boofcv.alg.shapes.polyline

Class RefinePolyLineCorner

java.lang.Object

boofcv.alg.shapes.polyline.RefinePolyLineCorner

public class RefinePolyLineCorner
extends java.lang.Object

Optimizing corner placements to a pixel level when given a contour and integer list of approximate corner locations which define set of line segments. Corners are optimized by searching for another near by pixel in the provided contour which reduces the distance of the contour from the line segments. This is intended to optimize the output from SplitMergeLineFit. Can be configured to handle case where line segments form a loop or have disconnected end points.

Each corner is individually optimized once per iteration. The process is repeated until the maximum number of iterations has been reached or there is no change in corner placements.

Constructor Summary

Constructors

Constructor and Description
RefinePolyLineCorner(boolean looping) Constructor using default parameters
RefinePolyLineCorner(boolean looping, int maxIterations) Constructor with configurable parameters

Method Summary

Modifier and Type	Method and Description
boolean	fit(java.util.List<Point2D_I32> contour, GrowQueue_I32 corners) Fits a polygon to the contour given an initial set of candidate corners.

Methods inherited from class java.lang.Object

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

Constructor Detail

RefinePolyLineCorner

public RefinePolyLineCorner(boolean looping,
                            int maxIterations)

Constructor with configurable parameters

Parameters:

looping - true if it loops or false if not

maxIterations - Number of internal EM iterations

RefinePolyLineCorner

public RefinePolyLineCorner(boolean looping)

Constructor using default parameters

Method Detail

fit

public boolean fit(java.util.List<Point2D_I32> contour,
                   GrowQueue_I32 corners)

Fits a polygon to the contour given an initial set of candidate corners. If not looping the corners must include the end points still. Minimum of 3 points required. Otherwise there's no corner!.

Parameters:

contour - Contours around the shape

corners - (Input) initial set of corners. (output) refined set of corners