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VNDetectBarcodesRequestMBS class
Super class: VNImageBasedRequestMBS
| Type | Topic | Plugin | Version | macOS | Windows | Linux | iOS | Targets |
| class | Vision | MBS MacFrameworks Plugin | 19.4 | ✅ Yes | ❌ No | ❌ No | ✅ Yes | All |
By default, a barcode request first locates all barcodes in the input image, then analyzes each to decode payload. To specify or limit the types of barcodes sought in the request, set the symbologies property to an array of barcode types you would like to support.
Subclass of the VNImageBasedRequestMBS class.
- 4 methods
- method Constructor(DelegateHandler as VNRequestCompletedMBS = nil, tag as variant = nil)
- method setSymbologies(symbologies() as String)
- method supportedSymbologies(byref error as NSErrorMBS) as String()
- method symbologies as String()
- shared method supportedSymbologies as String()
Super class VNImageBasedRequestMBS
- property regionOfInterest as CGRectMBS
- method Constructor Private
Super class VNRequestMBS
- 6 properties
- property className as String
- property ClassPath as String
- property Handle as Integer
- property preferBackgroundProcessing as Boolean
- property revision as Integer
- property usesCPUOnly as Boolean
- 4 methods
- method cancel
- method Constructor Private
- method copy as VNRequestMBS
- method results as VNObservationMBS()
- 3 shared methods
- shared method currentRevision as Integer
- shared method defaultRevision as Integer
- shared method supportedRevisions as NSIndexSetMBS
This class has no sub classes.
Some examples using this class:
- /AVFoundation/Live Barcode Detection with Vision/Live Barcode Detection with Vision
- /MacFrameworks/Vision Object Detection/Vision Object Detection
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Release notes
- Version 23.3
- Added supportedSymbologies method to VNDetectBarcodesRequestMBS class.
- Version 21.3
- Updated VNBarcodeObservationMBS and VNDetectBarcodesRequestMBS classes to support newer barcode types in macOS 12.
The items on this page are in the following plugins: MBS MacFrameworks Plugin.
VNCoreMLRequestMBS - VNDetectedObjectObservationMBS
