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Date: Mon, 16 Jan 2006 10:28:33 +1100
From: Daniel Noll <daniel@nuix.com.au>
Organization: NUIX Pty Limited
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To: POI Users List <poi-user@jakarta.apache.org>
Subject: Re: Image extraction
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Nick Burch wrote:
> On Fri, 13 Jan 2006, Daniel Noll wrote:
>> Actually, how long do you think it would take?  We only really need 
>> to get at the binary data for the embedded image files (e.g. source 
>> PNGs), being able to render the vector drawings would be a bonus, but 
>> not necessarily a requirement at this point.
>
> I'm not sure, as I haven't looked that closely at how they're stored.
>
> If you fancied adding two files to bugzilla: a powerpoing document 
> containing a PNG (single page, just the PNG and some text), and the 
> original PNG, then I can look and see if powerpoint actually stores 
> the data as-is.
>
> If the PNG is stored in the PPT file as-is, I could probably knock up 
> something for you in an hour or so over the weekend. If it isn't 
> stored as-is, it'll take much longer (since I'd have to figure out how 
> to turn what's stored into something useful)
Bug created: http://issues.apache.org/bugzilla/show_bug.cgi?id=38283

I had to set the component to "POI Overall" as there was no component 
yet for HSLF.

In the meantime I'll probably be conducting my own tests to see how the 
same image is stored in Word and Excel, unless someone responsible for 
either of those two responds before I finish. ;-)

Daniel

-- 
Daniel Noll

Nuix Australia Pty Ltd
Suite 79, 89 Jones St, Ultimo NSW 2007, Australia
Phone: (02) 9280 0699
Fax:   (02) 9212 6902

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