# HumanBodyActionCounter A human body action repetition counting transformer that takes window of human body poses and produces cumulative human body action repetition counts. ``` struct HumanBodyActionCounter ``` ## Topics ### Creating a transformer [`init()`](/documentation/CreateMLComponents/HumanBodyActionCounter/init()) Creates a human body action counter. ### Performing the transformation [`func applied(to: S, eventHandler: EventHandler?) async throws -> HumanBodyActionCounter.OutputSequence`](/documentation/CreateMLComponents/HumanBodyActionCounter/applied(to:eventHandler:)) Predicts cumulative human body action counts from a sequence of human body pose windows. [`struct CumulativeSumSequence`](/documentation/CreateMLComponents/HumanBodyActionCounter/CumulativeSumSequence) Cumulative human body action count sequence. ## Relationships ### Conforms To [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`TemporalTransformer`](/documentation/CreateMLComponents/TemporalTransformer) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)