Convert a Photoshop Batch process to GIMP or ImageMagick process that can be scripted from a command line

Avg Bid (AUD)
Project Budget (AUD)
$30 - $250

Project Description:
We presently have a Photoshop Batch process which modifies a set of images to produce a set of output images. We need to be able to automatically run this process from a command line, however the Photoshop Batch process cannot be run from the command line (it requires a user to start it off). Assume that we need to run this process as a Windows Scheduled task, or from Linux under CRON (either Windows or Linux scripted solution both acceptable).

The steps must be *exactly* the same as the Photoshop steps, so that the outcome is consistent with existing.

there must NOT be any human interaction required, this process needs to be completely automatci.

Please review the attached image showing the sequence of commands that needs to be altered. Note that there are some 'polygon' selections that need to be matched identically, you will need to get these masks out of Sherlock

Additional Project Description:
05/12/2013 at 6:26 EST
It is actually preferable to run the script as an automated Photoshop process (rather than having to convert to GIMP/ImageMagick). This script needs to be run regularly (every few hours). Running a batch file in a scheduled task would be acceptable.

The current method of running the script within Photoshop is to manually select "File --> Automate --> Batch..." then pick our custom Action Set & corresponding Action, then simply 'OK' as the default input/output folders remain fixed.

This would need to be completely automated, i.e. no user interaction.

05/12/2013 at 6:31 EST
Bidders please check your understanding of the Batch process I am presently using, and whether your planned approach will work with this (and whether simply automating the existing Photoshop Batch process within a scheduled task, which is an acceptable solution, would allow for a simpler approach).

Skills required:
Photo Editing, Photoshop, Shell Script
Additional Files: PhotoshopActionCommands.png Screenshot-of-batch-process-used.png
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