Making NoData pixels transparent on Image Service / Image Layer

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09-27-2022 03:20 AM
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JustinOdell
Occasional Contributor III

Hi all,

I have published an orthomosaic as an Imagery Layer / Image Service. The NoData pixels (R 255, G 255, B 255) are displaying as white and surround the image in a rectangular fashion.

Is it possible to make the NoData pixels transparent once the service has been published? Or can this configuration only be done inside of ArcGIS Pro prior to publishing? If it can only be done prior to publishing, what is the recommended workflow? Ideally, I do not wish to export a new raster if it can be helped.

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JustinOdell
Occasional Contributor III

I ended up right clicking on the raster in Catalog and going in to the properties to change the NoData values. Then republished and voila!

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TonyContreras_Frisco_TX
Occasional Contributor

You should set up the mosaic dataset properties to specify NoData values before building your overview images, then publish the service. If the service exists already, I would delete it, update the mosaic dataset according to the help page, then rebuild the overviews and republish the service.

JustinOdell
Occasional Contributor III

I ended up right clicking on the raster in Catalog and going in to the properties to change the NoData values. Then republished and voila!

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