Yeah---- actively decoding the NDPI files is a huge pain, mostly because the NDPI format breaks most if not all standards and so requires a lot of tweaking. The Bioformats library, in theory, can read these, although it actually breaks with files bigger than 65Kx65K pixels.<div>
<br></div><div>I wound up doing a bit of hacking to transcode NDPI files so I can use them on my imaging portal ( <a href="http://cancer.digitalslidearchive.net/">http://cancer.digitalslidearchive.net/</a> ) but I didn't use openslide for decoding.</div>
<div><br></div><div>IF you check the archives, there are a bit of very detailed conversations about where/how/what is needed to integrate NDPI files... between what's posted here, and what one could glean from the support now integrated into Bioformats... it's more of a matter as Adam said of having a dedicated coder work on it, vs being an impossible challenge.</div>
<div><br></div><div><br></div><div>dg<br><br><div class="gmail_quote">On Sun, Oct 7, 2012 at 9:16 AM, Adam Goode <span dir="ltr"><<a href="mailto:adam@spicenitz.org" target="_blank">adam@spicenitz.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><p dir="ltr">I am not sure if anyone is actively working on this. Benjamin would probably know better. There have been some recent discussions about workarounds on this list.</p>
<p dir="ltr">If you could donate a few weeks time of an experienced developer, it could probably be done.<span class="HOEnZb"><font color="#888888"><br></font></span></p><span class="HOEnZb"><font color="#888888">
<p dir="ltr">Adam</p></font></span><div class="HOEnZb"><div class="h5">
<div class="gmail_quote">On Oct 7, 2012 9:08 AM, "Daniel Alievsky" <<a href="mailto:daniel@smartimtech.com" target="_blank">daniel@smartimtech.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello,<br>
<br>
our company is using OpenSlide for reading extra-large images in our<br>
Simagis Live system (<a href="http://live.simagis.com/" target="_blank">http://live.simagis.com/</a>) - web-based Java<br>
application for storing and processing very large images.<br>
OpenSlide is a good system, allowing to read most popular formats, but<br>
right now we urgently need an ability to read .ndpi files (Hamamatsu<br>
format), and the last OpenSlide version failed to read them:<br>
<a href="http://openslide.cs.cmu.edu/download/openslide-testdata/Hamamatsu/" target="_blank">http://openslide.cs.cmu.edu/download/openslide-testdata/Hamamatsu/</a><br>
(I used the last Windows binaries from <a href="http://openslide.org/download/" target="_blank">http://openslide.org/download/</a>.<br>
An attempt to access these 3 .ndpi-files shows a set of error messages<br>
boxes and fails.)<br>
<br>
It seems to be strange, because OpenSlide successfully reads another<br>
Hamamatsu VMS-format, not packed into a single file:<br>
<a href="http://openslide.cs.cmu.edu/download/openslide-testdata/Hamamatsu-vms/" target="_blank">http://openslide.cs.cmu.edu/download/openslide-testdata/Hamamatsu-vms/</a><br>
Unfortunately, I didn't find any ready C++ or Java library, allowing to<br>
read .ndpi-files, containing images larger than 65530x65530, and it is a<br>
problem - right now we need to read .ndpi-files of our customers with<br>
very large pictures.<br>
<br>
Could you tell us, are you planning to add the support of .ndpi-files<br>
into new OpenSlide versions in the nearest future? Are there any time<br>
forecasts here?<br>
<br>
Thank you.<br>
<br>
Best regards,<br>
Daniel Alievsky<br>
Smart Imaging Technologies company<br>
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</blockquote></div>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br>David A Gutman, M.D. Ph.D.<br>Assistant Professor of Biomedical Informatics<br>Senior Research Scientist, Center for Comprehensive Informatics<br>Emory University School of Medicine<br>
</div>