org.bytedeco.depthai

Class AprilTag

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.depthai.AprilTag

All Implemented Interfaces:

AutoCloseable

@Namespace(value="dai")
 @Properties(inherit=depthai.class)
public class AprilTag
extends Pointer

AprilTag structure.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
AprilTag() Default native constructor.
AprilTag(long size) Native array allocator.
AprilTag(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
Point2f	bottomLeft() The detected bottom left coordinates.
AprilTag	bottomLeft(Point2f setter)
Point2f	bottomRight() The detected bottom right coordinates.
AprilTag	bottomRight(Point2f setter)
float	decisionMargin() A measure of the quality of the binary decoding process; the average difference between the intensity of a data bit versus the decision threshold.
AprilTag	decisionMargin(float setter)
AprilTag	getPointer(long i)
int	hamming() How many error bits were corrected? Note: accepting large numbers of corrected errors leads to greatly increased false positive rates.
AprilTag	hamming(int setter)
int	id() The decoded ID of the tag
AprilTag	id(int setter)
AprilTag	position(long position)
Point2f	topLeft() The detected top left coordinates.
AprilTag	topLeft(Point2f setter)
Point2f	topRight() The detected top right coordinates.
AprilTag	topRight(Point2f setter)

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, getDirectBufferAddress, getPointer, getPointer, getPointer, hashCode, interruptDeallocatorThread, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetAddress, offsetof, offsetof, parseBytes, physicalBytes, physicalBytesInaccurate, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, sizeof, toString, totalBytes, totalCount, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AprilTag

public AprilTag()

Default native constructor.

AprilTag

public AprilTag(long size)

Native array allocator. Access with Pointer.position(long).

AprilTag

public AprilTag(Pointer p)

Pointer cast constructor. Invokes Pointer(Pointer).

Method Detail

position

public AprilTag position(long position)

Overrides:

position in class Pointer

getPointer

public AprilTag getPointer(long i)

Overrides:

getPointer in class Pointer

id

public int id()

The decoded ID of the tag

id

public AprilTag id(int setter)

hamming

public int hamming()

How many error bits were corrected? Note: accepting large numbers of corrected errors leads to greatly increased false positive rates. As of this implementation, the detector cannot detect tags with a hamming distance greater than 2.

hamming

public AprilTag hamming(int setter)

decisionMargin

public float decisionMargin()

A measure of the quality of the binary decoding process; the average difference between the intensity of a data bit versus the decision threshold. Higher numbers roughly indicate better decodes. This is a reasonable measure of detection accuracy only for very small tags-- not effective for larger tags (where we could have sampled anywhere within a bit cell and still gotten a good detection.

decisionMargin

public AprilTag decisionMargin(float setter)

topLeft

@ByRef
public Point2f topLeft()

The detected top left coordinates.

topLeft

public AprilTag topLeft(Point2f setter)

topRight

@ByRef
public Point2f topRight()

The detected top right coordinates.

topRight

public AprilTag topRight(Point2f setter)

bottomRight

@ByRef
public Point2f bottomRight()

The detected bottom right coordinates.

bottomRight

public AprilTag bottomRight(Point2f setter)

bottomLeft

@ByRef
public Point2f bottomLeft()

The detected bottom left coordinates.

bottomLeft

public AprilTag bottomLeft(Point2f setter)