About your troubles with script-fu:
I assume you're using the script “batch-gimp-lqr-full-use-id”, right? Did you also try with “batch-gimp-lqr-full”? Did you try to do the job in steps (with small images) and check what exactly is going wrong (e.g. using the graphical interface to inspect the intermediate results)?
Can you post the script (or the command line) you're using, or the relevant part of it?
About big images:
unfortunately it is currently impossible to do the rescaling per tile (this is because deciding where to rescale is a “global” operation); an implementation which could save some memory using the disk could maybe be done, but not in short time (and it would likely be extremely slow, too).
There are however a few ways to save some memory, which are:
- reducing as much as possible the number of colour channels of the images (e.g. you might remove the alpha channel from the main layer if not needed, and use monochrome preservation/discard/rigidity layers if needed)
- also, reducing as much as possible the size of the auxiliry layers might help (e.g. if you need to mask a region, crop the layer to such region)
- another way to save some momory is more aggressive, causes a considerable slowdown and requires fiddling in the code and recompiling the plugin, but in case you need it here it is: you should edit the file render.c under the src subdirectory of the plugin source code distribution, go to line 218 (i.e. after a number of lines which all begin with lqr_carver_set_…) and add exactly this line:
lqr_carver_set_use_cache(carver, FALSE);
Then save the file and recompile the plugin with make. BTW if you find this is actually useful I may consider adding somewhere an option for memory saving in the future, so let me know if you try this.
