“build overviews” for a mosaic generates black\while tiles

[JamalNUMAN]

Applying “build overviews” for a mosaic generates black\while tiles,

For example, in the screenshots below, in order to let the mosaic appear in all scales, the “build overviews” is applied. However, this generates black\while tiles.

How this might be resolved?

Thank you

Best

Jamal

[RebeccaStrauch__GISP]

Jamal,

check out the links in Mosaic dataset looks like a checkerboard  which has a similar issue.

it also has a link to a blog  Does your mosaic dataset look like a checkerboard? | ArcGIS Blog 

[JamalNUMAN]

Thank you Rebecca for the help.

I went through the links you have already provided but it appears that they don’t provide root solution for the issue. I got no tools that that can fix it.

[DanPatterson_Retired]

did you go through the comments

• make sure they have defined coordinate system
• they view individually fine
• make a new mosaic data set
• a consolidate link which suggests using UNC paths rather than absolute paths
  • https://community.esri.com/thread/179498 
• what have you ruled out?

[JamalNUMAN]

Thanks Dan for the help

Thanks Dan for the help

-make sure they have defined coordinate system (screenshot below)

-they view individually fine (screenshot below)

-make a new mosaic data set (the same issue is repeated in the new mosaic)

-a consolidate link which suggests using UNC paths rather than absolute paths (screenshot below)

-Room in mosaic data appear checkerboard pattern (no solutions are here)

[DanPatterson_Retired]

well that leaves the data type... (ecw)... perhaps passing this on to tech support might be worthwhile

[NeilAyres]

Yes,

my guess would be the problem is the ecw format. This has its own in-build pyramid structure.

Where are the overviews created? Is there anything funny in that path. Have a look in there to see if the tif / jpg overviews are actually there.

Pro-tip : use the Data management / Mosaic dataset / Define overviews tool to specify that the overviews are created inside the fgdb where the mosaic resides. If you don't do this, the overviews are created in a sub-dir next to the fgdb, which is a bit dumb imho.

[NeilAyres]

And, if you open the mosaic in Catalog, can you see the overviews in the mosaic, towards the bottom?

[AhmadSALEH1]

Hi Jamal,

From the define overviews try to increase the overview sampling factor from 3 to 5

Thanks

[JamalNUMAN]

Thanks Ahmad. Not working