S1A-S1B coherence of partially overlapping images

My study area lies in the overlap between those two frames where one includes nearly half of the regularly temporally separated acquisitions from 14 July to 11 November 2016 while the other frame includes acquisitions from 29 November 2016 to 28 May 2017.

The InSAR Stack Overview showed those measures for perpendicular baseline (max was -144m) and automatically chose a reference image (even though I haven’t done coregisteration nor have I applied orbit file yet). Does this make any sense? If I can use this data set, how would I split the overlapping bursts from both frames during the automated pre-processing regarding that the bursts number will differ in both frames.

Shouldn’t they be selected based on the AOI coordinates in the snap2stamps config file automatically?

Yes. But I was afraid that the AOI bounding box might exceed this area of overlap because the latter is relatively small, and hence different non-overlapping bursts may be automatically split from both frames that won’t be coregisterable

The consequence would be to make the AOI smaller so that only these bursts are selected which are actually required.
But SNAP also coregisters data with different numbers of bursts, some remain empty if they are not covered by both inputs. Waste of processing time and data, but should still be possible.

1 Like

The AOI is only set by a bounding box which does not conform to the orientation of Sentinel-1’s burst, and the path of Sentinel-1 isn’t exactly traveling from south to north or vice versa. It’s oblique to the Earth’s perpendicular axis. therefore I cannot set a BBOX coordinates without sacrificing a big part of the burst that I already need. I do not know if I could explain my concern properly.

Can I rotate the BBOX like this in order to subset the most of the burst that includes my study area?

I understand - but this is something everyone of us has to deal with when working with Sentinel-1 data in StaMPS :slight_smile:
You simply make the coordinates of the AOI smaller so they are fully inside the desired burst.

How do I make snap calculate the perpendicular baseline for data set between the master and slaves based on my own choice of the master scene instead of the automatic selection from the InSAR Stack Overview tool ?

Because this particular data set with overlapping scenes where my study area is located, keeps giving me this error during coregisteration and interferogram formation step, so I was thinking of changing the master scene so hopefully coregisteration would be done successfully.

(base) shadi@shadi-Inspiron-7577:/media/shadi/MyPassport/RadarData/Galala/Descending/For_time_series/2017_2018/descending_2016_2017/bin$ python2 coreg_ifg_topsar.py project.conf
/media/shadi/MyPassport/RadarData/Galala/Descending/For_time_series/2017_2018/descending_2016_2017
/media/shadi/MyPassport/RadarData/Galala/Descending/For_time_series/2017_2018/descending_2016_2017/graphs
IW1
/media/shadi/MyPassport/RadarData/Galala/Descending/For_time_series/2017_2018/descending_2016_2017/master/S1B_IW_SLC__1SDV_20170104T035144_20170104T035211_003693_00657E_326B_Orb.dim
/home/shadi/esa_snap/bin/gpt
/media/shadi/MyPassport/RadarData/Galala/Descending/For_time_series/2017_2018/descending_2016_2017/graphs/coreg_ifg_computation_subset.xml

#####################################################################

Coregistration and Interferogram computation started:

#####################################################################

/media/shadi/MyPassport/RadarData/Galala/Descending/For_time_series/2017_2018/descending_2016_2017/split/20160714/20160714_IW1.dim
[1] Processing slave file :20160714_IW1.dim

