Zeiss ZVI file format support development for OpenSlide

Mathieu Malaterre mathieu.malaterre at gmail.com
Thu Jul 12 10:54:51 EDT 2012

Looks like other are also recoding without libgsf but require libpole:



On Thu, Jul 12, 2012 at 3:26 PM, Alexandre Kharlamov
<kharlamovalexandre at gmail.com> wrote:
> Greetings!
> For last two days I've been actively developing the code for reading
> ZVI file format. I chose the bottom-up approach and created a little
> proof-of-concept application. All it does is outputs to the screen the
> internal directory structure of the ZVI file provided and outputs a file
> thumbnail.bmp. Currently the input file has to be named t5.zvi
> Attached is the source file zvi.c as well as captured textual output
> in result.txt, plus the image thumbnail.bmp. Results were acquired
> using Mailly Philippe's file
> 120523_120514-2b_Trial5-120510_11b_Ank(IgG2b350)Nav1.6(Rb488)KCNQ2(GP594)perip(RbCy5)
> of total size 165 megabytes. It has lots of images which is reflected
> in the amount of the internal directory entries.
> Benjamin: as far as libgsf, i decided not to use it. The file format is
> simple
> enough to be read by hand, and what I can get from it in under 300 lines
> of bare C code, hopefully, proves that.
> Best regards,
> -Alexandre Kharlamov
> On 07/09/12 23:20, Benjamin Gilbert wrote:
>> On 07/08/2012 01:40 PM, Alexandre Kharlamov wrote:
>>> Basically, it's a OLE2 compound document storage format, same as
>>> the one used for Office 97 documents.
>> You will probably want to take a look at libgsf.
>>> My question is, do I need to
>>> be able to output those channels separately, or should I only care about
>>> the resulting full-color image? Is there ever more than 3 stains used?
>> I suggest you initially handle these slides as RGB images using the
>> existing OpenSlide API.  This will allow you to implement and test your
>> new driver using existing tools, and only then confront the N-channel
>> API issues.
>> --Benjamin Gilbert
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