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Occasional Visitor
Posts: 1
Registered: ‎08-27-2019

GeoCompressor 2018, ECW is shifted

Hi,

 

I am compressing a Geo TIF with a state plane coordinate system using GeoCompressor 2018. The output ecw is shifted about 12 feet from its original position. I am using ArcMap to view both the Geo TIF and ecw file. Does anyone have any idea why this might be happening and if there is a solution for this.

 

ecw_shifted.PNG

 

Thanks!

Moderator
Moderator
Posts: 350
Registered: ‎11-16-2015

Re: GeoCompressor 2018, ECW is shifted

Hi mcarlson,

 

Have you tried to open both images in another software and/or to overlay an external service? Have you checked if, in the ECW header, the EPSG code is the right one?

The GeoTiff is associated with a tfw file?

I mean there is no reprojection with GeoCompressor so the issue should be caused by the interpretation of the advertised coordinate system of the images.

Technical Evangelist
Posts: 153
Registered: ‎02-05-2016

Re: GeoCompressor 2018, ECW is shifted

Hi,

Please create a support ticket. IWe will investigate further.

 

Regards

 

Partha Roy

Hexagon Support