Range Based Sensor Simulation [omni.isaac.range_sensor]

This extension provides a set simulated range based sensors like lidar, ultrasonic, generic and interfaces to access them in the simulator.

Lidar Sensor

This submodule provides an interface to a simulated lidar sensor. A simplified command is provided to create a lidar sensor in the stage:

commands.RangeSensorCreateLidar(parent=None, min_range: float = 0.4, max_range: float = 100.0, draw_points: bool = False, draw_lines: bool = False, horizontal_fov: float = 360.0, vertical_fov: float = 30.0, horizontal_resolution: float = 0.4, vertical_resolution: float = 4.0, rotation_rate: float = 20.0, high_lod: bool = False, yaw_offset: float = 0.0, enable_semantics: bool = False)

Commands class to create a lidar sensor.

Typical usage example:

result, prim = omni.kit.commands.execute(
    "RangeSensorCreateLidar",
    path="/Lidar",
    parent=None,
    min_range=0.4,
    max_range=100.0,
    draw_points=False,
    draw_lines=False,
    horizontal_fov=360.0,
    vertical_fov=30.0,
    horizontal_resolution=0.4,
    vertical_resolution=4.0,
    rotation_rate=20.0,
    high_lod=False,
    yaw_offset=0.0,
    enable_semantics=False,
)

Once a lidar sensor is in the stage you can use this interface to interact with the simulated lidar data. You must first call the acquire interface function. It is also recommended to use the is_lidar_sensor function to check if a lidar sensor exists at the given USD path

from omni.isaac.range_sensor._range_sensor import acquire_lidar_sensor_interface
lidar_sensor_interface = acquire_lidar_sensor_interface()
if lidar_sensor_interface.is_lidar_sensor("/World/Lidar"):
    print("lidar sensor is valid")

_range_sensor.acquire_lidar_sensor_interface(plugin_name: str = None, library_path: str = None) → omni::isaac::range_sensor::LidarSensorInterface

_range_sensor.release_lidar_sensor_interface(arg0: omni::isaac::range_sensor::LidarSensorInterface) → None

class LidarSensorInterface

get_azimuth_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The azimuth angle in radians for each column

Return type

numpy.ndarray

get_depth_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The distance from the sensor to the hit for each beam in uint16 and scaled by min and max distance

Return type

numpy.ndarray

get_intensity_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The observed specular intensity of each beam, 255 if hit, 0 if not

Return type

numpy.ndarray

get_linear_depth_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The distance from the sensor to the hit for each beam in meters

Return type

numpy.ndarray

get_num_cols(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of vertical scans of the sensor, 0 if error occurred

Return type

int

get_num_cols_ticked(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of vertical scans the sensor completed in the last simulation step, 0 if error occurred. Generally only useful for lidars with a non-zero rotation speed

Return type

int

get_num_rows(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of horizontal scans of the sensor, 0 if error occurred

Return type

int

get_point_cloud_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The hit position in xyz relative to the sensor origin, not accounting for individual ray offsets

Return type

numpy.ndarray

get_semantic_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The semantic id of the hit for each beam in uint16

Return type

numpy.ndarray

get_zenith_data(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The zenith angle in radians for each row

Return type

numpy.ndarray

is_lidar_sensor(self: omni.isaac.range_sensor._range_sensor.LidarSensorInterface, arg0: str) → bool

Parameters

arg0 (str) – USD path to sensor as a string

Returns

True if a sensor exists at the give path, False otherwise

Return type

bool

Ultrasonic Sensor

This submodule provides an interface to a simulated ultrasonic sensor.

commands.RangeSensorCreateUltrasonicArray(parent=None, min_range: float = 0.4, max_range: float = 100.0, draw_points: bool = False, draw_lines: bool = False, horizontal_fov: float = 360.0, vertical_fov: float = 30.0, rotation_rate: float = 20.0, horizontal_resolution: float = 0.4, vertical_resolution: float = 4.0, num_bins: int = 224, use_brdf: bool = False, use_uss_materials: bool = False, emitter_prims: ] = [], firing_group_prims: ] = [])

Commands class to create an ultrasonic array.

Typical usage example:

result, prim = omni.kit.commands.execute(
    "RangeSensorCreateUltrasonicArray",
    path="/UltrasonicArray",
    parent=None,
    min_range=0.4,
    max_range=3.0,
    draw_points=False,
    draw_lines=False,
    horizontal_fov=15.0,
    vertical_fov=10.0,
    horizontal_resolution=0.5,
    vertical_resolution=0.5,
    num_bins=224,
    use_brdf: bool = False,
    use_uss_materials: bool = False,
    emitter_prims=[],
    firing_group_prims=[],
)

commands.RangeSensorCreateUltrasonicEmitter(parent=None, per_ray_intensity: float = 1.0, yaw_offset: float = 0.0, adjacency_list: ] = [])

Commands class to create an ultrasonic emitter.