SNAP STDOUT:INFO: org.esa.snap.core.gpf.operators.tooladapter.ToolAdapterIO: Initializing external tool adapters
INFO: org.esa.snap.core.util.EngineVersionCheckActivator: Please check regularly for new updates for the best SNAP experience.
Executing processing graph
INFO: org.hsqldb.persist.Logger: dataFileCache open start
…10%…20%INFO: org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp: Shifts written to file: /home/shadi/.snap/var/log/IW1_range_shifts.json
WARNING: org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp: NetworkESD (azimuth shift): arc = IW1_VV_mst_04Jan2017_IW1_VV_slv1_14Jul2016, weight for this band is 0.0, setting azimuth offset to 0.0
0
0
WARNING: org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp: NetworkESD (azimuth shift): arc = IW1_VV_mst_04Jan2017_IW1_VV_slv1_14Jul2016, weight for this band is 0.0, setting azimuth offset to 0.0
Waiting thread received a null tile.
java.lang.NullPointerException
Waiting thread received a null tile.
0
0
java.lang.NullPointerException
Waiting thread received a null tile.
java.lang.NullPointerException
Waiting thread received a null tile.
WARNING: org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp: NetworkESD (azimuth shift): arc = IW1_VV_mst_04Jan2017_IW1_VV_slv1_14Jul2016, weight for this band is 0.0, setting azimuth offset to 0.0
java.lang.NullPointerException
0
0
90%Waiting thread received a null tile.
WARNING: org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp: NetworkESD (azimuth shift): arc = IW1_VV_mst_04Jan2017_IW1_VV_slv1_14Jul2016, weight for this band is 0.0, setting azimuth offset to 0.0
Waiting thread received a null tile.
java.lang.NullPointerException
0
done.
0
org.esa.snap.core.gpf.OperatorException: 0
at org.esa.snap.core.gpf.graph.GraphProcessor$GPFImagingListener.errorOccurred(GraphProcessor.java:389)
at com.sun.media.jai.util.SunTileScheduler.sendExceptionToListener(SunTileScheduler.java:1646)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:921)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleFloat(PlanarImage.java:3254)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2181)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.Operator.getSourceTile(Operator.java:459)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileInOneSwathFloat(TOPSARDeburstOp.java:904)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileStack(TOPSARDeburstOp.java:811)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleShort(PlanarImage.java:2951)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2172)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.datamodel.Band.readRasterData(Band.java:309)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataRegion(ProductSubsetBuilder.java:393)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataImpl(ProductSubsetBuilder.java:330)
at org.esa.snap.core.dataio.AbstractProductReader.readBandRasterData(AbstractProductReader.java:277)
at org.esa.snap.core.gpf.common.SubsetOp.computeTile(SubsetOp.java:295)
at org.esa.snap.core.gpf.internal.OperatorImage.computeRect(OperatorImage.java:82)
at javax.media.jai.SourcelessOpImage.computeTile(SourcelessOpImage.java:137)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:116)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at com.sun.media.jai.util.RequestJob.compute(SunTileScheduler.java:247)
at com.sun.media.jai.util.WorkerThread.run(SunTileScheduler.java:468)
Caused by: org.esa.snap.core.gpf.OperatorException: 0
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.computeTileStack(SpectralDiversityOp.java:827)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
… 35 more
Caused by: org.esa.snap.core.gpf.OperatorException: 0
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.estimateAzimuthOffset(SpectralDiversityOp.java:1243)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.computeTileStack(SpectralDiversityOp.java:809)
… 38 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.outputESDEstimationToFile(SpectralDiversityOp.java:2390)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.estimateAzimuthOffset(SpectralDiversityOp.java:1180)
… 39 more

Error: 0
SEVERE: org.esa.snap.core.util.SystemUtils$SnapImagingListener: JAI error occurred: ‘Problem occurs when computing a tile by the owner.’ at com.sun.media.jai.util.SunTileScheduler@153b4baf
java.lang.NullPointerException
at com.sun.media.jai.util.SunCachedTile.(SunCachedTile.java:80)
at com.sun.media.jai.util.SunTileCache.add(SunTileCache.java:257)
at javax.media.jai.OpImage.addTileToCache(OpImage.java:1087)
at javax.media.jai.OpImage.getTile(OpImage.java:1142)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:116)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at com.sun.media.jai.util.RequestJob.compute(SunTileScheduler.java:247)
at com.sun.media.jai.util.WorkerThread.run(SunTileScheduler.java:468)

