Ticket #724 (closed defect: fixed)
Opened 2011-08-15T14:23:39-05:00
Last modified 2011-09-01T12:30:14-05:00
Preserve Original Metadata
| Reported by: | hinerm | Owned by: | hinerm |
|---|---|---|---|
| Priority: | major | Milestone: |
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| Component: | bf-itk | Version: | |
| Severity: | serious | Keywords: | |
| Cc: | Blocked By: | ||
| Blocking: |
Description
Ensure BF-ITK plugin is preserving the original image's metadata throughout the read/write process.
If not, modify the plugin to maintain additional key-value pairs as appropriate.
Change History
comment:1 Changed 2011-08-17T14:26:51-05:00 by curtis
comment:2 Changed 2011-08-24T14:47:18-05:00 by hinerm
- Status changed from new to accepted
A test program, itkBFImageInfo has been added to the bf-itk-pipe build. It prints image information both from Bio-Formats, and the itkImageIOBase.
comment:3 Changed 2011-09-01T12:30:14-05:00 by hinerm
- Status changed from accepted to closed
- Resolution set to fixed
The only metadata found as not being preserved was Pixel Type and Number of Components.
ITK has a suspected bug in that if the tiff PLANAR_CONFIGURATION is set to 2, it forces PixelType to rgba and Number of Components to 4. In fact, it should probably be checking the SamplesPerPixel, as if that value is 1 PLANAR_CONFIGURATION is irrelevant. A potential bug report will be filed in ITK's bug tracker.
Bio-Formats' Tiff writer also did not check SamplesPerPixel when setting the PLANAR_CONFIGURATION value, purely relying on the interleaved status.
Resolved in commit 00c2936718db62353f3d4a6bc12d790a0d29f3b4 :
The Bio-Formats Tiff writer will now set PLANAR_CONFIGURATION to 1 (chunky) if SamplesPerPixel is 1, else based on the interleaved status.
To facilitate this, Mark is working on a test program for outputting the key/value pairs from the metadata dictionary.