Package org.anchoranalysis.mpp.mark.points

Class RotatableBoundingBoxFactory

Object

RotatableBoundingBoxFactory

public class RotatableBoundingBoxFactory
extends Object

Creates instances of RotatableBoundingBox.

Author:

Owen Feehan

Method Summary

Modifier and Type	Method	Description
static RotatableBoundingBox	create(IntToFloatFunction extractElement, Point2i anchorPoint)	Builds a bounding-box from the 5-element floating-point vector returned from the EAST algorithm.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

create

public static RotatableBoundingBox create(IntToFloatFunction extractElement,
 Point2i anchorPoint)

Builds a bounding-box from the 5-element floating-point vector returned from the EAST algorithm.

The bounding-boxes are encoded in RBOX format, see the original EAST paper Zhou et al. 2017.

A C++ example of calling EAST via OpenCV can be found on GitHub.

The vector is ordered as follows:

• Position 0: distance to top-boundary of box (y-min).
• Position 1: distance to right-boundary of box (x-max).
• Position 2: distance to bottom-boundary of box (y-max).
• Position 3: distance to left-boundary of box (x-min).
• Position 4: clockwise angle to rotate around the offset.

Parameters:

extractElement - extracts an element from the vector, corresponding to indices 0-5 inclusive.

anchorPoint - the anchor point for the object, about which rotation occurs, and the corners of the bounding box are expressed relative to.

Returns:

a mark encapsulating a rotatable bounding-box.