ABraun
October 28, 2020, 6:37pm
#1
In order to keep you informed on new tutorials, I’ll post updates in here.
The following tutorials were already added since 2020:
Feel free to test them and comment in here! Any feedback is appreciated.
12 Likes
ABraun
October 28, 2020, 6:38pm
#2
The latest addition is Landcover classification with Sentinel-1 GRD
It contains
pre-processing of Sentinel-1 GRD data
the generation of image textures
principal component analysis
unsupervised clustering
rule-based classification using the Mask Manager
supervised classifications based in training data
assessment of the training and prediction accuracy
7 Likes
@ABraun Thank you fore the great job done!
Nice material for students and practitioners.
May I give you a suggestion for one of the next tutorials - make a summary of StaMPS thread, if possible.
ABraun
November 3, 2020, 11:06am
#4
thank you @hriston_bg
We considered a separate tutorial on StaMPS but have not decided for one because of two reasons:
there are two very detailled instructions available here and here and I could not make it any better
Large parts are done in StaMPS which was not developed by ESA, so we leave the documentation and support to those in charge.
Still, we collect all developments here: StaMPS - Detailled instructions to provide an easy start for anyone interested.
Sorry, but the tutorial of " Synergetic use of S1 (SAR) and S2 (optical) data and use of analysis tools" can not be opened, the URL gives an error. Thanks!
ABraun
November 17, 2020, 9:14am
#8
thank you for reporting - I updated the url.
1 Like
mraj
November 28, 2020, 12:44pm
#9
Hello, @ABraun ! I am working with s1 time-series data. I read “Time-series analysis with Sentinel-1” and I noticed that you do not filter the images when you are pre-processing, instead you apply a multitemporal filter to the whole time-series images. Why didn’t you filter them before? I am a bit confused about how to do it.
ABraun
November 28, 2020, 12:48pm
#10
both is legit, I would say. The multi-temporal filter greates more smooth gradients between the dates and is considered more precise regarding speckle, while the single product flter will preserve the information of each product a little better.
1 Like
ABraun
December 21, 2020, 1:50pm
#12
A short, but often requested tutorial on the Export of products from SNAP was now published. It includes
how the BEAM DIMAP format can be converted to GeoTiff and other compatible raster formats
what problems can occur during the conversion of formats
the export of raster data to a tabular format (CSV)
how to open raster data in QGIS and ArcGIS and why these can look different here
most importantly: why conversion is often not necessary and how BEAM DIMAP products can directly be read in QGIS or ArcGIS .
3 Likes
ABraun
February 16, 2021, 4:39pm
#13
We just published a short tutorial on the Import of data into SNAP
It gives some general remarks on how to load data into SNAP and what to look out for. More concretely
Import of vector data for their use in analysis tools (Statistics, Scatter Plots…)
Import of vector polygons as input training data for supervised classifications
import of tabular data (CSV)
import spectral signatures for Spectral Unmixing
import of digital elevation models
import of landcover classifications
import of WebMapServices (WMS)
1 Like
giangnv
August 11, 2021, 4:04am
#14
Thank colleagues for your efforts.
These tutorials can be improved by including a workflow diagram at the beginning of each tutorial, then users can have an overview and required steps of each process.
Cheers,
1 Like