[Geoserver-devel] [JIRA] (GEOS-9315) Nodata is not made transparent after channelSelect+contrastEnhancement on multibands dataset

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Daniele Romagnoli created an issue

GeoServer / GEOS-9315

Nodata is not made transparent after channelSelect+contrastEnhancement on multibands dataset

Issue Type:	Bug
Assignee:	Daniele Romagnoli
Components:	WMS
Created:	02/Sep/19 2:45 PM
Priority:	Medium
Reporter:	Daniele Romagnoli

input: A 6bands INT16 GeoTIFF image with nodata value=0 on each band. A Style selecting 3 bands (with ChannelSelect) and applying values rescaling to 0 - 255 (with ContrastEnhancement) is applied to that image. Output PNG is requested. The 0,0,0 pixels are displayed as Black whilst, being nodata, they should be displayed transparent.

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