Typical usage example:

result, prim = omni.kit.commands.execute(
    "RangeSensorCreateUltrasonicEmitter",
    path="/UltrasonicEmitter",
    parent=None,
    per_ray_intensity=1.0,
    yaw_offset=0.0,
    adjacency_list=[],
)

commands.RangeSensorCreateUltrasonicFiringGroup(parent=None, emitter_modes: ] = [], receiver_modes: ] = [])

Commands class to create an ultrasonic firing group.

Typical usage example:

result, prim = omni.kit.commands.execute(
    "RangeSensorCreateUltrasonicFiringGroup",
    path="/UltrasonicFiringGroup",
    parent=None,
    emitter_modes=[],
    receiver_modes=[],
)

Example

To use this interface, you must first call the acquire interface function. It is also recommended to use the is_ultrasonic_sensor function to check if a ultrasonic sensor exists at the given USD path

from omni.isaac.range_sensor._range_sensor import acquire_ultrasonic_sensor_interface
ultrasonic_sensor_interface = acquire_ultrasonic_sensor_interface()
if ultrasonic_sensor_interface.is_ultrasonic_sensor("/World/UltrasonicArray"):
    print("ultrasonic sensor is valid")

_range_sensor.acquire_ultrasonic_sensor_interface(plugin_name: str = None, library_path: str = None) → omni::isaac::range_sensor::UltrasonicSensorInterface

_range_sensor.release_ultrasonic_sensor_interface(arg0: omni::isaac::range_sensor::UltrasonicSensorInterface) → None

class UltrasonicSensorInterface

get_active_envelope_array(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → List[List[float]]

get_azimuth_data(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The azimuth angle in radians for each column

Return type

numpy.ndarray

get_depth_data(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str, arg1: int) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The distance from the sensor to the hit for each beam in uint16 and scaled by min and max distance

Return type

numpy.ndarray

get_emitter_firing_info(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → List[carb._carb.Int2]

Parameters

arg0 (str) – USD path to sensor as a string

Returns

emitter firing info for the current group fired

Return type

list

get_envelope(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str, arg1: int) → object

Parameters

• arg0 (str) – USD path to sensor as a string

• arg1 (int) – array index of the emitter that we are querying

Returns

The binned timestamps of returns from sensor emission

Return type

numpy.ndarray

get_envelope_array(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The array of envelopes from the ultrasonic sensor

Return type

numpy.ndarray

get_intensity_data(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str, arg1: int) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The observed specular intensity of each beam, 255 if hit, 0 if not

Return type

numpy.ndarray

get_linear_depth_data(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str, arg1: int) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The distance from the sensor to the hit for each beam in meters

Return type

numpy.ndarray

get_num_cols(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of horizontal scans of the sensor, 0 if error occurred

Return type

int

get_num_emitters(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of emitters on the sensor array, 0 if error occurred

Return type

int

get_num_rows(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of horizontal scans of the sensor, 0 if error occurred

Return type

int

get_receiver_firing_info(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → List[carb._carb.Int2]

Parameters

arg0 (str) – USD path to sensor as a string

Returns

receiver info for the current group fired

Return type

list

get_zenith_data(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The zenith angle in radians for each row

Return type

numpy.ndarray

is_ultrasonic_sensor(self: omni.isaac.range_sensor._range_sensor.UltrasonicSensorInterface, arg0: str) → bool

Parameters

arg0 (str) – USD path to sensor as a string

Returns

True if a sensor exists at the give path, False otherwise

Return type

bool

Generic Sensor

This submodule provides an interface to a simulated generic sensor.

commands.RangeSensorCreateGeneric(parent=None, min_range: float = 0.4, max_range: float = 100.0, draw_points: bool = False, draw_lines: bool = False, sampling_rate: int = 60)

Commands class to create a generic range sensor.

Typical usage example:

result, prim = omni.kit.commands.execute(
    "RangeSensorCreateGeneric",
    path="/GenericSensor",
    parent=None,
    min_range=0.4,
    max_range=100.0,
    draw_points=False,
    draw_lines=False,
    sampling_rate=60,
)

Example

To use this interface, you must first call the acquire interface function. It is also recommended to use the is_generic_sensor function to check if a generic sensor exists at the given USD path

from omni.isaac.range_sensor._range_sensor import acquire_generic_sensor_interface
generic_sensor_interface = acquire_generic_sensor_interface()
if generic_sensor_interface.is_generic_sensor("/World/GenericSensor"):
    print("generic sensor is valid")

_range_sensor.acquire_generic_sensor_interface(plugin_name: str = None, library_path: str = None) → omni::isaac::range_sensor::GenericSensorInterface

_range_sensor.release_generic_sensor_interface(arg0: omni::isaac::range_sensor::GenericSensorInterface) → None

class GenericSensorInterface

get_azimuth_data(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The azimuth angle in radians for each column

Return type

numpy.ndarray

get_depth_data(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The distance from the sensor to the hit for each beam in uint16 and scaled by min and max distance

Return type

numpy.ndarray

get_hit_pos_data(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The hit position in xyz relative to the sensor origin, not accounting for individual ray offsets

Return type

numpy.ndarray

get_intensity_data(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The observed specular intensity of each beam, 255 if hit, 0 if not

Return type

numpy.ndarray

get_linear_depth_data(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The distance from the sensor to the hit for each beam in meters

Return type

numpy.ndarray

get_num_samples_ticked(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → int

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The number of sample points the sensor completed in the last simulation step, 0 if error occurred.

