GeoTiff renderer for Cesium

[gberaudo]

OL as Geotiff support. The pixels are colored based on some rules that you provide.
Cesium as no support for that.

It would be great to use the OL renderer to provide this functionnality to Cesium.
People could benefit of this in 2 ways:

• as part of the OL-Cesium synchronizers system (automatic OL -> Cesium transformation);
• as standalone tool (with an ES6 import on this particular feature)

I discussed the idea at the FOSS4G in Prizren today with someone from the pdal community (sorry I am bad at remembering names, if you recognize yourself please comment here) and with @Kanahiro, the CTO of Mierune, a Japanese company.

If someone have ideas, is interested to start an analysis or do a POC, please comment here and feel free to start looking into it.
It would be a nice feature IMO.

[malaretv]

I'm very interested in this capability too. Not just GeoTIff support but the concept of DataTile layers and the ability to control their rendering would be great to have in Cesium. If the openlayers renderer could be leveraged to provide such capabilities to cesium that would be awesome.

My main block is I do not know much about the WebGL specific implementation details in either cesium or openlayers. Definitely eager to help and discuss potential paths forward.

I did find this the other day https://github.com/hongfaqiu/TIFFImageryProvider which may give some ideas as how best to proceed.

[gberaudo]

Hi @malaretv, thanks for your interest and sharing your findings.

My idea is to rely on OL to render individual tiles to a texture / image.
Then give the returned image to Cesium which will handle it as any other imagery provider.

I have not yet looked into it. I expect it will not require WebGL competencies / or maybe not too much ;)

[jmgomezpoveda]

This would be a really interesting feature. I was trying to use GeoTiffs in OL expecting to see them in Cesium as well, but nothing was showing.