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Opened 9 months ago

Last modified 5 weeks ago

#14921 new enhancement

Support Sentinel 2 data directly

Reported by: stoecker Owned by: team
Priority: major Milestone:
Component: Core imagery Version:
Keywords: sentinel Cc: wiktorn, Klumbumbus, simon04, naoliv

Description (last modified by stoecker)

We already have some reused sentinel data in our Maps overview, but that is not really a good solution. Sentinel provides a large amount of imagery and a dedicated interface would be good.

Especially there needs to be a time span selection to easily choose proper data (i.e. no clouds, ...).

Conditions: https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice
Data directly: http://sentinel-pds.s3-website.eu-central-1.amazonaws.com/
SciHub: https://scihub.copernicus.eu/
A WMS/TMS/WMTS service: http://www.sentinel-hub.com/apps/wms

It looks like asking www.sentinel-hub.com for JOSM/OSM conditions would be the fastest solution, but probably direct access to Sentinel data is worth the effort?

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Change History (25)

comment:1 Changed 9 months ago by stoecker

Description: modified (diff)

comment:2 Changed 9 months ago by stoecker

Cc: Klumbumbus added

comment:3 in reply to:  description Changed 8 months ago by bastiK

Sentinel-2 with 10m resolution is a better than Landsat (30m), but not that much better: You can barely see individual buildings. The value is really in the frequent updates (complete earth coverage about every 10 days).

One use case I can see already is to observe bodies of water over the seasons, so you can distinguish proper lakes from temporarily flooded areas ("Überflutungswiesen").

Replying to stoecker:

It looks like asking www.sentinel-hub.com for JOSM/OSM conditions would be the fastest solution,

Yes, it looks like they provide all that we could ask for.

but probably direct access to Sentinel data is worth the effort?

The data on the AWS will be hard to use directly: It is in proprietary jpeg 2000 format and the tiles are rather big (~300 MB each).

comment:4 Changed 8 months ago by wiktorn

The other use case is to check how the road network looks after major (re-)construction.

I'm not sure about the conditions as from different parts I see different conditions, as for example here where I come from AWS S3 page

(note - only non-commercial use).

Sentinel Hub does cutting and reformatting to jpeg/png/tiff, so probably - we would need to implement some kind of their WMS-Configurator to allow our users to choose images easily.

Accessing S3 directly would require to setup something similar to Sentinel Hub on our infrastructure.

comment:5 in reply to:  4 Changed 8 months ago by stoecker

Sentinel Hub does cutting and reformatting to jpeg/png/tiff, so probably - we would need to implement some kind of their WMS-Configurator to allow our users to choose images easily.

As far as my tests showed they provide normal WMS/TMS/WMTS service. With an additional TIME parameter for image selection.

comment:6 in reply to:  4 Changed 8 months ago by bastiK

Replying to wiktorn:

I'm not sure about the conditions as from different parts I see different conditions, as for example here where I come from AWS S3 page

(note - only non-commercial use).

I don't see any ambiguity here, quote:

Any Sentinel data available through the Sentinel Data Hub will be governed by the Legal Notice on the use of Copernicus Sentinel Data and Service Information.

Any other contents of ESA's Sentinel Data Hub websites are intended for non-commercial use.

We don't want to use any contents other than the Sentinel data, so it is fine.

Sentinel Hub does cutting and reformatting to jpeg/png/tiff, so probably - we would need to implement some kind of their WMS-Configurator to allow our users to choose images easily.

Accessing S3 directly would require to setup something similar to Sentinel Hub on our infrastructure.

Maybe possible for a single time slice, but all the data? This would require a major investment in hardware and a person working full time on it ...

comment:7 Changed 7 months ago by Don-vip

Milestone: 17.0717.08

comment:8 Changed 6 months ago by Don-vip

Milestone: 17.0817.09

comment:9 Changed 6 months ago by Don-vip

Another way to access data from Sentinel products, from the CNES (French Space Agency): https://peps.cnes.fr
There are web services / OpenSearch API described (in French) here: https://peps.cnes.fr/rocket/plus/plus.htm

Last edited 6 months ago by Don-vip (previous) (diff)

comment:10 Changed 6 months ago by bastiK

It doesn't look like they have options to download smaller tiles, just the areas of several square km like ESA. They have a "suggestions" box, maybe we can ask them to add WMS/TMS/WMTS service? :)

comment:11 Changed 6 months ago by Don-vip

I can ask :)

comment:12 Changed 6 months ago by Don-vip

Done. I note also in the project description the following evolution: "By 2018, a European platform involving the Big Data and Cloud industries will make Copernicus data available to all citizens, scientists and industry worldwide." Maybe this one will offer easier access if PEPS does not.

comment:13 Changed 6 months ago by Don-vip

Good news! I have a positive answer from CNES:

the functionality to offer TMS/WMS/WMTS services is planned, under development and will be available soon.

\o/

Last edited 6 months ago by Don-vip (previous) (diff)

comment:14 Changed 5 months ago by Don-vip

Hello,
On Tuesday morning I will likely meet the IGN (French Geographic Agency) in the scope of this project:
https://landsense.eu/Themes/Urban-Landscape-Dynamics
I don't know anything about it yet, but they're talking about "OpenStreetMap tools", and:

In the mid-Pyrenees, including the city of Toulouse in France, IGN France will engage citizens and public authorities in updating a number of their mapping products. Using the LandSense change detection service, citizens will become detectives and investigate urban change in real-time supported by the European Sentinel-2 satellite image data infrastructure.

I'll let you know of the implications, this is exciting :)

comment:15 Changed 5 months ago by bastiK

Great, sounds very promising!

comment:16 Changed 5 months ago by Don-vip

Cc: simon04 added

The project is, among other things, dealing with improving landuse/landcover thanks to automatic change detection based on Sentinel-2 imagery. But the changes are provided as a service, not the imagery itself. I asked about our interest for a direct imagery access, they told me they will see with LandSense (it's not the IGN who run this service but GeoVille). Stay tuned!

@Simon: there's something fun in Austria. We will also use this application in Toulouse, but without the money :D Are you by chance in contact with GeoVille, IIASA, UBA, G2K? This project is definitively led by Austria!

comment:17 Changed 5 months ago by Don-vip

Milestone: 17.0917.10

comment:18 Changed 4 months ago by bastiK

If you like to check out how the Sentinel 2 data looks in JOSM: The people from https://s2maps.eu/ have compiled a cloud-free snapshot and provide WMTS access. The attribution requirement is not compatible with OSM, though.

They may allow OSM use if we ask nicely, but I still see the value of Sentinel 2 in the frequent updates, not a single snapshot.

comment:19 in reply to:  18 Changed 4 months ago by Don-vip

Replying to bastiK:

I still see the value of Sentinel 2 in the frequent updates, not a single snapshot.

I agree. I'd love to implement a GUI in JOSM allowing to update imagery background based on date & cloud settings.

comment:20 Changed 4 months ago by Don-vip

Milestone: 17.1017.11

comment:21 Changed 3 months ago by Don-vip

Milestone: 17.1117.12

comment:22 Changed 3 months ago by Don-vip

Keywords: sentinel added
Milestone: 17.1218.01

comment:23 Changed 6 weeks ago by Don-vip

See #15749 where support for jpeg 2000 is asked, but I closed it as wontfix as I don't see how we could support this format in JOSM.

comment:24 Changed 6 weeks ago by Don-vip

Cc: naoliv added

comment:25 Changed 5 weeks ago by Don-vip

Milestone: 18.01

To reschedule when we have concrete news

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