VNSequenceRequestHandler.Perform Method

Reference

Definition

Namespace:: Vision

Assembly:: Xamarin.iOS.dll

Assembly:: Xamarin.Mac.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

通过

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

其他资源