Ticket #430 (assigned defect)

Opened 5 years ago

Last modified 5 days ago

ASTER HDF Georeferencing Off by 1KM?

Reported by: warmerdam Assigned to: dron (accepted)
Priority: high Milestone:
Component: GDAL_Raster Version: unspecified
Severity: normal Keywords: hdf
Cc: neteler, mloskot

Description (Last modified by mloskot)

Andrey,

Steve Soule from Vexcel has pointed me to an ASTER HDF file which seems to have incorrect georeferencing. He raised the concern because the georeferencing didn't match a GeoTIFF file derived from the file by other software.

I confirmed this, and noticed that the lat/long corners of the image as reported in the metadata don't seem to match the lat/long corners reported after reprojection (in the gdalinfo report).

I will attach the gdalinfo report to this bug report. The file itself is pretty large so I am putting it putting it at the following url for download, assuming you need to do that.

http://pobox.com/~warmerdam/ASTER_DEM20020123085409.hdf

Attachments

hdfout (6.0 kB) - added by warmerdam on 11/05/03 10:27:35.
gdalinfo report for file.

Change History

11/05/03 10:27:35 changed by warmerdam

  • attachment hdfout added.

gdalinfo report for file.

11/05/03 10:30:31 changed by warmerdam 

By the way, Steve reports the GeoTIFF file derived from the HDF file
was generated with a program called HEG_Win, though the file itself reports
it was generated with Erdas Imagine.  However, hopefully you will be able
to establish from the Aster file itself whether there is an inconsistency.

11/07/03 09:20:27 changed by dron 

Frank,

Whether it is possible to see gdalinfo report for mentioned GeoTIFF file? In
fact I'm aware of problems with ASTER DEM georeferencing and I thought that I
did my best to get it working. It is good news that there is a tool that works
better. The only question remains: how those tool works :-)

11/07/03 10:10:15 changed by warmerdam 

Andrey, 

The GeoTIFF files gdalinfo report looked like this:

Driver: GTiff/GeoTIFF
Size is 2507, 2402
Coordinate System is `'
Origin = (-116.929440,34.986245)
Pixel Size = (0.000287,-0.000238)
Metadata:
  TIFFTAG_SOFTWARE=IMAGINE TIFF Support
Copyright 1991 - 1999 by ERDAS, Inc. All Rights Reserved
@(#)$RCSfile: etif.c $ $Revision: 1.9.1.2 $ $Date: 2001/12/05 00:33:12Z $
  TIFFTAG_XRESOLUTION=1
  TIFFTAG_YRESOLUTION=1
  TIFFTAG_RESOLUTIONUNIT=1 (unitless)
Corner Coordinates:
Upper Left  (-116.9294396,  34.9862451) 
Lower Left  (-116.9294396,  34.4156149) 
Upper Right (-116.2087937,  34.9862451) 
Lower Right (-116.2087937,  34.4156149) 
Center      (-116.5691167,  34.7009300) 
Band 1 Block=2507x1 Type=Float32, ColorInterp=Gray
GDAL: GDALClose(aster_dem20020123085409.tif)

GDAL: GDALDeregister_GTiff() called.

However, this isn't likely to help you much as the TIFF file had been 
resampled and reprojected.

12/22/07 07:33:22 changed by mloskot

  • cc changed from neteler@itc.it to neteler@itc.it, mloskot.
  • description changed.

12/29/07 11:13:59 changed by neteler

  • cc changed from neteler@itc.it, mloskot to neteler, mloskot.

07/15/08 06:37:55 changed by mloskot

  • keywords set to hdf.