Package boofcv.alg.filter.binary

Class ContourTracer

java.lang.Object

boofcv.alg.filter.binary.ContourTracer

public class ContourTracer
extends Object

Used to trace the external and internal contours around objects for LinearContourLabelChang2004. As it is tracing an object it will modify the binary image by labeling. The input binary image is assumed to have a 1-pixel border that needs to be compensated for.

Constructor Summary

Constructors

Constructor	Description
ContourTracer(ConnectRule rule)	Specifies connectivity rule

Method Summary

Modifier and Type	Method	Description
ConnectRule	getConnectRule()
void	setInputs(GrayU8 binary, GrayS32 labeled, PackedSetsPoint2D_I32 storagePoints)	Specifies the input images.
void	setMaxContourSize(int maxContourSize)
void	trace(int label, int initialX, int initialY, boolean external)	Traces the contour starting at the specified seed.

Methods inherited from class java.lang.Object

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

Constructor Details

ContourTracer

public ContourTracer(ConnectRule rule)

Specifies connectivity rule

Parameters:

rule - Specifies 4 or 8 as connectivity rule

Method Details

setInputs

public void setInputs(GrayU8 binary,
 GrayS32 labeled,
 PackedSetsPoint2D_I32 storagePoints)

Specifies the input images.

Parameters:

binary - Binary image with a border of zeros added to the outside.

labeled - Labeled image. Size is the same as the original binary image without border.

trace

public void trace(int label,
 int initialX,
 int initialY,
 boolean external)

Traces the contour starting at the specified seed.

Parameters:

external - True for tracing an external contour or false for internal.

setMaxContourSize

public void setMaxContourSize(int maxContourSize)

getConnectRule

public ConnectRule getConnectRule()