– org.jblas INFO Deleting /tmp/jblas1417420068491608526/libgfortran-4.so
SEVERE: org.esa.snap.core.util.SystemUtils$SnapImagingListener: JAI error occurred: ‘Problem occurs when computing a tile by the owner.’ at com.sun.media.jai.util.SunTileScheduler@153b4baf
org.esa.snap.core.gpf.OperatorException: 0
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.computeTileStack(SpectralDiversityOp.java:827)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleFloat(PlanarImage.java:3254)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2181)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.Operator.getSourceTile(Operator.java:459)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileInOneSwathFloat(TOPSARDeburstOp.java:904)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileStack(TOPSARDeburstOp.java:811)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleShort(PlanarImage.java:2951)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2172)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.datamodel.Band.readRasterData(Band.java:309)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataRegion(ProductSubsetBuilder.java:393)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataImpl(ProductSubsetBuilder.java:330)
at org.esa.snap.core.dataio.AbstractProductReader.readBandRasterData(AbstractProductReader.java:277)
at org.esa.snap.core.gpf.common.SubsetOp.computeTile(SubsetOp.java:295)
at org.esa.snap.core.gpf.internal.OperatorImage.computeRect(OperatorImage.java:82)
at javax.media.jai.SourcelessOpImage.computeTile(SourcelessOpImage.java:137)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:116)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at com.sun.media.jai.util.RequestJob.compute(SunTileScheduler.java:247)
at com.sun.media.jai.util.WorkerThread.run(SunTileScheduler.java:468)
Caused by: org.esa.snap.core.gpf.OperatorException: 0
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.estimateAzimuthOffset(SpectralDiversityOp.java:1243)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.computeTileStack(SpectralDiversityOp.java:809)
… 38 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.outputESDEstimationToFile(SpectralDiversityOp.java:2390)
at org.esa.s1tbx.sentinel1.gpf.SpectralDiversityOp.estimateAzimuthOffset(SpectralDiversityOp.java:1180)
… 39 more

– org.jblas INFO Deleting /tmp/jblas1417420068491608526/libquadmath-0.so0

– org.jblas INFO Deleting /tmp/jblas1417420068491608526/libjblas_arch_flavor.so
– org.jblas INFO Deleting /tmp/jblas1417420068491608526/libjblas.so
– org.jblas INFO Deleting /tmp/jblas1417420068491608526
Waiting thread received a null tile.
Waiting thread received a null tile.
Waiting thread received a null tile.
SEVERE: org.esa.snap.core.util.SystemUtils$SnapImagingListener: JAI error occurred: ‘Problem occurs when computing a tile by the owner.’ at com.sun.media.jai.util.SunTileScheduler@153b4baf
org.esa.snap.core.gpf.OperatorException: java.lang.NullPointerException
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileStack(TOPSARDeburstOp.java:826)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleShort(PlanarImage.java:2951)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2172)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.datamodel.Band.readRasterData(Band.java:309)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataRegion(ProductSubsetBuilder.java:393)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataImpl(ProductSubsetBuilder.java:330)
at org.esa.snap.core.dataio.AbstractProductReader.readBandRasterData(AbstractProductReader.java:277)
at org.esa.snap.core.gpf.common.SubsetOp.computeTile(SubsetOp.java:295)
at org.esa.snap.core.gpf.internal.OperatorImage.computeRect(OperatorImage.java:82)
at javax.media.jai.SourcelessOpImage.computeTile(SourcelessOpImage.java:137)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:116)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at com.sun.media.jai.util.RequestJob.compute(SunTileScheduler.java:247)
at com.sun.media.jai.util.WorkerThread.run(SunTileScheduler.java:468)
Caused by: java.lang.NullPointerException
at com.sun.media.jai.util.SunCachedTile.(SunCachedTile.java:80)
at com.sun.media.jai.util.SunTileCache.add(SunTileCache.java:257)
at javax.media.jai.OpImage.addTileToCache(OpImage.java:1087)
at javax.media.jai.OpImage.getTile(OpImage.java:1142)
at javax.media.jai.PlanarImage.cobbleFloat(PlanarImage.java:3254)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2181)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.Operator.getSourceTile(Operator.java:459)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileInOneSwathFloat(TOPSARDeburstOp.java:904)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileStack(TOPSARDeburstOp.java:811)
… 26 more

