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https://issues.apache.org/jira/browse/IMAGING-182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15242843#comment-15242843
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Gary Lucas commented on IMAGING-182:
------------------------------------
I have one already and would be glad to submit it, but I need a little
information before I proceed. The unit test means a modification to the
TiffRoundtripTest.java module, which I already changed for Item 170. If I add
the change for this item, it would conflict with the older patch. So, there are
a few ways to proceed:
(a) I combine the changes for both items into a single patch (easiest for me,
maybe not the best for the project)
(b) The decision on whether to accept the 170 changes is deferred or
rejected... I scrap the 170 changes in my version of the code and re-implement
the 182 changes on a clean copy of the Apache code...
(c) The project integrates the 170 changes and I submit a clean patch for 182.
Any of the above are fine with me.
Finally, I note that the GeoTIFF specification permits the storage of data in
several different combinations of formats. Apache Commons Imaging can read
almost all of them, but only writes a few. This patch implements just one among
many. So from the perspective of having a "complete implementation of the
spec", this change only moves us a little further along. On the other hand,
many of the remaining formats are pretty specialized, and probably not worth
the effort.
> Enhance TIFF writer to support grayscale images
> -----------------------------------------------
>
> Key: IMAGING-182
> URL: https://issues.apache.org/jira/browse/IMAGING-182
> Project: Commons Imaging
> Issue Type: New Feature
> Components: Format: TIFF
> Affects Versions: 1.0, 1.x
> Reporter: Gary Lucas
> Attachments: Imaging_182_Patch_2016_04_14.patch
>
>
> The current implementation does not permit to storage of grayscale images
> when writing a TIFF output. Grayscales come in handy for converting
> satellite image products to GeoTIFFs for display in GIS applications. The
> current implementation can read grayscale formats but cannot writing them.
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