VNSequenceRequestHandler.Perform Method

Reference

Definition

Namespace:: Vision

Assembly:: Xamarin.iOS.dll

Assembly:: Xamarin.Mac.dll

Important

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Overloads

Perform(VNRequest[], CGImage, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `image`.
Perform(VNRequest[], CIImage, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `image`.
Perform(VNRequest[], CVPixelBuffer, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `pixelBuffer`.
Perform(VNRequest[], NSData, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `imageData`.
Perform(VNRequest[], NSUrl, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the image at `imageUrl`.
Perform(VNRequest[], CGImage, CGImagePropertyOrientation, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `image`.
Perform(VNRequest[], CIImage, CGImagePropertyOrientation, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `image`.
Perform(VNRequest[], CVPixelBuffer, CGImagePropertyOrientation, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `pixelBuffer`.
Perform(VNRequest[], NSData, CGImagePropertyOrientation, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the `imageData`.
Perform(VNRequest[], NSUrl, CGImagePropertyOrientation, NSError)	Asynchronously executes the vision recognition tasks in `requests` to the image located at `imageUrl`.

Perform(VNRequest[], CGImage, NSError)

Asynchronously executes the vision recognition tasks in requests to the image.

[Foundation.Export("performRequests:onCGImage:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, CoreGraphics.CGImage image, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * CoreGraphics.CGImage *  -> bool
override this.Perform : Vision.VNRequest[] * CoreGraphics.CGImage *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

image: CGImage

The image on which to perform detection.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], CIImage, NSError)

Asynchronously executes the vision recognition tasks in requests to the image.

[Foundation.Export("performRequests:onCIImage:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, CoreImage.CIImage image, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * CoreImage.CIImage *  -> bool
override this.Perform : Vision.VNRequest[] * CoreImage.CIImage *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

image: CIImage

The image on which to perform detection.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], CVPixelBuffer, NSError)

Asynchronously executes the vision recognition tasks in requests to the pixelBuffer.

[Foundation.Export("performRequests:onCVPixelBuffer:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, CoreVideo.CVPixelBuffer pixelBuffer, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * CoreVideo.CVPixelBuffer *  -> bool
override this.Perform : Vision.VNRequest[] * CoreVideo.CVPixelBuffer *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

pixelBuffer: CVPixelBuffer

The image on which to perform detection.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], NSData, NSError)

Asynchronously executes the vision recognition tasks in requests to the imageData.

[Foundation.Export("performRequests:onImageData:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, Foundation.NSData imageData, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * Foundation.NSData *  -> bool
override this.Perform : Vision.VNRequest[] * Foundation.NSData *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

imageData: NSData

The image data on which to perform detection.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], NSUrl, NSError)

Asynchronously executes the vision recognition tasks in requests to the image at imageUrl.

[Foundation.Export("performRequests:onImageURL:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, Foundation.NSUrl imageUrl, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * Foundation.NSUrl *  -> bool
override this.Perform : Vision.VNRequest[] * Foundation.NSUrl *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

imageUrl: NSUrl

The image on which to perform detection.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], CGImage, CGImagePropertyOrientation, NSError)

Asynchronously executes the vision recognition tasks in requests to the image.

[Foundation.Export("performRequests:onCGImage:orientation:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, CoreGraphics.CGImage image, ImageIO.CGImagePropertyOrientation orientation, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * CoreGraphics.CGImage * ImageIO.CGImagePropertyOrientation *  -> bool
override this.Perform : Vision.VNRequest[] * CoreGraphics.CGImage * ImageIO.CGImagePropertyOrientation *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

image: CGImage

The image on which to perform detection.

orientation: CGImagePropertyOrientation

The objects orientation.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], CIImage, CGImagePropertyOrientation, NSError)

Asynchronously executes the vision recognition tasks in requests to the image.

[Foundation.Export("performRequests:onCIImage:orientation:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, CoreImage.CIImage image, ImageIO.CGImagePropertyOrientation orientation, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * CoreImage.CIImage * ImageIO.CGImagePropertyOrientation *  -> bool
override this.Perform : Vision.VNRequest[] * CoreImage.CIImage * ImageIO.CGImagePropertyOrientation *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

image: CIImage

The image on which to perform detection.

orientation: CGImagePropertyOrientation

The objects orientation.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], CVPixelBuffer, CGImagePropertyOrientation, NSError)

Asynchronously executes the vision recognition tasks in requests to the pixelBuffer.

[Foundation.Export("performRequests:onCVPixelBuffer:orientation:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, CoreVideo.CVPixelBuffer pixelBuffer, ImageIO.CGImagePropertyOrientation orientation, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * CoreVideo.CVPixelBuffer * ImageIO.CGImagePropertyOrientation *  -> bool
override this.Perform : Vision.VNRequest[] * CoreVideo.CVPixelBuffer * ImageIO.CGImagePropertyOrientation *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

pixelBuffer: CVPixelBuffer

The image on which to perform detection.

orientation: CGImagePropertyOrientation

The objects orientation.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], NSData, CGImagePropertyOrientation, NSError)

Asynchronously executes the vision recognition tasks in requests to the imageData.

[Foundation.Export("performRequests:onImageData:orientation:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, Foundation.NSData imageData, ImageIO.CGImagePropertyOrientation orientation, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * Foundation.NSData * ImageIO.CGImagePropertyOrientation *  -> bool
override this.Perform : Vision.VNRequest[] * Foundation.NSData * ImageIO.CGImagePropertyOrientation *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

imageData: NSData

The image on which to perform detection.

orientation: CGImagePropertyOrientation

The objects orientation.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Perform(VNRequest[], NSUrl, CGImagePropertyOrientation, NSError)

Asynchronously executes the vision recognition tasks in requests to the image located at imageUrl.

[Foundation.Export("performRequests:onImageURL:orientation:error:")]
public virtual bool Perform (Vision.VNRequest[] requests, Foundation.NSUrl imageUrl, ImageIO.CGImagePropertyOrientation orientation, out Foundation.NSError error);

abstract member Perform : Vision.VNRequest[] * Foundation.NSUrl * ImageIO.CGImagePropertyOrientation *  -> bool
override this.Perform : Vision.VNRequest[] * Foundation.NSUrl * ImageIO.CGImagePropertyOrientation *  -> bool

Parameters

requests: VNRequest[]

The array of VNRequest objects to be detected.

imageUrl: NSUrl

The image on which to perform detection.

orientation: CGImagePropertyOrientation

The image's orientation.

error: NSError

If not null after processing, a problem that occurred during processing.

Returns

Boolean

Attributes: ExportAttribute

Applies to

Share via

VNSequenceRequestHandler.Perform Method

Definition

Overloads

Perform(VNRequest[], CGImage, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], CIImage, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], CVPixelBuffer, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], NSData, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], NSUrl, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], CGImage, CGImagePropertyOrientation, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], CIImage, CGImagePropertyOrientation, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], CVPixelBuffer, CGImagePropertyOrientation, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], NSData, CGImagePropertyOrientation, NSError)

Parameters

Returns

Applies to

Perform(VNRequest[], NSUrl, CGImagePropertyOrientation, NSError)

Parameters

Returns

Applies to

Additional resources