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https://issues.apache.org/jira/browse/IMAGING-311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bruno P. Kinoshita updated IMAGING-311:
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Fix Version/s: 1.0-alpha3
> Read TIFFs with multiple floating-point samples
> -----------------------------------------------
>
> Key: IMAGING-311
> URL: https://issues.apache.org/jira/browse/IMAGING-311
> Project: Commons Imaging
> Issue Type: New Feature
> Components: Format: TIFF
> Affects Versions: 1.0-alpha2
> Environment:
> [IMAGING-251|https://issues.apache.org/jira/browse/IMAGING-251]
> Reporter: Gary Lucas
> Priority: Major
> Fix For: 1.0-alpha3
>
> Attachments: NBS_Example.jpg
>
>
> I propose to extend Commons Imaging to support reading TIFF files that
> contain floating-point formats that feature more than one sample. The
> ability to support floating-point samples was introduced in
> [ISSUE-251|https://issues.apache.org/jira/browse/IMAGING-251]. But that
> implementation was limited to only those files that provided a single sample
> per raster cell (e.g. "a single sample per pixel"). The ability to read files
> with multiple samples per raster cell would extend the usefulness of the
> Commons Imaging API, particularly for geophysical applications.
> If anyone knows of good sources for test TIFF files that use this format,
> please let me know.
> *Background*
> In addition to conventional image data, TIFF files can provide floating-point
> numerical information. This feature is often used for geophysical data (in
> GeoTIFF files), but can also be applied to other uses. Although the existing
> implementation can support files which give a single value per raster cell,
> there are some products that carry multiple samples per cell. Examples
> include products that give both a measured value and a corresponding accuracy
> estimate (i.e. 245.6 meters plus or minus 0.5 meters). Some geophysical
> products give vectors (gravitational potential, wind vectors, ocean currents,
> etc.).
> Changes would involve extensions to the classes in the TIFF datareader
> package as well as the TiffRasterData class.
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