ImageWorker rescaleToBytes sometimes fails to preserve source dynamic
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Key: GEOT-2562
URL: http://jira.codehaus.org/browse/GEOT-2562
Project: GeoTools
Issue Type: Improvement
Affects Versions: 2.6-M1, 2.5.6
Reporter: Simone Giannecchini
Assignee: Simone Giannecchini
In case the source image is constant and has a value between 0 and 255, that
means that it can be ported as is to a byte image, the rescaleToBytes tries
anyway to rescale the dynamic resulting in an image that has a constant value
of 0.
We need to fina a way to bypass the rescale operation when the min and maximum
for each band are close to one another and relay on the clamping capabilities
of the format operation.
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