Class

VNImageAlignmentObservation

The abstract superclass for image analysis results that describe the relative alignment of two images.

Declaration

@interface VNImageAlignmentObservation : VNObservation

Overview

This abstract superclass forms the basis of image alignment or registration output. You receive its subclasses, such as VNImageTranslationAlignmentObservation and VNImageHomographicAlignmentObservation, by performing specific registration requests. Don’t create one of these classes yourself.

Relationships

Inherits From

See Also

Image Alignment

VNTargetedImageRequest

The abstract superclass for image analysis requests that operate on both the processed image and a secondary image.

VNImageRegistrationRequest

The abstract superclass for image analysis requests that align images based on their content.

VNTranslationalImageRegistrationRequest

An image analysis request that determines the affine transform needed to align the content of two images.

VNImageTranslationAlignmentObservation

Affine transform information produced by an image alignment request.

VNHomographicImageRegistrationRequest

An image analysis request that determines the perspective warp matrix needed to align the content of two images.

VNImageHomographicAlignmentObservation

Perspective warp information produced by an image alignment request.