[Users] New Default Attribute sets in OD v3.1.7

Eric Bouanga eric.bouanga at dgb-group.com
Fri May 16 13:44:01 CEST 2008


Dear users,

As you might already notice, OpendTect is provided with some "Default attribute sets" to get the user started.
By selecting  a default attribute set, a window appears to enable the user to select the correct input volume and the correct steering cube.
The development release 3.1.7 comes out with new default attribute sets, which are added to the already existing attribute sets like NN Chimney cube,
NN Salt Cube, dGB Evaluate Attributes, etc... 
These new default sets are mainly filter attributes:

    * The Dip-steered median filter: This filter attribute was before known as "median dip filter", it cleans up the seismic data,removing randomly 
     distributed noise.

    * The Dip-steered diffusion filter: This filter is mainly used to sharpen faults.


    * The Fault enhancement filter: This type of filter is used in the fault/fracture analysis, it is a combination of the above mentioned filters.
        It dramatically sharpens the faults and eliminates random noise and it is a combination of both the diffusion filter and dip-steered filtered.
 

    * The Seismic filters median-diffusion-fault-enhancement: This is the same as the "Fault enhancement filter" but it enables to visualize and modify
      the parameters of the dip-steered median filter, dip-steered diffusion filter and Fault Enhancement Filter.

    * The Ridge enhancement attribute: This filter detects lateral lineaments using different steered similarities (in diagonal, parallel directions)

When using the default attribute sets, please keep in mind that some of the parameter options depend on whether you are using 2D or 3D data as input. 
e.g the inline/crossline stepout field will be replaced by a single trace stepout field in 2D, note also that an attribute set can only contain 2D or 3D 
attributes, mixed attribute sets are not possible.

 
In this new version, an extra help button is added in the attribute set window. The old button (lower help button in attributes set window) 
still directs you towards the general "Attribute set window" help page while the new button (upper help button) will bring you to the specific
attribute help page in the attribute appendix list.

Regards,




-- 
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   Eric Bouanga,

   dGB Earth Sciences B.V.
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