previously cutout FITS files
- mm_fits.zip = 18-7V5KAqepQWVa7fqNvhpI4AIw_iYTvZ # This contains some previously processed + cutout FITS files
- 20230611_sunmaps.mp4 = 1K5XrbapQ1MUYt7nsUkY_sNboTne-zz-t
- 20230611_171_magk5w120.npy = 1ZLTq9wauJNNoO_VBE5AZuHSMCruOBzjp
- 20230611_k5w120_sunmaps.mp4 = 1SF6NKi7SlMUlqrzzvRxearsPbzfrqDeF