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GlacioHack / xdem

Analysis of digital elevation models (DEMs)
https://xdem.readthedocs.io/
MIT License
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coregistration with ICESat-2 #282

Open mmazzolini opened 2 years ago

mmazzolini commented 2 years ago

Hi everyone,

I am a PhD student at UiO and in our project, we hope to measure snow depth with ICESat-2 data and snow-free DEMs. In this context, coregistration is a crucial step. I know in the repository iamdonovan/pybob there is a similar functionality, but wanted to know if someone here is working on it. If not, I wonder if someone with some experience on the structure of xdem would like to collaborate on implementing this feature.

Cheers, Marco.

rhugonnet commented 2 years ago

Hi Marco,

Great idea, and your timing is perfect! :smile: We intended to start further work on the coreg.py module end-of-summer.

I implemented support for point data last winter in a coreg_point_support branch that is on my fork (https://github.com/rhugonnet/xdem/tree/coreg_point_support). I also have a local script that retrieves ICESat-2 data using icepyx, post-processes it with h5py, and then runs the xDEM co-registration from the coreg_point_support branch.

It would be amazing to integrate this fully into xDEM, but there is still quite a bit of work on structuring, testing, plotting, and documenting! We should also coordinate with the developers of icepyx to avoid duplication (right now it downloads the data, but no post-processing. For this I adapted code from a script in https://github.com/ICESAT-2HackWeek/topohack/blob/master/topolib/gda_lib.py). There is also ICESat-2 SlideRule that is interesting to consider.

ICESat-2 aside, we had in mind to improve the structure, add plotting functionalities and write more tests for all Coreg classes soon. If you're up for it, I can invite you to our GlacioHack Slack channel (email me)

mmazzolini commented 2 years ago

Hi Romain,

what you're doing sounds exciting, especially creating a workflow for downloading snow-off ICESat-2 tracks and co-registers DEMs might be beneficial for many people given the consistency and accuracy of ICESat-2 data!

I am up for collaboration in general. Add me to the channel (my mail is mazzolini.marc@gmail.com). I participate in a summer school for some weeks, but I can join the effort from the second half of September!

erikmannerfelt commented 1 year ago

@mmazzolini, could we close this issue, as #346 is merged and we thus have (poorly refined but existing) functionality for Raster-point co-registration?