Vision · IOS API REFERENCE

DetectBarcodesRequest

struct · iOS 18.0+ · SDK 27.1

struct DetectBarcodesRequest

A request that detects barcodes in an image. This request returns an array of BarcodeObservation objects, one for each barcode it detects.

Members (12)

get · iOS 18.0+

descriptor

TypeScript

get descriptor(): RequestDescriptor

Swift declaration

var descriptor: RequestDescriptor { get }

An enum that identifies the request and request revision.

get · iOS 18.0+

symbologies

TypeScript

get symbologies(): Array<BarcodeSymbology>

Swift declaration

var symbologies: [BarcodeSymbology]

The collection of specific barcode symbologies to be detected. By default all symbologies will be detected.

set · iOS 18.0+

symbologies

TypeScript

set symbologies(value: Array<BarcodeSymbology>)

Swift declaration

var symbologies: [BarcodeSymbology]

The collection of specific barcode symbologies to be detected. By default all symbologies will be detected.

get · iOS 18.0+

regionOfInterest

TypeScript

get regionOfInterest(): NormalizedRect

Swift declaration

var regionOfInterest: NormalizedRect

The region of the image in which Vision will perform the request. The rectangle is normalized to the dimensions of the processed image. Its origin is specified relative to the image's lower-left corner. By default, the region of interest will be the full image.

set · iOS 18.0+

regionOfInterest

TypeScript

set regionOfInterest(value: NormalizedRect)

Swift declaration

var regionOfInterest: NormalizedRect

method · iOS 18.0+

setComputeDevice

TypeScript

setComputeDevice(computeDevice: (_CoreML_MLComputeDevice) | null, computeStage: ComputeStage): void

Swift declaration

mutating func setComputeDevice(_ computeDevice: MLComputeDevice?, for computeStage: ComputeStage)

Assigns a compute device for a compute stage. If the parameter `computeDevice` is `nil`, the framework removes any explicit compute device assignment and allows the framework to select the device. Configure any compute device for a given compute stage. When performing a request, the system makes a validity check. Use `supportedComputeStageDevices` to get valid compute devices for a request’s compute stages. - Parameters: - `computeDevice: `The compute device to assign to the compute stage. - `computeStage: `The compute stage.

get · iOS 18.0+

supportedRevisions

TypeScript

static get supportedRevisions(): Array<DetectBarcodesRequest_Revision>

Swift declaration

static let supportedRevisions: [DetectBarcodesRequest.Revision]

The collection of currently-supported revisions for `DetectBarcodesRequest`.

get · iOS 18.0+

supportedSymbologies

TypeScript

get supportedSymbologies(): Array<BarcodeSymbology>

Swift declaration

var supportedSymbologies: [BarcodeSymbology] { get }

The collection of barcode symbologies that can be recognized by the request.

get · iOS 18.0+

coalescesCompositeSymbologies

TypeScript

get coalescesCompositeSymbologies(): boolean

Swift declaration

var coalescesCompositeSymbologies: Bool

Allow multiple codes to be coalesced into one. The default value for this property is `false`.

set · iOS 18.0+

coalescesCompositeSymbologies

TypeScript

set coalescesCompositeSymbologies(value: boolean)

Swift declaration

var coalescesCompositeSymbologies: Bool

Allow multiple codes to be coalesced into one. The default value for this property is `false`.

get · iOS 18.0+

revision

TypeScript

get revision(): DetectBarcodesRequest_Revision

Swift declaration

let revision: DetectBarcodesRequest.Revision

The request's configured revision.

init · iOS 18.0+

init

TypeScript

static init(revision?: (DetectBarcodesRequest_Revision) | null): DetectBarcodesRequest

Swift declaration

init(_ revision: DetectBarcodesRequest.Revision? = nil)

- Parameters: - revision: The specific algorithm or implementation revision that's used to perform the request.

Skipped declarations

No declarations were skipped in this snapshot.

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