Hi Anatole,
at the moment, the only alternative to using OMERO pyramidal format is indeed to create a pyramidal format supported by Bio-Formats. See
https://www.openmicroscopy.org/site/sup ... rmats.html for the complete list of formats that can be sorted using the Pyramid column.
Out of this list, I would also think the Imaris HDF format might be a good starting candidate. Note we have received issues related to recent versions of these file which might require some dependency upgrade on our side - see
this card for more information.
In the mid-term, you might want be interested in this
public design proposal discussing a possible extension of our OME-TIFF format to natively support pyramid data.
Best,
Sebastien