Andrea Aime created GEOT-4144:
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Summary: ImageWorker.writePNG will write out paletted 16bit PNG
files (which cannot exist, out of spec)
Key: GEOT-4144
URL: https://jira.codehaus.org/browse/GEOT-4144
Project: GeoTools
Issue Type: Bug
Components: coverage
Affects Versions: 8.0-M4, 2.7.3
Reporter: Andrea Aime
Assignee: Andrea Aime
PNG is defined to work with palettes of 8 bits, but does not have a notion of a
16bit palettes. When faced with a 16bit palette image the worker will still
write out a PNG with a 16 bit palette and nothing will be able to read such
file. In this case it has to expand it to RGB to preserve color information and
still allow readers to make sense of it
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