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TerraScan User Guide

Navigation: Tool Reference > TerraScan Window > Group pulldown menu

Inspect groups

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Inspect groups

Inspect groups command supports the systematic check of groups. It provides a list of groups from which you can select one group after the other.

The tool includes view settings that define CAD file views displaying the selected group in different view orientations. The selected element is automatically centered in these views. It becomes the active displayset and thus, it is displayed in views for which Points is set to Displayset only in the Display mode dialog. In addition, the tool allows the definition of up to four classification buttons for modifying the class of a group.

To inspect groups:

1. Select the Inspect groups command from the Groups pulldown menu.

This opens the Inspect Groups dialog:

inspect_groups

SETTING

EFFECT

Groups with

Determines which groups are inspected:

One or more points - groups with one or more points in the source class.

Majority of points - groups with the majority of points in the source class.

All points - groups with all points in the source class.

From class

Point class(es) that are included in the group inspection.

_select_classes

Opens the Select classes dialog which contains the list of active classes in TerraScan. You can select multiple source classes from the list that are then used in the From class field.

Trunk diameters

CAD file level that contains circular elements representing tree trunks. The elements may be created by using the Measure Trunk Diameters tool. The elements are used to extract diameter values to show in the list dialog.

Inside fence

Determines how a fence or selected polygon(s) effect the classification:

Not used - fence or selected polygons are ignored.

One or more points - groups are classified if one or more points are inside.

Average xy - groups are classified if the average xy point is inside.

Majority of points - groups are classified if the majority of points is inside.

All points - groups are classified if all points are inside.

Top view

View window that displays the point cloud in a top view.

Second top view

View window that displays the point cloud in a top view.

Front view

View window that displays the point cloud in a front section view. The cross section is 90 degree rotated compared with the Right view.

Right view

View window that displays the point cloud in a right section view. The cross section is 90 degree rotated compared with the Front view.

Section view

View window that displays the point cloud in a section. The section is aligned to the shape of the group. The depth of the section either includes all points of a group or is defined by switching on the Depth option and typing a depth value in the text field.

Isometric view

View window that displays the point cloud in an isometric view.

Camera view

View window that displays the point cloud in a camera view. The view can display images that are referenced by an active image list in TerraPhoto.

Fit view

If on, the selected group is automatically fitted and centered in the view.

Button 1...4

If on, a target class can be selected for classifying the group into another class after inspection.

Remove

If on, the selected group is removed from the list in the Inspect Groups list dialog on button press.

2. Define settings and click OK.

This opens another Inspect Groups dialog that contains the list of groups:

inspect_groups_list

3. Select a line in the list of elements.

This centers the selected group in all view windows defined in the tool’s View settings. You can click on the classification buttons of the dialog to classify a group into another target class.

SETTING

EFFECT

View / Fields...

Select the column(s) to show in group list. Available options:

Group id - numeric identifier of the group.

Point count - the number of points belonging to the group.

Classes - point class number.

Height - the difference between highest and lowest Z coordinates in the group.

Width - the horizontal width of the group. Width is measured towards the minor axis of the group points.

Length - the horizontal length of the group. Length is measured towards the major axis of the group points, perpendicular to Width.

Radius - the horizontal radius of the group. A descriptive average between Height and Width.

Trunk diameter - the trunk diameter according the circular measurement element.

Minimum distance - the lowest distance attribute value in the points of the group.

Maximum distance - the highest distance attribute value in the points of the group.

Best match rating - the classification confidence evaluated with By best match routine.

View / Sort...

Select the attribute to sort the group list. Rows are sorted to the ascending order. The attributes available for sorting are the same as for listing through View > Fields.

Remove

Removes the selected group from the list. The group itself is not deleted. The button is inactive if Remove is switched on in the tool's Classification action settings.

<Class>

Up to four classification buttons defined in the tool's Classification action settings. The button shows the name of the target class.

Show location

Select a line in the list, click on the button and move the mouse pointer inside a view window. This highlights the selected group in the view.

Identify

Click on the button and identify a group with a data click in a view window. This selects the corresponding line in the list.

b_camera_backward

Moves one image backward in the active image list and displays the new image in the camera view. This is only visible if a Camera view is set in the tool's View settings.

b_camera_identify

Click on the button and move the mouse pointer inside a view window. The image closest to the mouse pointer is highlighted. Select an image for the camera view display with a data click. This is only visible if a Camera view is set in the tool's View settings.

b_camera_forward

Moves one image forward in the active image list and displays the new image in the camera view. This is only visible if a Camera view is set in the tool's View settings.

TerraScan User Guide   01.01.2024   © 2024 Terrasolid Ltd