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New Contributor
Posts: 2
Registered: ‎06-27-2016

Tridicon SGM - apparent mesh

Hello everybody

 

I generate a DEM using tridicon SGM on tri-stereo pleiade images.

generated las file shows a mesh (see las_zoom.png attached file)

this mesh is even more visible after las file rasterisation. (see las_raster.png attached file)

 

has anyone ever encountered this problem?

any solution will be welcome.

 

Best regards.

 

Charles.

Frequent Contributor
Posts: 153
Registered: ‎10-27-2015

Re: Tridicon SGM - apparent mesh

I have seen similar squares in eATE and also somewhere else in photogrammetric point cloud generations of Imagine. It is related on processing areas and those sizes. Playing with parameters related on that should change the issue. The data looks like a duplicate area where point density doubles. The result in raster DEM is weird.

 

So play with processing area/window settings to see does it give some effect on this issue.