Re: [Gimp-user] recording changes

2014-04-09 Thread Gary Aitken
On 04/06/14 02:00, Alexandre Prokoudine wrote:
 On Sun, Apr 6, 2014 at 6:52 AM, Gary Aitken wrote:
 I'm frustrated by large storage requirements for xcf files resulting from
 processing many jpg image files.  The processing is typically pretty simple,
 crop, curves, with no touch up.  I don't mind the xcf size for images which
 required a lot of detail work, but it's crazy for the majority of them.
 Things which a raw processor encodes in a few KB turn into 60 MB; an 8x
 factor over the original file size.

 Are there any plugins, or is any work being done / planned, on some means to
 save (even a selected set of) operations so the result can be reconstructed
 from the original?  It would save me many GB of space.

 We don't like it either, which is why it's planned for the future.
 Some foundation has already been laid for that in the code, but it
 will take time. As we are volunteers, not paid developers, we can't
 tell you, when this will be available for end-users.

Thanks for the info, Alexandre.  I understand the volunteer issue.
I'm not complaining, just wanted to know what the current situation was.
Was hoping it was in the pipe for a specific release.

Thanks to the gimp team for all your work.

Gary
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Re: [Gimp-user] recording changes

2014-04-06 Thread Alexandre Prokoudine
On Sun, Apr 6, 2014 at 6:52 AM, Gary Aitken wrote:
 I'm frustrated by large storage requirements for xcf files resulting from
 processing many jpg image files.  The processing is typically pretty simple,
 crop, curves, with no touch up.  I don't mind the xcf size for images which
 required a lot of detail work, but it's crazy for the majority of them.
 Things which a raw processor encodes in a few KB turn into 60 MB; an 8x
 factor over the original file size.

 Are there any plugins, or is any work being done / planned, on some means to
 save (even a selected set of) operations so the result can be reconstructed
 from the original?  It would save me many GB of space.

Gary,

We don't like it either, which is why it's planned for the future.
Some foundation has already been laid for that in the code, but it
will take time. As we are volunteers, not paid developers, we can't
tell you, when this will be available for end-users.

Alexandre
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Re: [Gimp-user] recording changes

2014-04-05 Thread scl


On 06.04.2014 at 04:52 A.M Gary Aitken wrote

I'm frustrated by large storage requirements for xcf files resulting from
processing many jpg image files.  [...]

Are there any plugins, or is any work being done / planned, on some means to
save (even a selected set of) operations so the result can be reconstructed
from the original?  It would save me many GB of space.


Hi,

besides the original payload data (here: image information) every file 
format contains
additional technical information for the application's internal use. 
This explains it from a
technical point of view. From a user's point of view: yes, you are 
right. Thank you for pointing it out.


As far as I know there's at least a chance for improvement with the 
switch to GEGL in GIMP 2.10.
GEGL is a graphics library for non-destructive image editing. This means 
it internally stores the set
of processing commands instead of bulks of image data. User of RAW photo 
processors know
this as 'receipt'. Indeed, such a receipt can be stored in a very small 
file.
GEGL itself (separately from GIMP) stores receipts in XML files. For 
more information about a new,

GEGL-based file format for GIMP Mitch could be able to tell more.

Kind regards,

Sven

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