Classification¶

class ClassificationPrediction(confidence, label)¶

A single prediction from Classification.

Parameters

confidence (float) – The confidence of this prediction.
label (str) – The label describing this prediction result.

property label: str¶

The label describing this prediction result.

Return type: str

property confidence: float¶

The confidence of this prediction.

Return type: float

class ClassificationResults(predictions, duration, image)¶

All the results of classification from Classification.

Predictions are stored in sorted order, with descending order of confidence.

Parameters

predictions (List[ClassificationPrediction]) – The list of predictions ordered by confidence descending.
duration (float) – The duration of the inference.
image (ndarray) – The image that the inference was performed on.

property duration: float¶

The duration of the inference in seconds.

Return type: float

property predictions: List[ClassificationPrediction]¶

The list of predictions.

Return type: List[ClassificationPrediction]

property image: ndarray¶

The image the results were processed on.

Return type: ndarray

class Classification(model_id, model_config=None)¶

Identify the most prominent object in an image.

Typical usage:

classifier = edgeiq.Classification('alwaysai/googlenet')
classifier.load(engine=edgeiq.Engine.DNN)

<get image>
results = classifier.classify_image(image)
for prediction in results.predictions:
    print('Label: {}, confidence: {}'.format(
        prediction.label, prediction.confidence))

Parameters: model_id (str) – The ID of the model you want to use for image classification.

classify_image(image, confidence_level=0.3)¶

Identify the most prominent object in the specified image.

Parameters

image (ndarray) – The image to analyze.
confidence_level (float) – The minimum confidence level required to successfully accept a classification. Expected range: [0.0, 1.0].

Return type

ClassificationResults

property accelerator: Optional[Accelerator]¶

The accelerator being used.

Return type: Optional[Accelerator]

property colors: Optional[ndarray]¶

The auto-generated colors for the loaded model.

Note: Initialized to None when the model doesn’t have any labels. Note: To update, the new colors list must be same length as the label list.

Return type: Optional[ndarray]

property engine: Optional[Engine]¶

The engine being used.

Return type: Optional[Engine]

property labels: Optional[List[str]]¶

The labels for the loaded model.

Note: Initialized to None when the model doesn’t have any labels.

Return type: Optional[List[str]]

load(engine=Engine.DNN, accelerator=Accelerator.DEFAULT)¶

Load the model to an engine and accelerator.

Parameters

engine (Engine) – The engine to load the model to
accelerator (Accelerator) – The accelerator to load the model to

property model_config: ModelConfig¶

The configuration of the model that was loaded

Return type: ModelConfig

property model_id: str¶

The ID of the loaded model.

Return type: str

property model_purpose: SupportedPurposes¶

The purpose of the model being used.

Return type: SupportedPurposes

publish_analytics(results, tag=None, **kwargs)¶

Publish results to the alwaysAI Analytics Service

Example usage:

try:
    inference.publish_analytics(results, tag='custom_tag')
except edgeiq.PublishError as e:
    # Retry publish
except edgeiq.ConnectionError as e:
    # Save state and exit app to reconnect

Parameters

results (TypeVar(ResultsT)) – The results to publish.
tag (Optional[Any]) – Additional information to assist in querying and visualizations.

Raises

ConnectionBlockedError when using connection to the alwaysAI Device Agent and resources are at capacity,

Raises

PacketRateError when publish rate exceeds current limit,

Raises

PacketSizeError when packet size exceeds current limit. Packet publish size and rate limits will be provided in the error message.