About 3D objects

3D objects are objects that can be viewed in a scene and are displayed as objects on the Dataflow window.

Some key characteristics of 3D objects are described below:

some 3D objects are created in Echoview while others are imported
to view a 3D object you must select it for viewing in a scene
once a 3D object has been created or imported, it is stored as part of an EV file and is separate from the echogram data or file from which it was created/imported (with the exception of model objects).
a 3D object's properties can be modified using the 3D Object Properties dialog box. The type of 3D object is reported on the General page of that dialog box. The specific details (metrics) of an object can be found in the Further information section of the General page and can be exported.
3D objects can be exported for viewing or processing in other programs
some 3D objects are flat (2 dimensional) but exist in 3D space
integration analysis results are available for 3D regions on screen and as an export

The following table lists the supported 3D object types:

3D object type	Description	How added to EV file
Surface	A 3D representation of a surface. The following sub-types are supported:
	Surface from line A surface created from a line (including sounder-detected bottom) in an echogram	Created in Echoview
	Detected surface A detected surface in a multibeam echogram	Created in Echoview
	External surface A surface created outside of Echoview	Imported
	Surface from object a surface created from a 3D object	Imported
	Virtual surface A range, depth or linear offset surface	Created in Echoview
3D Region	A region of 3D space enclosed by a surface. 3D Regions may contain vacuoles.	Created in Echoview, or Imported
3D Region Class group	A group of 3D regions with a same region class. Created when 3D schools are detected.	Created in Echoview, or Imported
3D Region track	A group of 3D Regions created by detecting 3D region tracks.	Created in Echoview
3D Region track group	A group of 3D Region tracks created by detecting 3D region tracks.	Automatically created with 3D region tracks.
3D polyline	A line consisting of a series of 3D points.	Imported
3D polyline group	A group of 3D polylines.	Automatically created with 3D polylines.
3D single targets	A 3D object consisting of a collection of 3D points representing single targets.	Created in Echoview.
3D single targets group	A group for the 3D single targets object.	Automatically created with 3D single targets.
3D fish track	A 3D object consisting of 3D points representing single targets in a fish track.	Created in Echoview.
3D fish track group	A group of 3D fish tracks.	Automatically created with 3D fish tracks.
Echogram curtain	A 3D representation of a single beam echogram. Contains one or more Echogram curtain segments.	Created in Echoview
Echogram curtain segment	Part of a 3D representation of a single beam echogram. Contained within an Echogram curtain.	Automatically created with Echogram curtains
Multibeam ping curtain group	A grouping of Multibeam ping curtains. Contains one or more Multibeam ping curtains.	Automatically created with Multibeam ping curtain groups
Multibeam ping curtain	A 3D representation of a single multibeam ping. Contained within a Multibeam ping curtain group.	Created in Echoview
Raster image	A 3D representation of a flat image consisting of a raster of pixels. They can be displayed in scenes as flat planes or used to color surfaces. An image created from a standard image file format (.jpg, .jpeg, ,bmp,.png, .tif, .tiff) with or without a related ESRI world file.	Imported
Model	A Wavefront 3D object (.obj)	Imported

Note: 3D objects that are created by default are Water surface, Cruise track and 3D regions of class "Unclassified regions".

About 3D objects

See also