Hi,

I tried to load a geotiff image georeferenced with transformation matrix in
OJ 1.6rc1 and it failed with the message:
"Neither geotiff tags nor worldfile found.
This is not a valid geotiff file"

As far as I understood, GeoTiff georeference information can be stored in 3
distinct formats (http://www.gdal.org/frmt_gtiff.html):
tiepoint and pixel size
transformation matrix
GCP.

Looking at the code in OJ trunk, I see that only one method to read the
georeference information is used, based on the TIFFTAG_GEO_TIEPOINTS TIFF
tag.

Slighty changing the code to also include reading the
TIFFTAG_GEO_TRANS_MATRIX TIFF tag allows the tif file to be opened
successfully in OJ.

(I don't know, though, how to deal with GCP georeference, as there can be
an arbitrary number of GCPs)

Should I submit a ticket, send a patch ?

Thank you and a big thank for the latest release to come !

Nicolas
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