Aperio slides with 33003 compression

David Gutman dagutman at gmail.com
Wed Dec 12 15:51:08 EST 2012

let me know if/when it gets posted--- I've tiled a couple of hundred 33003
files with (largely) successful results..

On Wed, Dec 12, 2012 at 3:49 PM, Patrick, Todd <tpat at illinois.edu> wrote:

> We have been trying to tile an Aperio slide with 33003 compression for use
> with the NYU Virtual Microscope (
> http://code.google.com/p/virtualmicroscope/) project.  We are using the
> slide tiling python scripts provided with the project.  The scripts use
> OpenSlide to process SVS files using 33003 compression.  However, we have
> hit a snag with the larger SVS files we want to process.
> One of the slides is roughly 98000x42000 in size.  We have run across some
> segmentation faults and values that are too large to be stored in certain
> data types (i.e. int types).  We have worked through the source (mainly the
> Python Imaging Library) and corrected some issues.  I came across the
> following page asking for some test data:
> https://github.com/openslide/openslide/wiki/DesiredTestData
> We would be willing to provide some test data, particularly the current
> SVS file that we are having issues with.  Maybe with someone else taking a
> look at this problem slide, these issues could be resolved quicker.  Where
> can I send this SVS file?  Thanks
> Todd
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David A Gutman, M.D. Ph.D.
Assistant Professor of Biomedical Informatics
Senior Research Scientist, Center for Comprehensive Informatics
Emory University School of Medicine
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