commons-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Gary Lucas (JIRA)" <>
Subject [jira] [Commented] (IMAGING-182) Enhance TIFF writer to support grayscale images
Date Fri, 15 Apr 2016 11:40:25 GMT


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 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:
>             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.  

This message was sent by Atlassian JIRA

View raw message