[Gdal-dev] GeoTIFF file which crashes GDAL?

[Frank Warmerdam]

Ben Discoe wrote:

> I have a GeoTIFF which was output from the MultiSpec remote-sensing
> analysis program (http://www.ece.purdue.edu/~biehl/MultiSpec/).  It
> crashes in GDAL (on Windows) when i try to load it.  Tested it with
> gdalinfo, and that crashes too.
> 
> I've uploaded it here: http://vterrain.org/Temp/problem.zip
> 
> It loads fine in PhotoShop, so there must be something about the
> non-picture TIF elements in it.  It would be fine if GDAL gave an error
> and refused to load it, but a crash is not good..

Ben,

I checked the image, and run into similar problems.  The tiffdump reports:

problem.tif:
Magic: 0x4949 <little-endian> Version: 0x2a
Directory 0: offset 8 (0x8) next 524296 (0x80008)
SubFileType (254) LONG (4) 1<0>
ImageWidth (256) LONG (4) 1<1702>
ImageLength (257) LONG (4) 1<1405>
BitsPerSample (258) SHORT (3) 3<8 8 8>
Compression (259) SHORT (3) 1<1>
Photometric (262) SHORT (3) 1<2>
StripOffsets (273) LONG (4) 1<366>
SamplesPerPixel (277) SHORT (3) 1<3>
RowsPerStrip (278) LONG (4) 1<1405>
StripByteCounts (279) LONG (4) 1<2391310>
XResolution (282) RATIONAL (5) 1<1>
YResolution (283) RATIONAL (5) 1<1>
PlanarConfig (284) SHORT (3) 1<1>
ResolutionUnit (296) SHORT (3) 1<1>
SampleFormat (339) SHORT (3) 3<1 1 1>
33550 (0x830e) DOUBLE (12) 3<28.5 28.5 0>
33922 (0x8482) DOUBLE (12) 6<0 0 0 397931 847177 0>
34735 (0x87af) SHORT (3) 20<1 1 0 4 1024 0 1 1 1025 0 1 1 2052 0 1 9001 3072 0 1 
32617>

Directory 1: offset 524296 (0x80008) next 490688554 (0x1d3f502a)
5401 (0x1519) 4447 (0x115f) 236019477<>
3601 (0xe11) 6506 (0x196a) 604793365<>
...

So the main problem seems to be that the second directory starts
at 524296 which is in the middle of the first image (2391310 bytes
starting at 366).  Given the mess that is the second directory I
would guess the image was written over the directory.  So GDAL
and some of the libtiff tools crash trying to read the second
directory.

I tried hacking up version of GDAL that would just read the first
directory, and it still resulted in corruption part way down the image.
I don't really know why, but having spent an hour or two on this image
I am ready to throw in the towel.

Later,

-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | Geospatial Programmer for Rent