boofcv.alg.filter.binary

Class ContourTracer

java.lang.Object

boofcv.alg.filter.binary.ContourTracer

public class ContourTracer
extends java.lang.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 and Description
ContourTracer(ConnectRule rule) Specifies connectivity rule

Method Summary

Modifier and Type	Method and Description
void	setInputs(GrayU8 binary, GrayS32 labeled, FastQueue<Point2D_I32> storagePoints)
void	trace(int label, int initialX, int initialY, boolean external, java.util.List<Point2D_I32> contour)

Methods inherited from class java.lang.Object

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

Constructor Detail

ContourTracer

public ContourTracer(ConnectRule rule)

Specifies connectivity rule

Parameters:

rule - Specifies 4 or 8 as connectivity rule

Method Detail

setInputs

public void setInputs(GrayU8 binary,
                      GrayS32 labeled,
                      FastQueue<Point2D_I32> storagePoints)

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.

storagePoints -

trace

public void trace(int label,
                  int initialX,
                  int initialY,
                  boolean external,
                  java.util.List<Point2D_I32> contour)

Parameters:

label -

initialX -

initialY -

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

contour -