Hi Frank, Il 18/06/2011 14:38, Frank Warmerdam ha scritto: > On 11-06-18 02:59 AM, Antonio Valentino wrote: >> I don't know if someone is currently working on the JAXAPalsar driver. >> Anyway I' very interested in extending driver for SAR products to get >> more metadata so I would be happy to help if you need. > > Folks, > > Phil Vachon did most of the JAXA Palsar work but has moved on to > non-geospatial pursuits, so anyone interested should feel free to > dig in. > >> Palsar products are in CEOS format so IMHO it would be nice to setup a >> general mechanism to decode CEOS records (a similar job has been done >> for ENVISAT records recently) >> >> http://trac.osgeo.org/gdal/ticket/4105 >> http://trac.osgeo.org/gdal/attachment/ticket/4105/asar_metadata.patch >> >> The hard part (it is a very boring job) IMHO is to fill data structures >> that properly describe CEOS records for each sensor end product type. >> >> Anyway populating record descriptors is a job that can be done gradually >> and, hopefully, with the help of other users so we could start with the >> few metadata you are currently interested in and add other record >> descriptors later. >> >> The key is to setup a genereal (enough) framework for CEOS record >> decoding. > > There is already a generic SAR CEOS driver (gdal/frmts/ceos2) with a CEOS > record parsing mechanism. If that is what you want, please start from it. > For reasons not immediately obvious to me Phil chose to build a specific > JAXA Palsar driver but please think twice before building it out into a > full > generic CEOS driver duplicating what already exists.
Thank you Frank. My basic idea was to propose an improvement of the ceos2 driver but I completely missed GetCeosField function. Sorry. Looking better to the code it seems that all tools for record decoding are already there, as you pointed out, so it is just a matter of getting more metadata. Regarding the JAXAPalsar driver, it is currently registered *after* the ceos2 driver so, if my understanding is correct, CEOS products should be opened with ceos2 and the JAXAPalsar should be used as a fallback. Is it correct? Any way I'm currently downloading some sample PALSAR product to see what happens. Best regards -- Antonio Valentino _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
