Also, additional vaguely related filelist related improvements r Gao, could you test this with your file? I have not ported these changes into the 1. Before this I also manually edited the original. Briefly, when subdatasets are not in play, the jpeg dataset’s ovmanager can actually find the abc. NTF the ovr path E:
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Gao, could you test this with your file?
Opened 9 years ago Closed 9 years ago Last modified 9 years ago. Oldest gadl Newest first Threaded. However, it should be noted that the file has only small overviews so it was necessary to make a read request with dramatic decimation before the overviews kick in. The path issue has been handled via I believe all issues specific to this ticket are corrected.
Download in other formats: But it still can’t find the overview. I would note that a new ticket has been setup to address the geal to mix internal and external overviews. I have corrected the access mode in trunk r and 1. Would you mind creating a new ticket for this? TestUseBlockIO to avoid directio niff there are appropriate external overviews available in trunk r and 1.
NITF — Advanced Driver Information
But in the jpeg in a subdataset case we need access to the NITF file’s. Opened 9 years ago. NTF the ovr path E: I assume this could arise with any of the overview-on-subdataset situations including uncompressed multi-image nitf, netcdf, hdf4, etc.
When opening the first subdataset, it goes into the “if” branch, and it can’t find the external overview file. I jpeg and jpeg compressed nitf files are likely running into the same problem.
As far as I can establish everything is working fine.
[gdal-dev] Re: NITF driver reads GEOLOB, but does not write it.
All this is aimed at ensuring external overviews for nitf files are handled at the nitfdataset level primarily so that information about them can be properly saved to the. While investigating a found some situations with non-jpeg datastreams in the nitf file that buildoverviews can get into a recursive infinite loop and crash.
With this change external overviews on nitf files with or without internal jpeg or jpeg compression and with or without subdatasets should work. Briefly, when subdatasets are not in play, the jpeg dataset’s ovmanager can actually find the abc.
Let me know if problems persist. Also, additional vaguely related filelist related improvements r Powered by Trac 1.
NITF — National Imagery Transmission Format
Last modified 9 years ago. The original embedded jp2 image has 5 levels, which is accounted as the part of 7 levels. Show comments Show property changes.
See TracTickets for help on using tickets. Before this I also manually edited the original.
I haven’t worked out how to make this work yet Patch also applied in 1. Closed 9 years ago. I will investigate this angle in case nit is the same problem.