estimatedScaleFactor
A factor between the initial size and the estimated physical size.
Declaration
var estimatedScaleFactor: CGFloat { get }Discussion
The default value is 1.0, which means that a version of this image that ARKit recognizes in the physical environment exactly matches its reference image physicalSize.
Otherwise, ARKit automatically corrects the image anchor’s transform when estimatedScaleFactor is a value other than 1.0. This adjustment in turn, corrects ARKit’s understanding of where the image anchor is located in the physical environment.