SEVERE: org.esa.snap.core.util.SystemUtils$SnapImagingListener: JAI error occurred: ‘Problem occurs when computing a tile by the owner.’ at com.sun.media.jai.util.SunTileScheduler@153b4baf
org.esa.snap.core.gpf.OperatorException: Waiting thread received a null tile.
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.insar.gpf.InterferogramOp.computeTileStackForTOPSARProduct(InterferogramOp.java:1292)
at org.esa.s1tbx.insar.gpf.InterferogramOp.computeTileStack(InterferogramOp.java:863)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleFloat(PlanarImage.java:3254)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2181)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.Operator.getSourceTile(Operator.java:459)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileInOneSwathFloat(TOPSARDeburstOp.java:904)
at org.esa.s1tbx.sentinel1.gpf.TOPSARDeburstOp.computeTileStack(TOPSARDeburstOp.java:811)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.Operator.getSourceTile(Operator.java:459)
at org.jlinda.nest.gpf.SubtRefDemOp.computeTileStack(SubtRefDemOp.java:499)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:122)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.cobbleFloat(PlanarImage.java:3254)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2181)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.datamodel.Band.readRasterData(Band.java:309)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataRegion(ProductSubsetBuilder.java:393)
at org.esa.snap.core.dataio.ProductSubsetBuilder.readBandRasterDataImpl(ProductSubsetBuilder.java:330)
at org.esa.snap.core.dataio.AbstractProductReader.readBandRasterData(AbstractProductReader.java:277)
at org.esa.snap.core.gpf.common.SubsetOp.computeTile(SubsetOp.java:295)
at org.esa.snap.core.gpf.internal.OperatorImage.computeRect(OperatorImage.java:82)
at javax.media.jai.SourcelessOpImage.computeTile(SourcelessOpImage.java:137)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:449)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:435)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeRect(OperatorImageTileStack.java:116)
at org.esa.snap.core.gpf.internal.OperatorImageTileStack.computeTile(OperatorImageTileStack.java:86)
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:904)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at com.sun.media.jai.util.RequestJob.compute(SunTileScheduler.java:247)
at com.sun.media.jai.util.WorkerThread.run(SunTileScheduler.java:468)
Caused by: org.esa.snap.core.gpf.OperatorException: Waiting thread received a null tile.
at org.esa.snap.engine_utilities.gpf.OperatorUtils.catchOperatorException(OperatorUtils.java:434)
at org.esa.s1tbx.insar.gpf.InterferogramOp.computePartialTile(InterferogramOp.java:1460)
at org.esa.s1tbx.insar.gpf.InterferogramOp.computeTileStackForTOPSARProduct(InterferogramOp.java:1288)
… 49 more
Caused by: java.lang.RuntimeException: Waiting thread received a null tile.
at com.sun.media.jai.util.SunTileScheduler.scheduleTile(SunTileScheduler.java:963)
at javax.media.jai.OpImage.getTile(OpImage.java:1129)
at javax.media.jai.PlanarImage.getData(PlanarImage.java:2085)
at com.bc.ceres.glevel.MultiLevelImage.getData(MultiLevelImage.java:64)
at javax.media.jai.PlanarImage.getExtendedData(PlanarImage.java:2440)
at org.esa.snap.core.gpf.internal.OperatorContext.getSourceTile(OperatorContext.java:447)
at org.esa.snap.core.gpf.Operator.getSourceTile(Operator.java:479)
at org.esa.s1tbx.insar.gpf.InterferogramOp.computePartialTile(InterferogramOp.java:1363)
… 50 more

Waiting thread received a null tile.