I'm not sure if I understood your problem... You can't find the Calibration Constant? In that case the calibration constant is a property of the Sxx group. Check csk-product handbook page 45 for more information.
Hope it helps! Regards 2011/7/11 RSyaoxin <rsyao...@hotmail.com>: > Thanks Alex Mantaut .This document is what I previously reference.Maybe the > problem is that I do not know how to extract "Calibration Constant"or"K" > parameters. > Kind Regards > > > ________________________________ > Date: Mon, 11 Jul 2011 07:36:52 -0700 > From: [hidden email] > To: [hidden email] > Subject: RE: How to get some special metadata of HDF5 Cosmo-Skymed file > > To be honest I know nothing about radiation calibration... Did you > checked out this document? > > http://www.e-geos.it/products/pdf/COSMO-SkyMed-Image_Calibration.pdf > > other relevant information can be found at: > > http://www.e-geos.it/products/cosmo.html > > Hope it helps! > Regards > > 2011/7/11 RSyaoxin <[hidden email]>: >> Thanks Antonio Valentino and Alex Mantaut. I've got these >> parameters.I have >> a new problem,I need to get the backscatter image,but the calibration >> result >> is not correct,the calibrated image pixels are all zero.I doubt that my >> method is not correct.Who can give me some information about Cosmo-Skymed >> radiation calibration?How should I do? >> Best regards. >> >> >> ________________________________ >> Date: Mon, 11 Jul 2011 06:55:54 -0700 >> From: [hidden email] >> To: [hidden email] >> Subject: Re: How to get some special metadata of HDF5 Cosmo-Skymed file >> >> Hi RSyaoxin, >> >> Antonio is right, there was an issue on geting the root metadata from >> hdf5 files and is has been fixed in trunk, you will need to recompile >> gdal in order to get that information. >> >> >> After you rebuilt the library, an example on getting the metadata: >> >> #include "gdal_priv.h" >> #include <iostream> >> #include <cstdlib> >> #include <string> >> #include <stdexcept> >> >> using namespace std; >> >> int main(int argc, char **argv) >> { >> GDALDataset *poDataset; >> >> GDALAllRegister(); >> >> //Open the subdataset >> //The filename should be formated like this >> //HDF5:filepath://subdataset >> poDataset = (GDALDataset *) GDALOpen( >> >> "HDF5:CSKS1_DGM_B_HR_00_HH_RA_SF_20080211191721_20080211191753.h5://S01/SBI", >> GA_ReadOnly ); >> >> if( poDataset == NULL ) >> { >> cout <<"error opening dataset"<<endl; >> } >> else >> { >> //To get the metadata the item name should be formated like >> this: >> //Every space and group separator should be replaced with >> an underscore (_) >> //I.e. You need item Beam ID from group S01: >> const char *pszBeamId = >> poDataset->GetMetadataItem("S01_Beam_ID"); >> cout << pszBeamId <<endl; >> //I.e. You need item Rescaling factor the root: >> const char *pszRescalingFactor = >> poDataset->GetMetadataItem("Rescaling_Factor"); >> cout << pszRescalingFactor <<endl; >> } >> } >> >> Best regards >> >> >> >> 2011/7/10 Antonio Valentino <[hidden email]>: >>> Hi RSyaoxin, >>> >>> Il 10/07/2011 16:08, RSyaoxin ha scritto: >>>> Hi,all. >>>> I want to calibrate the Cosmo-Skymed radar data, and I need some >>>> parameters, such as "Calibration Constant","Rescaling Factor","Reference >>>> Incidence Angle" and so on.However,I'm a beginner,I don't know how to >>>> get >>>> HDF5 metadata,Somebody can give me a tutorial in c or c++? >>>> Furthermore,I used HDFView to see the file's metadata and found >>>> that >>>> these information is stored in the metadata corresponding to the "root" >>>> of >>>> the file, I try to use gdalinfo to get the file's metadata and can't >>>> find >>>> it.That's why? >>>> >>>> Subdatasets: >>>> >>>> >>>> >>>> SUBDATASET_1_NAME=HDF5:"D:\CSKS3_GEC_B_WR_01_VV_RD_SF_20100720100133_20100720100148.h5"://MBI >>>> SUBDATASET_1_DESC=[9028x12156] //MBI (16-bit unsigned integer) >>>> >>>> >>>> >>>> SUBDATASET_2_NAME=HDF5:"D:\CSKS3_GEC_B_WR_01_VV_RD_SF_20100720100133_20100720100148.h5"://QLK >>>> SUBDATASET_2_DESC=[902x1215] //QLK (8-bit unsigned character) >>>> >>>> I hope to get some help.Thank you! >>>> Kind regards. >>> >>> The HDF5 driver has been recently updated to improve metadata management: >>> >>> http://trac.osgeo.org/gdal/changeset/22517 >>> http://trac.osgeo.org/gdal/ticket/2412 >>> >>> The problem you are experimenting should be fixed in trunk but you need >>> to re-build GDAL from sources to get it. >>> >>> regards >>> >>> -- >>> Antonio Valentino >>> _______________________________________________ >>> gdal-dev mailing list >>> [hidden email] >>> http://lists.osgeo.org/mailman/listinfo/gdal-dev >>> >> >> -- >> -- >> Alex Mantaut >> SUR Emprendimientos Tecnológicos >> >> Perú 345 Piso 5to Oficina "B" (C1067AAG) >> Ciudad de Buenos Aires, Argentina >> Tel. +54 (11) 4342-2976/84 >> [hidden email] >> www.suremptec.com >> _______________________________________________ >> gdal-dev mailing list >> [hidden email] >> http://lists.osgeo.org/mailman/listinfo/gdal-dev >> >> >> ________________________________ >> If you reply to this email, your message will be added to the discussion >> below: >> >> http://osgeo-org.1803224.n2.nabble.com/How-to-get-some-special-metadata-of-HDF5-Cosmo-Skymed-file-tp6567852p6571000.html >> To unsubscribe from How to get some special metadata of HDF5 Cosmo-Skymed >> file, click here. >> ________________________________ >> View this message in context: RE: How to get some special metadata of HDF5 >> Cosmo-Skymed file >> Sent from the GDAL - Dev mailing list archive at Nabble.com. >> >> _______________________________________________ >> gdal-dev mailing list >> [hidden email] >> http://lists.osgeo.org/mailman/listinfo/gdal-dev >> > > -- > -- > Alex Mantaut > SUR Emprendimientos Tecnológicos > > Perú 345 Piso 5to Oficina "B" (C1067AAG) > Ciudad de Buenos Aires, Argentina > Tel. +54 (11) 4342-2976/84 > [hidden email] > www.suremptec.com > _______________________________________________ > gdal-dev mailing list > [hidden email] > http://lists.osgeo.org/mailman/listinfo/gdal-dev > > > ________________________________ > If you reply to this email, your message will be added to the discussion > below: > http://osgeo-org.1803224.n2.nabble.com/How-to-get-some-special-metadata-of-HDF5-Cosmo-Skymed-file-tp6567852p6571128.html > To unsubscribe from How to get some special metadata of HDF5 Cosmo-Skymed > file, click here. > ________________________________ > View this message in context: RE: How to get some special metadata of HDF5 > Cosmo-Skymed file > Sent from the GDAL - Dev mailing list archive at Nabble.com. > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev > -- -- Alex Mantaut SUR Emprendimientos Tecnológicos Perú 345 Piso 5to Oficina "B" (C1067AAG) Ciudad de Buenos Aires, Argentina Tel. +54 (11) 4342-2976/84 alexmant...@suremptec.com.ar www.suremptec.com _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
