ImageEngine/cortex — pull request #171 by goddardl (2013-11-07 23:12:03+00:00)
Title: Extended the ImageDiffOp options.

Added an option to the ImageDiffOp that allows offset display windows of the same size to be aligned before comparison.

This option was added because conceptually, two images that have their display window and data window offset by some arbitrary offset are still the same when the display windows are overlapped.