3D Multi Sensor Fusion - User Documentation
  • Introduction
  • Account Activation
  • QuickServe Platform
  • Project Setup
    • Create Recipe
      • 1. Basic Details
      • 2. Classes
      • 3. Attributes
      • 4. Associations
      • 5. Publish Recipe
    • Create Taskflow
      • 1. Taskflow Details
      • 2. Taskflow Preview & Edit
      • 3. Publish Taskflow
    • Build Jobs
      • 1. Job Details
      • 2. Data Import
      • 3. Data Upload Status
      • 4. Launch Task
    • Batch Export
    • Reports
    • Pre-process Data
    • Storages
  • Annotation Tool
    • Tool Layout
    • Steps to Label
    • Drawing Tools
      • Cuboid
      • Polyline 3D
      • Polygon 3D
      • Brush Sphere
      • Rectangle
      • Polyline 2D
      • Polygon 2D
    • Key Features
      • Progress Bar
      • Keyframe Interpolation
      • Raycaster and Frustum
      • Focus Mode
      • Merged Point Cloud
      • Isolate
      • Outlier
      • Ground and Ceiling Mover
      • Project Points on Image
      • Task Level Attribute Propagation
      • Relationship
      • Intensity Filter and Picker
      • Image Settings Lock
      • Unify Dimension
      • Auto-Grounding for Cuboids and Polylines
    • Tool Shortcuts
  • Audit Tool
  • Visualization Tool
  • API Documentation
    • API Documentaion
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  • Use Case
  • Create Polyline 2D
  • Modify Polyline 2D
  1. Annotation Tool
  2. Drawing Tools

Polyline 2D

PreviousRectangleNextPolygon 2D

Last updated 4 months ago

A Polyline 2D is an annotation tool used to draw a series of connected straight lines (segments) on a 2D image. It consists of multiple points (or nodes) that define the shape, allowing annotators to mark irregular or elongated objects with more precision.


Use Case

The polyline 2D tool is especially useful for annotating objects like road lanes, wires, edges of buildings, or boundaries that follow a path. By adjusting the points, annotators can capture the shape and position of linear or curvilinear objects within an image, providing valuable data for training computer vision models in tasks such as lane detection or object tracking.

Polyline 2D can be created only in camera sensors.


Create Polyline 2D

  1. Select Polyline 2D from the drawing tool list.

  2. The cursor pointer shows a yellow circle marker while hovering over the image.

  3. Start the polyline segment by making the first click to place the initial point. Move the mouse to the next desired location, and a line extending from the initial point will dynamically follow the cursor.

  4. User continues following the path by left clicking and creating vertices/points where needed.

  5. To end the annotation, ensure that the last vertex is created via right-click.

    • Right-click will introduce a point on the location.


Modify Polyline 2D

  • Modify the polyline 2D by selecting the node and dragging it.

  • Remove a vertex by dragging it to it's consecutive vertex.

  • Add a vertex by hovering over one segment. This segment turns yellow and a pink point appears helping the user visualize where the point will be created.

Click on the '+' icon of the class from the

Enter the .

The saved instance will appear on the with a 2D icon (RoadLanes_15 #3) next to the instance name to denote it is made in the image sensor. It shares the same ID as the instance present in the point cloud of the same object (RoadLanes_15).

annotation details
class list
class list