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Contributor
Posts: 45
Registered: ‎05-11-2017

Remove white backgroud

[ Edited ]

Hi all,

 

I have orthophoto mosaic as single ECW v2 file. Size of file is about 135 GB.

In the image there are white bacground. Pixel values of wihte backgraounds are from 251-255.

Does anybody have an idea how to remove background?

 

Best regards,

Micko

Staff
Posts: 585
Registered: ‎02-02-2016

Re: Remove white backgroud

Hi Micko,

 

Try using the Create ECW Transparency tool found under ERDAS IMAGINE's Manage Data tab to add an opacity layer to your ECW v2 image. The only prerequisite is to define the boundary for your image with either an AOI or Shapefile polygon.

 

Create ECW Transparency workflow

 

Regards,

 

Stephen Bent

Hexagon Geospatial Support

Highlighted
Contributor
Posts: 45
Registered: ‎05-11-2017

Re: Remove white backgroud

Hi Stephen ,

 

Thank you for suggestion.

 

I used Easy Trace tool to draw boundary poligon, and after that i started Create ECW Transparency tool. It will take som time. For 6 hours it in on 8 %.

 

Regards,

Micko

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