CesiumGS / CesiumGS/cesium

Artifacts on WMTS image tiles

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#11,468 2 comments 0 reactions 0 assignees View on GitHub
category - terrain and imagery type - bug
Dominant language
JavaScript
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Description

[Reported on the forum](https://community.cesium.com/t/weird-artifacts-with-wmts-map-tiles/25122).

> I’m working on some code which can move map tiles (created from geo-tiff), and I’m getting some weird visual effect.
I don’t know if this is a bug in the CesiumJS engine, or I’m doing something wrong.
Any help would be appreciated.

> Here’s the [sandcastle example](https://sandcastle.cesium.com/#c=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)

> The effect I’m referring to is that when you zoom in, stripes of transparency appear on the imagery layer. When zooming out, the stripes go away.
I can’t understand what 's causing them.

![image](https://github.com/CesiumGS/cesium/assets/4439461/22f53974-362a-46bc-9683-482c33a5896c)

Contributor guide

Open the contributing guide

Research direction

Start by reproducing the linked Sandcastle example and compare the imagery while zooming in and out. Trace the WMTS imagery and tile-rendering entry points to isolate the source of the transparency stripes; done means the reproduction is explained and the artifact is fixed or clearly documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
frontend, web-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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