Return type

int

get_zenith_data(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → object

Parameters

arg0 (str) – USD path to sensor as a string

Returns

The zenith angle in radians for each row

Return type

numpy.ndarray

is_generic_sensor(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → bool

Parameters

arg0 (str) – USD path to sensor as a string

Returns

True if a sensor exists at the give path, False otherwise

Return type

bool

send_next_batch(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str) → bool

ready for next batch

set_next_batch_offsets(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str, arg1: numpy.ndarray[float32]) → None

Parameters

• arg0 (str) – USD path to sensor as a string

• arg1 (numpy.ndaray) – The offset xyz, a 2D array for individual rays, or 1D array for a constant offset

set_next_batch_rays(self: omni.isaac.range_sensor._range_sensor.GenericSensorInterface, arg0: str, arg1: numpy.ndarray[float32]) → None

Parameters

• arg0 (str) – USD path to sensor as a string

• arg1 (numpy.ndaray) – The azimuth and zenith angles in radians for each column

Generated USD Schema API

The following USD Schema API was automatically generated, it is provided here as a reference

class Generic

Bases: omni.isaac.RangeSensorSchema.RangeSensor

CreateSamplingRateAttr()

static Define()

static Get()

GetSamplingRateAttr()

static GetSchemaAttributeNames()

class Lidar

Bases: omni.isaac.RangeSensorSchema.RangeSensor

CreateEnableSemanticsAttr()

CreateHighLodAttr()

CreateHorizontalFovAttr()

CreateHorizontalResolutionAttr()

CreateRotationRateAttr()

CreateVerticalFovAttr()

CreateVerticalResolutionAttr()

CreateYawOffsetAttr()

static Define()

static Get()

GetEnableSemanticsAttr()

GetHighLodAttr()

GetHorizontalFovAttr()

GetHorizontalResolutionAttr()

GetRotationRateAttr()

static GetSchemaAttributeNames()

GetVerticalFovAttr()

GetVerticalResolutionAttr()

GetYawOffsetAttr()

class RangeSensor

Bases: pxr.UsdGeom.Xformable

CreateDrawLinesAttr()

CreateDrawPointsAttr()

CreateEnabledAttr()

CreateMaxRangeAttr()

CreateMinRangeAttr()

static Get()

GetDrawLinesAttr()

GetDrawPointsAttr()

GetEnabledAttr()

GetMaxRangeAttr()

GetMinRangeAttr()

static GetSchemaAttributeNames()

class UltrasonicArray

Bases: omni.isaac.RangeSensorSchema.RangeSensor

CreateAttenuationAlphaAttr()

CreateEmitterPrimsRel()

CreateFiringGroupsRel()

CreateHorizontalFovAttr()

CreateHorizontalResolutionAttr()

CreateNumBinsAttr()

CreateUseBRDFAttr()

CreateUseDistAttenuationAttr()

CreateUseUSSMaterialsForBRDFAttr()

CreateVerticalFovAttr()

CreateVerticalResolutionAttr()

static Define()

static Get()

GetAttenuationAlphaAttr()

GetEmitterPrimsRel()

GetFiringGroupsRel()

GetHorizontalFovAttr()

GetHorizontalResolutionAttr()

GetNumBinsAttr()

static GetSchemaAttributeNames()

GetUseBRDFAttr()

GetUseDistAttenuationAttr()

GetUseUSSMaterialsForBRDFAttr()

GetVerticalFovAttr()

GetVerticalResolutionAttr()

class UltrasonicEmitter

Bases: pxr.UsdGeom.Xformable

CreateAdjacencyListAttr()

CreatePerRayIntensityAttr()

CreateYawOffsetAttr()

static Define()

static Get()

GetAdjacencyListAttr()

GetPerRayIntensityAttr()

static GetSchemaAttributeNames()

GetYawOffsetAttr()

class UltrasonicFiringGroup

Bases: pxr.Usd.Typed

CreateEmitterModesAttr()

CreateReceiverModesAttr()

static Define()

static Get()

GetEmitterModesAttr()

GetReceiverModesAttr()

static GetSchemaAttributeNames()

class UltrasonicMaterialAPI

Bases: pxr.Usd.APISchemaBase

static Apply()

CreateBase_colorAttr()

CreateMetallicAttr()

CreatePerceptualRoughnessAttr()

CreateReflectanceAttr()

static Get()

GetBase_colorAttr()

GetMetallicAttr()

GetPerceptualRoughnessAttr()

GetReflectanceAttr()

static GetSchemaAttributeNames()