addLabel

Add label to label definition creator object for multisignal workflow

Since R2020a

Syntax

addLabel(ldc,labelName,typeOfLabel)

addLabel(___,Name,Value)

Description

addLabel(ldc,labelName,typeOfLabel) adds a label with the specified name and type to the labelDefinitionCreatorMultisignal object ldc.

addLabel(___,Name,Value) specifies options using one or more name-value pair arguments in addition to the input arguments in the previous syntax.

Examples

Add Label Using Label Definition Creator for Multisignal Workflow

Create an empty labelDefinitionCreatorMultisignal object.

ldc = labelDefinitionCreatorMultisignal;

Add a label named 'Car'. Specify the type of label as 'Cuboid'. Adding a 'Cuboid' also adds a 'Rectangle' entry to the label definitions table.

addLabel(ldc,'Car','Cuboid');

Add another label named 'StopSign' in a group named 'TrafficSign'. Specify the type of label as a 'Rectangle'. Adding 'Rectangle' also adds a 'Cuboid' entry to the label definitions table. Add a description to the label.

addLabel(ldc,'StopSign','Rectangle','Group','TrafficSign','Description','Bounding boxes for stop signs');

Display the details of the updated labelDefinitionCreatorMultisignal object.

ldc

ldc = 
labelDefinitionCreatorMultisignal contains the following labels:

	Car with 0 sublabels and 0 attributes and belongs to None group.	(info)
	StopSign with 0 sublabels and 0 attributes and belongs to TrafficSign group.	(info)

For more details about attributes and sublabels, use the info method.

Display information about the label 'Car' using the object function info.

info(ldc,'Car')

           Name: "Car"
     SignalType: Image
      LabelType: Rectangle
          Group: "None"
     LabelColor: {''}
     Attributes: []
      Sublabels: []
    Description: ' '

           Name: "Car"
     SignalType: PointCloud
      LabelType: Cuboid
          Group: "None"
     LabelColor: {''}
     Attributes: []
      Sublabels: []
    Description: ' '

Display information about the label 'StopSign' using the object function info.

info(ldc,'StopSign')

           Name: "StopSign"
     SignalType: Image
      LabelType: Rectangle
          Group: "TrafficSign"
     LabelColor: {''}
     Attributes: []
      Sublabels: []
    Description: 'Bounding boxes for stop signs'

           Name: "StopSign"
     SignalType: PointCloud
      LabelType: Cuboid
          Group: "TrafficSign"
     LabelColor: {''}
     Attributes: []
      Sublabels: []
    Description: 'Bounding boxes for stop signs'

Input Arguments

ldc — Label definition creator for multisignal workflow

labelDefinitionCreatorMultisignal object

Label definition creator for the multisignal workflow, specified as a labelDefinitionCreatorMultisignal object.

labelName — Label name

character vector | string scalar

Label name, specified as a character vector or string scalar that uniquely identifies the label to be added.

typeOfLabel — Type of label

labelType enumeration | character vector | string scalar

Type of label, specified as one of these values:

• labelType enumeration — You can use any of these labelType enumerators to specify the type of label: Cuboid, Rectangle, Line, PixelLabel, Scene, or Custom.

  Note

  Adding a Cuboid or Rectangle also adds a Rectangle or Cuboid entry, respectively, to the label definitions table.

Example: addLabel(ldc,'Car',labelType.Cuboid);

• Character vector or string scalar — This value must partially or fully match one of the labelType enumerators.

Example: addLabel(ldc,'Car','Cub');

Name-Value Arguments

Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

Example: addLabel(ldc,'StopSign','Rectangle','Group','TrafficSign','Description','Bounding boxes for stop signs');

Group — Group name

'None' (default) | character vector | string scalar

Group name, specified as a comma-separated pair consisting of 'Group' and a character vector or string scalar. Use this name-value pair to specify a name for a group of labels.

Description — Label description

' ' (default) | character vector | string scalar

Label description, specified as a comma-separated pair consisting of 'Description' and a character vector or string scalar. Use this name-value pair to describe the label.

Version History

Introduced in R2020a