Polyline

Polyline drawable is used to segment the very slender objects.

Create a new 3D Polyline

1. Ensure the point cloud is visible

2. Select the "Polyline" tool by clicking on the ‘+’ icon in the Class List on the left.

3. On hovering over the point cloud, the user is able to see a big gray circle along with the mouse pointer.

4. Begin the annotation by left-clicking around the object of interest. To exit annotation mode, press escape

5. Simultaneously, the annotation is being projected in the image(s)

6. The more the number of clicks, the more the lines are added to the polyline

7. Right-click to end the polyline (Note: a right-click also adds a point)

8. A status box appears, confirming the width of the polyline. By default, it is set to 5 meters.

9. Provide the instance and mandatory attributes and save.

An annotation is created and visible on the Class List. A zig-zag line is drawn beside the annotation to denote it is a polyline.

Select a 3D Polyline

• Use the mouse and click on the annotation

• Select the annotation from the Class List

Change the Dimensions of a 3D Polyline

Select the annotation

• Drag the vertex to make the annotation more precise

• Hover near the edge of the polyline and a ‘+’ symbol appears. Click and a new vertex is added to that edge

• Snapping a vertex to its adjacent vertex deletes a vertex from the polyline.

Add Segment to 3D Polyline

There are several ways to select the annotation.

• Use the mouse and click on the annotation

• Select the annotation from the Class List

Change the Dimensions of a 3D Polyline

Select the annotation

• Drag the vertex to make the annotation more precise

• Hover near the edge of the polyline and a ‘+’ symbol appears. Click and a new vertex is added to that edge/line.

• Snapping a vertex to its adjacent vertex deletes a point from the polyline.

Change the Category of a 3D Polyline

Select the annotation

1. Open the Annotation Details panel

2. Select the new classification

3. Save

Copy/Paste a 3D Polyline

Inter Frame

This copies and pastes the dimensions along with the annotation details in the next/previous frames

• Select the annotation

• Press the hotkeys CTRL+C

• Move to the next/previous frame

• Press the hotkeys CTRL+V

Remove a 3D Polyline

There are several ways to delete the 3D polyline. First, select the annotation you want to remove, then do any of the following

• Press the hotkey (Del)

• Contextual click the annotation and select Add/Delete annotation

• Click the trash icon next to the object in the Class List on the left.

Trash Icon

Since there are multiple instances of the same annotation within the same frame and across the sequence, the user is prompted with the following 4 choices:

Current Frame x

Delete selected annotation

This deletes the annotation from the current frame and specific sensor i.e. the count for this is always 1

Delete all annotations of object (n)

This deletes the annotation from the current frame and all sensors. The number of annotations present on the frame is mentioned beside this option.

Entire Sequence

Delete selected annotation (n)

This deletes the annotation from the entire sequence on the specific sensor. The number of annotations present on that sensor is mentioned beside this option

Delete all annotations of object (n)

This deletes all the annotations from the entire sequence visible in all sensors. The number of annotations present in the sequence is counted and mentioned beside this option.