Instance Property

quadratureTolerance

A float specifying the number of degrees a rectangle corner angle can deviate from 90°.

Declaration

@property(readwrite, nonatomic, assign) VNDegrees quadratureTolerance;

Discussion

The tolerance value should range from 0 to 45, inclusive. The default tolerance is 30.

See Also

Configuring Rectangle Detection

minimumAspectRatio

A float specifying the minimum aspect ratio of the rectangle to detect, defined as the shorter dimension over the longer dimension.

maximumAspectRatio

A float specifying the maximum aspect ratio of the rectangle to detect, defined as the shorter dimension over the longer dimension.

minimumSize

A float specifying the minimum size of the rectangle to be detected, as a proportion of the smallest dimension.

minimumConfidence

A value specifying the minimum acceptable confidence level.

maximumObservations

An integer specifying the maximum number of rectangles Vision returns.

VNAspectRatio

A type alias for expressing rectangle aspect ratios in Vision.

VNConfidence

A type alias for the confidence value of an observation.

VNDegrees

A typealias for expressing tolerance angles in Vision.