[ITK-users] compressing MetaImages bigger than 4GB leads to data loss

[Dr. Roman Grothausmann]

Dear mailing list members,


Working with a labelled tomogram that is larger than 4GB made me realize that 
when saving the data as a compressed MetaImage (mhd) leads to a complete data 
loss. It seems the way libz is used that files bigger than 4GB are compressed 
incorrectly. If that's not possible the itkFileWriter should issue an error in 
case an image is bigger than 4GB. So far it just goes on as if nothing would be 
wrong and only when opening the image again the reader reports that "Uncompress 
failed".
Is this a bug?

Just as a side node: writing the same file as a compressed TIFF works fine, 
though e.g. imagej/fiji opens the file with MSB swapped.

Any help or hints are very much appreciated
Roman

-- 
Dr. Roman Grothausmann

Tomographie und Digitale Bildverarbeitung
Tomography and Digital Image Analysis

Institut für Funktionelle und Angewandte Anatomie, OE 4120
Medizinische Hochschule Hannover
Carl-Neuberg-Str. 1
D-30625 Hannover

Tel. +49 511 532-9574