On 03/04/2017 09:42 PM, Even Rouault wrote:
On samedi 4 mars 2017 18:55:03 CET Micha Silver wrote:
> Hello:
> (I'm double posting as this problem is somewhere between GDAL and QGIS.)
>
> I have converted an ECW compressed aerial photo to geotiff with JPEG
> compression on a Windows computer with gdal_translate. The resulting tif
> image displays fine with QGIS on the Windows machine. GDAL version
2.1.3
> on the Windows computer, and QGIS 2.18.4 My command was similar to:
> gdal_translate -of GTiff -projwin ..... -co TILED=YES -co TFW=YES -co
> COMPRESS=JPEG -co PHOTOMETRIC=YCBCR in.ecw out.tif
>
> I then copy the tif (and tfw) to my Linux machine, and try to open with
> QGIS, but QGIS crashes immediately. I should note that gdalinfo
shows full
> information on both the Windows and Linux systems. On the Linux computer
> GDAL is 2.1.2 and QGIS is 2.18.4 .
On the Linux system where this crashes with QGIS, could you do :
gdalinfo -checksum -stats the.tif
If this crashes, the issue is clearly in GDAL. Otherwise it is likely
in QGIS.
No crash, but I do see a Warning:
gdalinfo -checksum -stats kidron_e2.tif Driver: GTiff/GeoTIFF Files:
kidron_e2.tif Size is 45200, 36000 ....
Warning 1: JPEGLib:Premature end of JPEG file Minimum=0.000,
Maximum=255.000, Mean=163.947, StdDev=38.307 Checksum=49932 Metadata:
STATISTICS_MAXIMUM=255 STATISTICS_MEAN=163.94735676131
STATISTICS_MINIMUM=0 STATISTICS_STDDEV=38.30668730016 Band 2
Block=256x256 Type=Byte, ColorInterp=Green Description = Green
Minimum=0.000, Maximum=255.000, Mean=167.305, StdDev=32.125 Checksum=52
Metadata: STATISTICS_MAXIMUM=255 STATISTICS_MEAN=167.3047566274
STATISTICS_MINIMUM=0 STATISTICS_STDDEV=32.124800654502 Band 3
Block=256x256 Type=Byte, ColorInterp=Blue Description = Blue
Minimum=0.000, Maximum=255.000, Mean=146.241, StdDev=31.604
Checksum=11457 Metadata: STATISTICS_MAXIMUM=255
STATISTICS_MEAN=146.24062233882 STATISTICS_MINIMUM=0
STATISTICS_STDDEV=31.603809219917
Also I have found that creating overlays seems to solve the problem
(?!). After running:
gdaladdo --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW
YCBCR --config INTERLEAVE_OVERVIEW PIXEL -r average kidron_e2.tif 2 4 8 16
the tiff opens fine in QGIS.
Regards,
Micha
>
> Any ideas what could be the cause of QGIS crashing with the
gdal_translate
> converted tif image? Is there something that needs to be done on
windows to
> create a Linux usable geotiff??
>
> Thanks
--
Spatialys - Geospatial professional services
http://www.spatialys.com
--
Micha Silver
cell: +972-523-665918
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