[ome-users] Initializing a movie without loading to mem

[Curtis Rueden]

Hi Guy,


> However, 'FileStitcher->SetId, filename' will never work for some
> applications where I have too many images to open at any one time (whole
> series is 70Gb+).
> Is it possible to initialise the image series with FileStitcher without
> loading any images, or only a necessary subset?


FileStitcher.setId(String) is only supposed to read a single file from the
detected grouping. It does do a directory listing to synthesize the group's
file pattern (unless you explicitly pass one in), but only actually parses
one file. For performance reasons, it assumes all other files in the group
have the same dimensions.

If you are experiencing different behavior, it is a bug. What are your
symptoms? How many files, how long does it take for setId to return (if it
does return)? Or do you get an OutOfMemoryError?

Regards,
Curtis


On Tue, Jul 10, 2012 at 8:32 AM, Guy Blanchard <gb288 at cam.ac.uk> wrote:

> Hi,
> >From IDL, I'm using your FileStitcher which is working well to identify
> the FilePattern of groups of images, and then accessing specific images
> thereafter is all good.
>
> However, 'FileStitcher->SetId, filename' will never work for some
> applications where I have too many images to open at any one time (whole
> series is 70Gb+).
> Is it possible to initialise the image series with FileStitcher without
> loading any images, or only a necessary subset?
>
> I couldn't find any class methods that would do the job, and documentation
> that you point to on your website didn't seem as far as I could see to
> address this. Sorry if I missed it.
>
> Of your Memory Management options, these seem the kind of thing, but I
> can't see how I can implement them with or combine with FileStitcher.
>         • Crop the view area
>         • Open only a subset of images
>         • Use Virtual Stack
>
> Any help gratefully received.
> Many thanks,
> Guy
>
>
>
> ____________________________________________
> Dr Guy Blanchard
> Department of Physiology, Development & Neuroscience
> University of Cambridge
> Cambridge CB2 3DY
> UK
> gb288 at cam.ac.uk
> ____________________________________________
>
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