Face Detection with Vision from Apple Photos, Face Tagging, and Embeddings

detect-faces.swift

func detectFaces(in image: CGImage) async throws -> [VNFaceObservation] {
    try await withCheckedThrowingContinuation { continuation in
        let request = VNDetectFaceRectanglesRequest { request, error in
            if let error {
                continuation.resume(throwing: error)
                return
            }
            let faces = request.results as? [VNFaceObservation] ?? []
            continuation.resume(returning: faces)
        }
        let handler = VNImageRequestHandler(cgImage: image, options: [:])
        try handler.perform([request])
    }
}