[Geoserver-devel] [JIRA] (GEOS-10039) Strange result from geotiff raster depending on resolution

GeoServer GeoServer Developer
1

Jonas Reinhardt created an issue

GeoServer / BugGEOS-10039

Strange result from geotiff raster depending on resolution

Issue Type:

BugBug

Affects Versions:

2.17.2

Assignee:

Unassigned

Attachments:

orto-correct.png, orto-error.png

Components:

WMS

Created:

27/Apr/21 3:08 PM

Environment:

Windows Server 2012 R2
Oracle Corporation: 1.8.0_211 (Java HotSpot™ 64-Bit Server VM)

Priority:

LowLow

Reporter:

Jonas Reinhardt

We usually prepare our ortophotos with few pyramids, and usually we align the fetched resolution to these pyramids.
A few times a strange phenomenon of repetitive tiles appear for one zoom level.

The example GeoTiff consist of 3 overviews-pyramids:
Base: 32918x51348
Overview1: 10973x17116
Overview2: 3658x5706
Overview3: 1220x1902
Which can be expressed as resolutions (m/pixel)
Resolution: 1.34909836065574,0.449945325314379,0.149995443360977,0.05

If we use resolutions:
… 0.44995,0.29999,0.15 …
we get the strange result

if we change to:
… 0.44995,0.3,0.2,0.15 …
it disapears.

Perhaps this is known bug and bad practice to align the resolutions to the internal overviews, otherwise it is just strange.

Example map with phenomenon
http://maps.projektnav.net/2021/m291az6Tt2v.htm

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