# SoftBank Robotics documentation What's new in NAOqi 2.8?

# Extractors

NAOqi Core - Overview | ALExtractor API | ALVisionExtractor API

## What it does

Extractor modules are used as a base class for vision and perception modules.

## List of modules inheriting from ALExtractor

- ALEngagementZones
- ALFaceDetection
- ALGazeAnalysis
- ALLandMarkDetection
- ALPeoplePerception
- ALRedBallDetection
- ALSittingPeopleDetection
- ALSonar
- ALVisualSpaceHistory
- ALWavingDetection
- ALVisionRecognition

## List of modules inheriting from ALExtractor and ALVisionExtractor

- ALBacklightingDetection
- ALBarcodeReader
- ALDarknessDetection
- ALMovementDetection
- ALVisualCompass

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