I created a Web Processing Service with GeoServer, that creates a Stream
with an image (.png). For this, I send a POST query with the bboxx and
the ids of the layer I want to process (from a database), and the WPS
send the image as stream (same kind of answer than a WMS return).
Would it be possible to use such kind of POST query and return to be and
Image source, with OpenLayers 3 ?
I can give you details about this type of query, if you need. Thanks a lot !