[ome-devel] Thumbnails

[Jason Swedlow]

Hi Matthias-

On 26 Aug 2008, at 08:20, Matthias Dunda wrote:

> Hi all,
>
> I finally generated thumbnails for a Dataset:
>
>         List<Image> imgs = OmeroTools.getImagesForDataset(conn, 178);
>
>                 for ( Image i : imgs){
>                         Pixels p = i.getDefaultPixels();
>                         System.out.println("Generated thumb for pix  
> id "+p.getId());
>                         ThumbnailStore tstore =  
> conn.getServiceFactory().createThumbnailService();
>                         tstore.setPixelsId(p.getId());
>                         tstore.createThumbnail(160,120);
>                 }
>
> This worked, /OMERO/Thumbnails got populated, database entries  
> exist...
>

Great stuff.  We look forward to seeing your client applications.   
Are they being released as GPL?  If not, please be aware of the tersm  
of the GPL license  (http://www.gnu.org/copyleft/gpl.html). If you  
are distributing commercial applications, please contact Glencoe  
Software for a commercial license.

> I was finally hoping, that this would speed up loading the pics in  
> the Browser but it doesn't.
>
> So first question: what are thumbnails generally good for? where do  
> they come into play?
>

Thumbnails are used by users to see previews of images.

> Second question: is there a way to speed up the loading in the  
> browser view?
>

You'll have to explain what you want-- what is acceptable for a given  
application.  We are working on various accelerations of the OMERO  
server and clients; see http://trac.openmicroscopy.org.uk/omero/ 
milestone/3.0-Beta3.1 and http://trac.openmicroscopy.org.uk/shoola/ 
milestone/3.0-Beta3.1


> Third question: what is an appropriate size for the thumbs?

It depends on what your users want.  What application are you looking  
for?

>
> Last question (remaining from my last post): what is the method  
> createThumbnails() good for? So far it did nothing for me.
>

I'll let Chris or Josh answer that one.

Cheers,

Jason


> Cheers
> Matthias
>
> --
> Matthias Dunda, Dipl.-Inform.
> c.a.r.u.s. IT AG
> Phone: (040) 5 14 35-0, intl.: +49.40.5 14 35-0
>
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> ome-devel mailing list
> ome-devel at lists.openmicroscopy.org.uk
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