[Geoserver-devel] [JIRA] (GEOS-8538) Interpolated raster data is rendered with border

Gerald Fiedler created an issue

GeoServer / BugGEOS-8538

Interpolated raster data is rendered with border

Issue Type:

BugBug

Affects Versions:

2.10.1, 2.12.0

Assignee:

Unassigned

Attachments:

interpolation1.png, interpolation3.png, srtm3.xml

Components:

Image mosaic JDBC, WMS

Created:

20/Jan/18 10:55 PM

Environment:

Linux Ubuntu 14.04.5 x86_64

Priority:

MediumMedium

Reporter:

Gerald Fiedler

I am running Geoserver 2.10.1 with Pyramid, Image Mosaic JDBC and WPS plugins installed.

I have configured “Web Map Service” / “Raster Rendering Options” / “Default Interpolation” to “Bicubic”. But when I view an image mosaicking raster layer with “Open Layers” and zoom into the map then a border surrounds the map at high zoom levels. The border width seems to be 1,5 pixel of raster data. I have attached 2 screenshots to explain: one with interpolation=1 and another with interpolation=3 at zoom level 1:4k. The effect begins to appear at zoom level 1:34k. At zoom level 1:1k the whole map is black. At zoom level 1:100 the map gets white. When I zoom in and out several times, then GeoServer hangs with high cpu load.

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