Labels#

class Labels[source]#

Bases: ABC

A source-agnostic, in-memory representation of labels in a scene.

This class can represent labels obtained via a LabelSource, a LabelStore, or directly from model predictions.

__init__()#

Methods

`__init__`()
`filter_by_aoi`(aoi_polygons)	Return a copy of these labels filtered by given AOI polygons.
`from_predictions`(windows, predictions)	Instantiate from windows and their corresponding predictions.
`make_empty`()	Instantiate an empty instance of this class.
`save`(uri)	Save to file.

abstract __add__(other: Labels)[source]#

Add labels to these labels.

Returns a concatenation of this and the other labels.

Parameters: other (Labels) –

abstract __setitem__(key, value)[source]#

abstract filter_by_aoi(aoi_polygons: List[Polygon]) → Labels[source]#

Return a copy of these labels filtered by given AOI polygons.

Parameters: aoi_polygons (List[Polygon]) – List of AOI polygons to filter by, in pixel coordinates.
Return type: Labels

classmethod from_predictions(windows: Iterable[Box], predictions: Iterable[Any]) → Labels[source]#

Instantiate from windows and their corresponding predictions.

This makes no assumptions about the type or format of the predictions. Subclasses should implement the __setitem__ method to correctly handle the predictions.

Parameters

windows (Iterable[Box]) – Boxes in pixel coords, specifying chips in the raster.
predictions (Iterable[Any]) – The model predictions for each chip specified by the windows.

Returns

An object of the Label subclass on which this method is called.

Return type

Labels

abstract classmethod make_empty() → Labels[source]#

Instantiate an empty instance of this class.

Returns: An object of the Label subclass on which this method is called.
Return type: Labels

abstract save(uri: str) → None[source]#

Save to file.

Parameters: uri (str) –
Return type: None