Sentinel-1 "Failed to open image window"

[sabrina]

Hi,

I am having some problems after coregistering a Sentinel-1 images.

Any help would be appreciated, I’m not sure what the problem is. I don’t think it’s with coregistration itself as I was able to create an interferogram (but still not open it like this other image).

I get this error message below:

java.lang.NullPointerException

at com.sun.media.jai.util.SunCachedTile.<init>(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 org.esa.snap.core.datamodel.StxFactory.accumulateTile(StxFactory.java:343)

at org.esa.snap.core.datamodel.StxFactory.accumulate(StxFactory.java:323)

at org.esa.snap.core.datamodel.StxFactory.accumulate(StxFactory.java:296)

at org.esa.snap.core.datamodel.StxFactory.create(StxFactory.java:200)

at org.esa.snap.core.datamodel.StxFactory.create(StxFactory.java:274)

at org.esa.snap.core.datamodel.RasterDataNode.computeStxImpl(RasterDataNode.java:2453)

at org.esa.snap.core.datamodel.Band.computeStxImpl(Band.java:504)

at org.esa.snap.core.datamodel.RasterDataNode.getStx(RasterDataNode.java:2420)

at org.esa.snap.core.datamodel.RasterDataNode.createDefaultImageInfo(RasterDataNode.java:1827)

at org.esa.snap.core.datamodel.Band.createDefaultImageInfo(Band.java:483)

at org.esa.snap.core.datamodel.RasterDataNode.getImageInfo(RasterDataNode.java:1809)

at org.esa.snap.core.datamodel.RasterDataNode.getImageInfo(RasterDataNode.java:1792)

at org.esa.snap.core.image.ImageManager.prepareImageInfos(ImageManager.java:834)

at org.esa.snap.core.image.ColoredBandImageMultiLevelSource.create(ColoredBandImageMultiLevelSource.java:51)

at org.esa.snap.core.image.ColoredBandImageMultiLevelSource.create(ColoredBandImageMultiLevelSource.java:47)

at org.esa.snap.core.image.ColoredBandImageMultiLevelSource.create(ColoredBandImageMultiLevelSource.java:41)

at org.esa.snap.ui.product.ProductSceneImage.<init>(ProductSceneImage.java:69)

at org.esa.snap.rcp.actions.window.OpenImageViewAction.createProductSceneImage(OpenImageViewAction.java:271)

at org.esa.snap.rcp.actions.window.OpenImageViewAction.access$100(OpenImageViewAction.java:69)

at org.esa.snap.rcp.actions.window.OpenImageViewAction$1.doInBackground(OpenImageViewAction.java:236)

at org.esa.snap.rcp.actions.window.OpenImageViewAction$1.doInBackground(OpenImageViewAction.java:213)

at com.bc.ceres.swing.progress.ProgressMonitorSwingWorker.doInBackground(ProgressMonitorSwingWorker.java:55)

at javax.swing.SwingWorker$1.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at javax.swing.SwingWorker.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

Caused: java.util.concurrent.ExecutionException

at java.util.concurrent.FutureTask.report(Unknown Source)

at java.util.concurrent.FutureTask.get(Unknown Source)

at javax.swing.SwingWorker.get(Unknown Source)

[catch] at org.esa.snap.rcp.actions.window.OpenImageViewAction$1.done(OpenImageViewAction.java:221)

at javax.swing.SwingWorker$5.run(Unknown Source)

at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.run(Unknown Source)

at sun.swing.AccumulativeRunnable.run(Unknown Source)

at javax.swing.SwingWorker$DoSubmitAccumulativeRunnable.actionPerformed(Unknown Source)

at javax.swing.Timer.fireActionPerformed(Unknown Source)

at javax.swing.Timer$DoPostEvent.run(Unknown Source)

at java.awt.event.InvocationEvent.dispatch(Unknown Source)

at java.awt.EventQueue.dispatchEventImpl(Unknown Source)

at java.awt.EventQueue.access$500(Unknown Source)

at java.awt.EventQueue$3.run(Unknown Source)

at java.awt.EventQueue$3.run(Unknown Source)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.awt.EventQueue.dispatchEvent(Unknown Source)

at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)

at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)

at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)

at java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.awt.EventDispatchThread.run(Unknown Source)

[ABraun]

What product level of Sentinel-1 did you use (SLC or GRD) and which coregistration tool was applied? Any other steps which were applied before this error?

[sabrina]

I used SLC images and did the S1 TOPS coregistration.

[lveci]

Could you provide the file names of the two S1 products and any steps you did to get to that error?Thanks.

[sabrina]

S1A_IW_SLC__1SDV_20170916T223624_20170916T223651_018407_01EFD9_6EF5

and

S1A_IW_SLC__1SDV_20170928T223624_20170928T223651_018582_01F52F_D73E

I opened these images in SNAP and then used the S1 TOPS coregistration tool; I picked a subset of one of the IW images to perform the coregistration. The options I used were defaults.

[ABraun]

how did you create the subset? Was it before coregistration?
Usually, you reduce the area of interest in the “TOPS split” tab within TOPS coregistration .

[sabrina]

Within the coregistration tool there’s a scrolling bar where you can choose which subset images you want to use. I tried to use split beforehand but that did not work for another reason so I decided to split within the coregistration tool.

[ABraun]

that actually is the correct way to do it.
I just tried it in the G-TEP and at least the products seem fine. Have you tried it again?
I didn’t have the time to download them and directly test in SNAP which would clearly be more representative.

You can have a look at it here.

[sabrina]

I went ahead with the steps for creating an interferogram despite getting the errors (the errors didn’t prevent the products from being made, but just being seen). When I went through the steps I was able to create interferograms that I could open! Very strange, I don’t know what the problem is with the co registered image. So now I’m moving on to unwrapping, despite the original errors.

I’ve never heard of G-TEP, what is that?

[ABraun]

Does the message still pop up when opening the interferogram?
I had this once with TanDEM-X data but nothing was wrong.

The platform allows cloud computing of SAR data, but its still in a beta phase.

[sabrina]

Yes, the interferogram itself won’t open - but I can see subsequent products made from the interferogram (debursted etc).