The abstract superclass for image analysis requests that focus on a specific part of an image.
SDKs
Framework
class VNImageBasedRequest : VNRequest
Other Vision request handlers that operate on still images inherit from this abstract base class. Don’t use it directly.
var regionThe region of the image in which Vision will perform the request.
Locate and demarcate rectangles, faces, barcodes, and text in images using the Vision framework.
Analyze and label images using a Vision classification request.
Generate a feature print to compute distance between images.
class VNImageAn object that processes one or more image analysis requests pertaining to a single image.
class VNClassifyA request to classify an image.
class VNFeatureThe observation resulting from a VNGenerate.
class VNGenerateAn image-based request to generate feature prints from an image.
class VNRequestThe abstract superclass for analysis requests.
class VNObservationThe abstract superclass for analysis results.