Instance Property

minimumSize

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

Declaration

@property(readwrite, nonatomic, assign) float minimumSize;

Discussion

The value should range from 0.0 to 1.0 inclusive. The default minimum size is 0.2.

Any smaller rectangles that Vision may have detected aren't returned.

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.

quadratureTolerance

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

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.