CellProfiler/CellProfiler — Issue #127: JIRA [IMG-1127] Improved handling of tertiary objects
Author: thouis
Created: 2011-11-23 20:50:16+00:00
State: open
Labels: current

This issue arises via this two posts:
http://cellprofiler.org/forum/viewtopic.php?f=14&t=1085
http://cellprofiler.org/forum/viewtopic.php?f=16&t=1065
Since tertiary objects are not formed strictly as an XOR operation, if the primary and secondary objects are identical (which can occur if propagation fails), IdentifyTertiaryObjs produces a tertiary obj consisting of a ring when it should effectively be nothing at all. This means that measurements on such objects are not accurate: they return a value when they probably return a NULL.
I'm not sure how to handle such cases; it seems like what we want is a labeled object but the label is"empty" somehow (or treated as such)....

Original reporter: mbray
Jira link: https://jira.broadinstitute.org/browse/IMG-1127
(Original JIRA has attachments.)
Fix version: Current
Assignee: leek

**Comment from mbray on Wed, 8 Sep 2010 13:13:53 -0400:**
Attached pipeline to be run on ExampleFly images. MaskObjs seems to produce the behavior we would want.