[Geoserver-users] RV: Random blank granules in image mosaic

[Briones G. P. <pb...@tr...>]

Hello every body.

I am having problems rendering an image mosaic (GeoTIFFF COG files stored in Google Storage). The mosaic is made up by 97 granules and some of them overlap.

The problem arises when rendering the mosaic, at different zoom levels some granules render blank, but not always: one granule could be blank at certain zoom, but if you move slighty the pan control or make zoom in or out, this image renders well. The problem seems to be random.

COG files characteristics:

·         Have overviews and inner tilling

·         pixel depth: 16 bitsPixel

·         Type: short

·         Compression: LZW

Examples:
These examples show first the image with the problem, and the correct image after a small pan:

1
https://drive.google.com/file/d/1DG_fXsGYPQ49rO-XKTRB73ZbYMXdtaq8/view?usp=drive_link
https://drive.google.com/file/d/17-scBDNe_BFWP2q6A5oK_ymPXg8q9Kih/view?usp=drive_link

2
https://drive.google.com/file/d/1mcc7CIkN3p80jfRZNk4BgTDX8MRI8F2J/view?usp=drive_link
https://drive.google.com/file/d/1WxJwf3DWwuriUWawsBy1Bgws29QK9-c_/view?usp=drive_link


Any ideas of this behavior?

Thanks in advance

Regards.
[http://www.tragsa.es/SiteCollectionImages/Relaciones%20Institucionales%20(Prensa)/FIRMA%20OUTLOOK/2023tragsatec.png]

Briones Garcia, Pedro
JGAP Sist Inform Geográfica
S.Información Geográfica / G.Sist.Inf. Geografica
Grupo Tragsa - SEPI



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